Comments: The cotyledons have a spatula-like shape, or are oval-elongated, reddish and with short petioles. spiny sowthistle. The leaves of spiny sowthistle have. and form flowerheads very quickly during the summer. However, there are no prickles along the central vein on It forms a deep taproot. Description. A native of Europe, Asia and North Africa. conditions, and different kinds of soil, including loam, clay-loam, and Latin Name: Sonchus asper Author: (L.) Hill Family: Asteraceae English Name: Prickly Sow-thistle Irish Name: Bleachtán colgach Welsh Name: Llaethysgallen Arw Plant_number: 1691660010 They then alternate on stems. The species can overlap the winter and summer annual categories. Elle est lisse et non pubescente. Description. The plant is fond … Weed Family: Asteraceae. Sonchus asper flower head with fruits . across and, after the yellow ray florets shrivel and fall, the heads Leaves pinnatifid to pinnatisect, oblanceolate to lanceolate in outline, apex acute, with rounded auricles and pungent spines on margins, basal leaves lacking auricles and sometimes forming a rosette, 4–20 cm long, 2–7 cm wide, reticulate veins prominent. Leaf: basal and/or cauline, alternate, opposite, rarely whorled, simple to 2+ × compound. This description was taken from the Flora of China Editorial Committee (2018): Herbs 20-50 cm tall, annual or occasionally biennial. Description. Sonchus asper: basal auricles of leaves rounded and stalks to flower heads with abundant stipitate glands (vs. S. oleraceus, with basal auricles of leaves +/- triangular and stalks to flower heads without stipitate glands or these few and sparse). to the Ontario Weeds Gallery |, Accessing this message means you do not have a JavaScript enabled browser. subbipinnatifidus Guss. One of them, Sonchus arvensis (Perennial Photographic Location: The three common ones are Sonchus oleraceus, (SON-kus oh-ler-AY-see-us ) Sonchus Asper (SON-kus ASS-pur) and Sonchus arvensis (SON-kus ar-VEN-sis.) Sonchus oleraceus L. var. Sonchus asper. in length. Description. the underside of each leaf. topics 3. become top-shaped with a broad base and a narrow tip. Family. each surface but without cross-wrinkles, each with a fluffy white Habitats include irregularly mowed lawns, edges of Sonchus oleraceus has short taproot and deeply lobed leaves. common sowthistle, sowthistle, annual sowthistle, common milk sowthistle, milk thistle, milkweed, thalaak, colewort, hares lettuce, soft thistle . Family: Asteraceae (Compositae) View Description: Dichotomous Key: Common Name: SUNFLOWER FAMILY Habit: Annual to tree. Hybridises with S. asper. courte, forte, pivotante. Tweet; Description: Probably 6ft high, it's taller than me. only about 1/3" (8 mm.) Larvae of Aulacidea tumida Files are available under licenses specified on their description page. Rural ... on weed control, order OMAFRA NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database. Stems solitary, branching near the inflorescence, hollow, ribbed to angular, mostly hairless, sometimes glandular hairy above. oleraceus (Common Sowthistle) have smaller composite flowers plant juices from Sonchus Popular name: Spiny sowthistle. It has a ridged, glabrous (hairless) central stem that is simple or branched and is pentagonal in cross section. GISD was created and is maintained by … auriculate with a pair of large rounded basal lobes that strongly clasp Food Publication 505: Ontario Weeds Each flower is about 2/3" (16 mm.) asper L. Sonchus spinosus Lam. Apparently, it is uncommon or absent from many areas of NW, central, Scientific Name: Sonchus asper. the stem. Tiges . laevis Wallr. Sonchus australis hort. the photographs is the unlobed form of the species. The real leaves are thick and with thorny margins. ramifiées seulement à l'inflorescence au sommet de la tige. Native Range: Eurasia Invasive range: In every US State and most of Canada Habitat: Common in disturbed sites, also found in pastures, hay fields, dunes, riparian areas, orchards, and wetlands. Snapshot TG. Plant description. Description Top of page. P-F. Rout. This profile is a stub. asper (L.) Hill, Stems are five angled and hollow and dark-green in color and emit a milky sap when cut. The … Thistle is somewhat variable in appearance because its leaves may be It forms a deep taproot. Aster family (Asteraceae). are rather crowded together on the stems, even where the composite Citation: Hill, Brit. Inflorescence: 1° inflorescence a head, resembling a flower, of … Subcategories. 2005. It often has branches on its basal part. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S. KY: Haragan, P.D.. 1991. The leaves form basal and are deeply lobed. Invasiveness Rank: The invasiveness rank is calculated based on a species’ ecological impacts, biological attributes, distribution, and response to control measures. The pale yellow flowers are similar to dandelion heads and wither to form a conical top with tufty seeds. Purple highlights on green stem. Plant description. asper L. Other common names: prickly sow-thistle, spiny milk-thistle, spiny-leaf sowthistle . Plants can grow up to 2 metres in height. Most of the species are annual herbs, but a few are perennial and a few are even woody. It can be distinguished from Sonchus asper and Sonchus hydrophilus in that they both have stiff and leathery leaves, mostly smooth achenes (fruit) with ribs that are scabrous (rough to the touch) or with hairs. It has spread through human activity to most of the temperate zone and is even found in the tropics. Habitat/Remarks: Yellow flowers, 3 feet tall Description. Sonchus asper is a weed of cultivated land and waste places. This naturalized weed is … Similar Species • Spiny sowthistle (Sonchus asper L.) is very similar in appearance to annual sowthistle, however, this species has rounded leaf lobes that clasp the stem, while annual sowthistle has distinctly pointed lobes.Additionally, the leaf margins of spiny sowthistle are much more spiny or prickly than those of annual sowthistle; both species arise from a taproot. Spiny sowthistle is a winter annual that is actually in the sunflower family and not a true thistle. Sonchus oleraceus has hollow stems that exude latex, if damaged. The leaves form basal and are deeply lobed. Seeds brown, Along a gravel driveway in Urbana, Illinois. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. Sonchus decipiens Zenari; Sonchus eryngioides DC. lobes; all margins with small, moderately spiny teeth. You can change the display of the base map and layers by clicking on the layer control box in the upper right-hand corner. annual (usually the former) that becomes 1-3' tall, branching sparingly asper Wallr. Prickly Sowthistle and Sonchus spp. flowers that are 1" across or more. Description Sonchus asper, or Prickly Sowthistle, is a spring or summer annual herbaceous wildflower, with spiney leaves and yellow flowers and is often considered a weed because of its aggressive spread. at base, hollow. perennial sowthistle. pappus; whole plant with sticky white juice. They then alternate on stems. Species ID Suggestions Sign in to suggest organism ID. The plant is characterised by a thick-branched, hollow stem and thin, oblong leaves with prickly-teeth edges. fruit. Sonchus asper . (Large Sowthistle Aphid), and Uroleucon One report says that although it is a weed, it is generally not considered noxious in agriculture and horticulture [ 299 They are distributed by the wind. University of Georgia Press., Athens. The hairless and the flower heads smaller. Name: Spiny annual sow-thistle, Sonchus asper (L.) Hill, Other Names: laiteron rude, Prickly annual sow-thistle, laiteron âpre, laiteron épineux Family: Composite or Aster Family (Compositae) General Description: Annual, reproducing only by seed. You are viewing a profile that is currently in draft. prickly sowthistle. Sonchus asper. This plant spreads by reseeding itself. asper L. Common names: Prickly sow-thistle (English) Frequency: Status: Native: Description: Robust, erect annual or perennial herb, 20-200 cm tall. Sonchus asper is a major problem in winter crops and in tillage systems throughout southern Australia, ... Plant description. mesurent jusqu'à 40 pouces et parfois plus; creuses (fistuleuses), quelque peu pourpres, glauques, glabres, contenant une sève laiteuse très collante. On shorter plants, they It has spread through human activity to most of the temperate zone and is even found in the tropics. nymanii) B. Franco, J. flowers occur. These changes will not be visible to public users until the profile is completed and the draft is released. Sonchus oleraceus L. var. Sonchus asper leaf margin . Its edible leaves make a palatable and nutritious leaf vegetable. These changes will not be visible to public users until the profile is completed and the draft is released. Depending on the local form of the plant, these leaves nymanii Hegi APNI* Description: Annual, 20–150 cm high, with woody taproot; stem to 2 cm diam. annual root (tapering downwards from ground surface and not connected Description: This plant is a spring or summer annual (usually the former) that becomes 1-3' tall, branching sparingly in the upper half. commonly they are about half this size or less. Sonchus asper. Location: Maple Leaf Road, Sault Sainte Marie. sonchellum (Blackman & Eastop, 2013). F-G. Surflan. Sonchus fallax var. Habitat: Spiny annual sow-thistle Synonyms: Sonchus oleraceus var. Agriculture The upper stems terminate in clusters of 1-5 composite Status . The genus Sonchus includes approximately 60 species, and three of them have become common weeds throughout the world. (Currant-Sowthistle Aphid), Hyperomyzus The root system consists of a stout taproot. Sonchus oleraceus L. Synonyms . The Oleraceus has green leaves with a bit of blue, Delta- arrow-shaped end lobes and distinctly pointed lobes where it clasps the stem. Sonchus oleraceushas hollow stems that exude latex, if damaged. Sonchus oleraceus, or Sowthistle, is a genus of annual herbs, considered a winter and summer weed, and includes several species that are common in nurseries and landscapes.Most of the species are annual herbs, but a few are perennial and a few are even woody. The stems are dull green or reddish green, round, and smooth. Phonetic Spelling SON-chus Description. bursarius (Lettuce Root Aphid), Uroleucon sonchi The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. annual taproot, its small flower heads, and its seeds with lengthwise Feuilles. Plant description. Faunal Sonchus oleraceus and Sonchus asper. Bennetts, 1900; Myers et al., 2004). The size of this plant is highly variable, yellow, Oct to Dec or Jan. White to grey sand, ... Sowthistle species including Sonchus asper have been the target of biological control programs overseas. Prickly sow thistle is an erect, creeping rooted annual plant, occasionally becoming biennial that grows about 1 to 5 feet tall. Map). The stem is thick, hallow, hairless. Genus: Sonchus: View Description: Dichotomous Key: Species: View Description: Dichotomous Key: Higher Taxonomy. Order this publication. Characteristic Features Leaves with prickly margins that initially develop as a basal rosette and then occur alternately along the flowering stem, bluish-green color of the leaves, and yellow flowers with a 'puff-ball' seedhead. & al. This species prefers highly disturbed Similar Species: It is distinguished by Perennial Sowthistle is similar in appearance to Spiny Sowthistle (Sonchus asper) and Common Sowthistle (Sonchus oleraceus). Stems solitary, branching near the inflorescence, hollow, ribbed to angular, mostly hairless, sometimes glandular hairy above. asper L. Pertinent Common Names (particularly those used in California; go to GRIN for other common names) spiny sowthistle. milky latex. The central stem is hairless and dull green; sometimes it is tinted with reddish purple. Description Sonchus oleraceus, or Sowthistle, is a genus of annual herbs, considered a winter and summer weed, and includes several species that are common in nurseries and landscapes. Publications Preliminary surveys for suitable control agents found two potential organisms: a rust fungus and eriophyid mite. The blooming period can occur from fruit. Common Sowthistle Sonchus oleraceus Aster family (Asteraceae) Description: This plant is a winter or spring annual that is 1-4' tall, branching very little except near the apex where the flowerheads occur. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. each flower is covered with dull green bracts and is it rather short – The enigma of Sonchus oleraceous vs. S. asper: Perhaps no pair of species has been as confusing for me as distinction between Sonchus oleraceous and S. asper.This confusion has been more so once I started observing specimens in Delhi more closely. Habitat. its distribution (see Distribution (Felt, 1917). They are respectfully the common sow thistle, the spiny sow thistle and the field sow thistle. Publication 75: Guide To Weed Control, | Back lots, barnyards, and waste areas. When fully open they are about 2cm (4/5in.) Stems & Roots: Resembling Perennial The enigma of Sonchus oleraceous vs. S. asper: Perhaps no pair of species has been as confusing for me as distinction between Sonchus oleraceous and S. asper.This confusion has been more so once I started observing specimens in Delhi more closely. depending on the moisture and fertility of the soil. Description: Leaves are lanceolate, with wavy margins, covered in spines on both the margins and beneath, and bluish-green in color. The flowerheads probably attract various bees, Syrphid flies, Sonchus australis hort. Weed Description An annual that may reach as much as 6 feet in height with bluish-green leaves and stems that emit a milky sap when cut. ... on general Weed Common name: Spiny Sowthistle Latin name: Sonchus asper L. Family: Compositae Life Cycle: Annual Type: Broadleaf Description: Winter annual weed that is much more prickly to the touch than Annual sow-thistle (S. oleraceus).Stem leaves have clasping auricles and spiny-toothed leaf margins. Le laiteron rude est une plante annuelle, originaire d’Europe. These are S. arvensis, perennial sow thistle, and the two annual species S. oleraceus, common sow thistle, and S. asper, prickly sow thistle. Sonchus asper is an annual or biennial herb sometimes reaching a height of 200 cm. Geographic subdivisions for Sonchus asper subsp. asper: CA : MAP CONTROLS 1. 3mm (1/8in.) Each floret is replaced by an achene with a tuft of silky white Sonchus oleraceus var. Wikispecies has an entry on: Sonchus asper. Can hybridise with Sonchus oleraceus. James H. Miller and Karl V. Miller. Sonchus fallax Wallr. Sonchus asper subsp. spring to early fall, and usually lasts about a month for a colony of at base, hollow. Spiny sowthistle is a winter annual that is actually in the sunflower family and not a true thistle. asper L., Sp. P. Description. (Sowthistles) in Illinois and they are fairly similar in appearance. , Sonchus asper Common name: Prickly sow-thistle, rough sow-thistle. flowerheads of sowthistles; the Ruffed Grouse eats the leaves; and Leaves are waxy and thorny. One plant will produce several flat-topped arrays of flower heads, each head containing numerous yellow ray flowers but no disc flowe… Fl. ex Trev. Synonymy: S. oleraceus L. var. It can bolt upward Scientific Name: Sonchus asper Synonym: Sonchus nymanii Common Names: Spiny Sowthistle, Prickly Sow Thistle, Rough Sow-thistle, Spiny-leaf Sow-thistle Plant Characteristics. Common names: Sonchus asper, the prickly sow-thistle, rough milk thistle, spiny sowthistle, sharp-fringed sow thistle, or spiny-leaved sow thistle. Britton, N.L., and A. Additional information. margins, in which case they are broadly lanceolate or oblanceolate. and a butterfly, Pieris annual sow-thistle, laiteron âpre, laiteron épineux Sonchus oleraceus L. var. and southern Illinois, although official records probably underestimate nymanii Hegi APNI* Description: Annual, 20–150 cm high, with woody taproot; stem to 2 cm diam. only by seed. Leaves are lanceolate to oblanceolate in shape, hairless and dark green in color with pale white to purple veins. Botanical Description. long, somewhat flat with several lengthwise ribs on Leaves generally glaucescent, often rigidly spinulose along the margins; margins and ribs of achenes ciliolate with minute ... A. Quézel, P. & Santa, S., Nouvelle flore de l'Algérie et des régions désertiques méridionales 2. Asteraceae. Publication 505: Ontario Weeds, OMAFRA 2. plants. Description An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.]. involucral bracts of the flower heads smooth or sparsely glandular-hairy occurs throughout Ontario in waste places, along fence lines, roadsides, Photos and Pictures Family. Description Herbaceous annual plant which can reach 150 cm (59.05 inch) in height. G. Showcase. leaves: the basal lobes of Prickly Sowthistle are well-rounded, while (Lettuce Tumor Gall Wasp) form galls along the stems of these plants Sonchus oleraceus Aster family (Asteraceae) Description: This plant is a winter or spring annual that is 1-4' tall, branching very little except near the apex where the flowerheads occur. Family: Asteraceae . 794 (1753). sow-thistle in general appearance but distinguished from it by its Sonchus asper subsp. Flowers from June to Description. Sonchus arvensis: Prickly The plant is found growing in fields, orchards, roadsides, ... Sonchus asper P.Gaertn. cannot enable JavaScript in your browser and would like to know the last modified Top Habit. Habitat: west central ga. The central stem is hairless and dull green; sometimes it is tinted with reddish purple. Associations: The height of the stem can be 80-cm. These latter two species can be Sonchus asper (L.) Hill. Sonchus asper. Sonchus ciliatus var. Family: Asteraceae . Hybridises with S. asper. Both the stems and the leaves contain a ribs but not cross-wrinkled. They have rather conspicuous longitudinal veins and are usually hairless, although occasionally the upper stems and flowering stalks have a few hairs. Family. Sonchus asper is an annual herb considered native to Europe, Africa and Asia that has been introduced to a wide range of countries around the world, where it frequently becomes an environmental and agricultural weed. The height of the stem can be 80-cm. La tige a un port dressé, est peu ramifiée et mesure de 40 à 120 cm de hauteur. ... Sonchus asper is a weed of cultivated land and waste places. The stem is thick, hallow, hairless. any Spiny sowthistle is primarily a weed of landscapes, winter small grains, pastures, hay fields, orchards, and roadsides. Sow thistle is an annual and sometimes biennial herb that grows about 1 to 4 feet tall. ©Ted Bodner. Spiny sowthistle (Sonchus asper L.) is very similar in appearance to annual sowthistle, however, this species has rounded leaf lobes that clasp the stem, while annual sowthistle has distinctly pointed lobes. Spiny Sowthistle has decidedly larger, spiny teeth on the leaves and larger lobes at the leaf base, and flowers typically less than 1 inch across. The stems are dark green in color (sometimes tinted with a reddish-purple tinge). Publication 75: Guide To Weed Control, Back across when Biotypes in Canada have been found to be resistant to metsulfuron methyl. F. Treflan. pallidus, Pemphigus Sonchus crocifolius Sch.Bip. 1913. Description Le Sonchus asper est une annuelle prolifique dont les cotylédons sont ovés et brillants. animals, the Franklin Ground Squirrel eats the leaves, buds, and date for this page, please contact the webmaster at -internet.webmaster.omafra@ontario.ca, Crop and Pest Updates, Events, What's Hot, Agricultural Information Contact Centre 1-877-424-1300, OMAFRA Racines. The leaves are bluish-green, simple, lanceolate, with wavy and sometimes lobed margins, covered in spines on both the margins and beneath. Other Names: laiteron rude, Prickly This profile is a stub. The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. It has a short taproot, and deeply lobed leaves. It is native to Eurasia and North Africa. Description Herbaceous annual plant which can reach 150 cm (59.05 inch) in height. Stems are five angled and hollow and dark-green in color and emit a milky sap when cut. to a strong horizontal root that has other buds), lower and middle the basal lobes of Common Sowthistle are acutely angular. Resistance to herbicides such as chlorsulfuron and atrazine has led to Sowthistles, including Sonchus oleraceus, being the target of biological control programs overseas and in Australia. Sonchus asper is a major problem in winter crops and in tillage systems throughout southern Australia, South-East Queensland and Northern New South Wales. Description: The seeds of spiny sowthistle are broader and are less wrinkled. News Popular name: Spiny sowthistle. Prickly Sonchus oleraceus is an annual herb, upto 4 ft. in height. The alternate leaves are up to 10" long and 3½" across, but more to the Ontario Weeds Gallery. Preliminary surveys for suitable control agents found two potential organisms: a rust fungus and eriophyid mite. Habitat/Remarks: Yellow flowers, 3 feet tall seeds across considerable distances (Ostroff & Finck, 2003; significant degree. This ex DC. F-G. Sonchus fallax var. Name: Spiny annual sow-thistle, Sonchus Primary Disseminule Type. Sonchus ciliatus Lam. Characteristic Features California county polygons can be turned off and on in the layer control box. asper L. Other common names: prickly sow-thistle, spiny milk-thistle, spiny-leaf sowthistle . Description (diagnostics are in brown) Fruit a cypsela, elliptic to oblanceolate, … Stem usually unbranched and glabrous below synflorescence. The plant is characterised by a thick-branched, hollow stem and thin, oblong leaves with prickly-teeth edges. Prickly sow thistle is an erect, creeping rooted annual plant, occasionally becoming biennial that grows about 1 to 5 feet tall. Sonchus oleraceus L. var. consists of a stout taproot. From Wikimedia Commons, the free media repository. with spiny leaves and yellow flowers resembling those of the dandelion. Th… The root system Among vertebrate The Prickly Sowthistle in around buildings and occasionally in gardens. Thick, juicy tapering root Definitely a weed though. 3 vols. Resistance to herbicides such as chlorsulfuron and atrazine has led to Sowthistles, including Sonchus oleraceus, being the target of biological control programs overseas and in Australia. The stems are dull green or reddish green, round, and smooth. Duration: Annual Growth Habit: Herb/Forb Arizona Native Status: Introduced. Herb. Family: Composite or Aster Family (Compositae) Invasiveness Rank: The invasiveness rank is calculated based on a species’ ecological impacts, biological attributes, distribution, and response to control measures. Forest plants of the southeast and their wildlife uses. Erect, robust, spiny annual or biennial, herb, to 1.8 m high. Botanical Description. may be pinnatifid, or they may lack significant lobes along the Research The achenes are flat, spindle-shaped, hairless, and have several Sonchus oleraceus and Sonchus asper. leaves are glabrous, and they tend to be folded upward along the areas, and it does not present an invasive threat to natural areas to hairs. distinguished from each other by the shape of the basal lobes of the The leaves and stems emit a milky sapwhen cut. rounded auricles, are thicker and the leaf margins are spinier than common sowthistle. About The upper leaves are less lobed but have spiny edges. It often has branches on its basal part. hairs. Like other sow-thistles, it exudes a milky sap from the stem when cut. Annual, native to Britain, Ireland, Europe, Asia and North Africa. asper L. Pertinent Common Names (particularly those used in California; go to GRIN for other common names) spiny sowthistle. Sowthistle species including Sonchus asper have been the target of biological control programs overseas. shallow gravelly soil. Sonchus glaber Thunb. Français, Home Origin. Sonchus oleraceus is an annual herb, upto 4 ft. in height.The stems are dark green in color (sometimes tinted with a reddish-purple tinge). This category has the following 4 subcategories, out of 4 total. The non-native Prickly Sowthistle is occasional to locally common in ... on weed identification, order OMAFRA The base of You are viewing a profile that is currently in draft. Produces dandelion like blooms in a bright sunny yellow. The base of the leaf surrounds the stem. Sonchus oleraceus has hollow stems that exude latex (whitish milk) if damaged. Sonchus asper: basal auricles of leaves rounded and stalks to flower heads with abundant stipitate glands (vs. S. oleraceus, with basal auricles of leaves +/- triangular and stalks to flower heads without stipitate glands or these few and sparse). Sowthistle although occasionally the upper stems and flowering stalks have a few This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. leaves lobed and generally tapering towards the tip, its tapering Sonchus asper. late Range & Habitat: Several aphids suck margins are conspicuously prickly, while the base of each leaf is Illinois. Prickly Sow Common Sowthistle has more angled lobes on the leaves and flowers that are also 1 inch or less. Sow thistle is an annual and sometimes biennial herb that grows about 1 to 4 feet tall. The Eastern Goldfinch also eats Herbicide Effectiveness Key to ... Regal OO. Brown. White-tailed Deer eat the foliage and mature flowerheads of Prickly The species can overlap the winter and summer annual categories. Sowthistle typically grows in full sun, moist to slightly dry Sonchus asper (L.) Hill. Sonchus asper (fruit)‎ (22 F) Sonchus asper (non-native)‎ (40 F). The pale yellow flowers are similar to dandelion heads and wither to form a conical top with tufty seeds. central vein. Cultivation: An illustrated flora of the northern United States, Canada and the British Possessions. Primary Disseminule Type. the seeds (Martin et al., 1951/1961). flowers on rather short stalks. to the Ontario Weeds Gallery, Excerpt from Publication 505, Ontario Weeds, Skip to content Ontario.ca The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. Additional information. longitudinal ribs. Plant Name. The upper leaves are less lobed but have spiny edges. rather conspicuous longitudinal veins and are usually hairless, Sonchus asper is a dicotyledonous annual or biennial herb in the family Asteraceae (Grubben & Denton, 2004). the rounded, clasping basal lobes on its rather firm leaves, the Sonchus asper inflorescence . Files are available under licenses specified on their description page. Before opening, the flower heads are Flowers & Fruit: Upper stems and lobed or unlobed along the margins. Sowthistle), is a perennial plant with spreading rhizomes and composite Le système racinaire est constitué d’une racine pivotante non ramifiée. Pl. (Sowthistles): they include such species as Hyperomyzus lactucae Sonchus asper description and ecology from GISD (ISSG) A species description and information about the ecology of Sonchus asper as an invasive species is provided from the Global Invasive Species Database (GISD). The 1:47 (1769). that are ¾" across or less. plant is a spring or summer 1963 (as Sonchus asper subsp. General Description: Annual, reproducing Brief Description Amanda Spooner, Monday 10 December 2007. September. Compositae. Contact, Return Sonchus ferox Wall. stem leaves rather firm, clasping the stem with prominent rounded G. Ronstar. They have Stems are two fingers thick but hollow on the inside. In Australia preliminary surveys for biological control agents found a potential rust fungus and eriophyid mite. Compositae. Location: Maple Leaf Road, Sault Sainte Marie. in the upper half. An erect annual herb that grows 30-110cm high with hollow stems, exuding latex if damaged. Sonchus asper vol. It is found throughout the United States. asper L. Common names: Prickly sow-thistle (English) Frequency: Status: Native: Description: Robust, erect annual or perennial herb, 20-200 cm tall. Several species of sowthistle (Asteraceae) are common in nurseries and landscapes. short and cylindrical. Sonchus asper Synonyms: Sonchus oleraceus var. If you rapae (Cabbage White). Sonchus asper), but can be distinguished by its leaves and seeds. In Canada have been found to be folded upward along the margins and beneath, and bluish-green in color emit. Late spring to early fall, the flower heads smaller form galls along the margins a and... And in tillage systems throughout southern Australia,... Sonchus asper ( )., around buildings and occasionally in gardens any significant degree zone and is pentagonal in cross section bees Syrphid. Where the composite flowers that are ¾ '' across or less by leaves... Organisms: a rust fungus and eriophyid mite about a month for a colony of plants: family! Make a palatable and nutritious leaf vegetable conspicuous longitudinal veins and are usually,. Produces dandelion like blooms in a bright sunny yellow: along a gravel driveway in Urbana Illinois... Is similar in appearance because its leaves may be lobed or unlobed along the margins and,... 59.05 inch ) in height and eriophyid mite thick-branched sonchus asper description hollow stem and thin, oblong leaves with prickly-teeth.... With prickly-teeth edges, 1917 ) tuft of silky white hairs occurs throughout in. Around buildings and occasionally in gardens areas to any significant degree and waste places in Urbana, Illinois achenes... Stems and the field sow thistle and the leaf margins are spinier than sowthistle... Sommet de la tige a un port dressé, est peu ramifiée et mesure de 40 120! Specimens found at the University of South Florida and other herbaria form of the temperate zone and maintained... Specified on their description page you can change the display of the dandelion those the! Description page Status: Introduced Tumor Gall Wasp ) form galls along the central stem is hairless and dull ;. For the distribution of plants within the state and taxonomic information 30-110cm high hollow... Common sowthistle, robust, spiny milk-thistle, spiny-leaf sowthistle auricles, are thicker and the leaf margins are than... Canada have been found to be folded upward along the stems are dark green in color pale! The non-native prickly sowthistle Sonchus asper Aster family ( Asteraceae ) are common in Illinois and they tend to folded... Are viewing a profile that is actually in the photographs is the unlobed form of the zone... Annual herb, to 1.8 m high currently in draft smaller composite flowers.. Is about 2/3 '' ( 16 mm. waste places, along fence lines,,... Metsulfuron methyl and waste places plants, they are fairly similar in appearance because its leaves sonchus asper description flowers that also! To dandelion heads and wither to form a conical top with tufty seeds leaves are lobed. And, after the yellow ray florets shrivel and fall, the flower heads are and. It does not present an invasive threat to natural areas to any significant.. With detailed information on over 3,200 species of sowthistle ( Asteraceae ) are common in Illinois, Monday December... Lasts about a month for a colony of plants to any significant degree to spiny sowthistle is occasional locally..., with woody taproot ; stem to 2 cm diam approximately 60 species, and have several longitudinal.. Prickly-Teeth edges produces dandelion like blooms in a bright sunny yellow 2cm ( 4/5in. a sonchus asper description! Resembling a flower, of … Sonchus oleraceus is an erect, robust, spiny annual sow-thistle occurs Ontario... They are about 2cm ( 4/5in. of landscapes, winter small grains pastures. Is even found in the tropics rather crowded together on the stems are dull ;... Les cotylédons sont ovés et brillants images sonchus asper description herbarium specimens found at the University of Florida! Rust fungus and eriophyid mite, Sault Sainte Marie perennial sowthistle is similar in appearance galls along central. Sowthistle ( Asteraceae ) reaching a height of 200 sonchus asper description flowers occur sometimes hairy! Nymanii ) B. Franco, J. Sonchus oleraceus has short taproot and deeply lobed leaves where clasps! Is simple or branched and is maintained by … Sonchus asper ( non-native ) ‎ ( 40 F Sonchus. 2004 ) that is actually in the tropics opposite, rarely whorled, simple 2+... Family ( Asteraceae ) are common in nurseries and landscapes ) ‎ ( 40 F ) Sonchus asper Name... Cotyledons have a few hairs the plant is highly variable, depending on the inside asper have been target. Names: prickly sow-thistle, rough sow-thistle of Aulacidea tumida ( Lettuce Tumor Gall Wasp ) form galls the! United States, Canada and the leaf margins are spinier than common sowthistle ( Sonchus oleraceus L. var the.! Upper right-hand corner auricles, are thicker and the leaves and seeds an illustrated Flora of China Editorial Committee 2018!: View description: annual, 20–150 cm high, with woody taproot ; stem to metres. Flat, spindle-shaped, hairless, and smooth al., 1951/1961 ) Key: species: View description: Key! Disturbed areas, and smooth and fertility of the soil Grubben & Denton, 2004 ) spiny! Sonchus includes approximately 60 species, and smooth draft is released solitary, branching near the inflorescence, hollow ribbed! Rarely whorled, simple to 2+ × compound is highly variable, depending on the layer control box the... Goldfinch also eats the seeds of spiny sowthistle are broader and are usually hairless, glandular! Distinguished by its leaves and flowers that are also 1 inch or less, and... Human activity to most of the species Fruit ) ‎ ( 22 F ) or occasionally biennial waste places to. Status: Introduced a gravel driveway in Urbana, Illinois herb that grows about to! An entry on: Sonchus: View description: annual to tree ): 20-50... Species: View description: annual to tree feet tall Sonchus oleraceushas hollow stems that exude (. A spatula-like shape, hairless and dark green in color with pale to. Constitué d ’ Europe and waste places ramifiées seulement à l'inflorescence au sommet la! Une racine pivotante non ramifiée a true thistle species prefers highly disturbed areas, and smooth ) View:., are thicker and the leaves and yellow flowers are similar to dandelion heads and wither to form conical... Sow-Thistle occurs throughout Ontario in waste places attract various bees, Syrphid flies, and three of have! Winter small grains, pastures, hay fields, orchards, roadsides,... plant description annuelle dont. Subcategories, out of 4 total et al., 1951/1961 ) to Britain, Ireland, Europe Asia! Stems of these plants ( Felt, 1917 ) and North Africa. ] le laiteron rude est plante... Provides a source of information for the distribution of plants within the state and taxonomic information annual plant, becoming!: sunflower family and not a true thistle flowers on rather short.. Aster family ( Asteraceae ) are common in Illinois 2018 ): herbs 20-50 cm tall, annual biennial! And fall, the heads sonchus asper description top-shaped with a broad base and a few even... Lobed leaves glabrous, and three of them have become common weeds the! Butterfly, Pieris rapae ( Cabbage white ) have been the target of biological control overseas... Available under licenses specified on their description page, along fence lines, roadsides...... Asper ), but can be turned off and on in the photographs is the unlobed of! Sparsely glandular-hairy and the flower heads are short and cylindrical description Amanda Spooner, Monday 10 December 2007 county... Highly disturbed areas, and they are rather crowded together on the leaves and yellow flowers, 3 feet.! Arizona native Status: Introduced dark green in color ( sometimes tinted with reddish.! Go to GRIN for other common names ) spiny sowthistle is primarily a weed of cultivated land and waste.. The plant is characterised by a thick-branched, hollow, ribbed to angular mostly. Taken from the stem a winter annual that is simple or branched and is even found the. Are common in Illinois white to purple veins thick but hollow on the control. To angular, mostly hairless, sometimes glandular hairy above and other herbaria a... Delta- arrow-shaped end lobes and distinctly pointed lobes where it clasps the stem: Herb/Forb Arizona native Status Introduced. A weed though from late spring to early fall, the spiny sow thistle is an erect creeping! Erect, creeping rooted annual plant, occasionally becoming biennial that grows about 1 to 4 feet tall, to... Name: sunflower family and not a true thistle, around buildings and occasionally in gardens margins and,... The sonchus asper description and occasionally in gardens species prefers highly disturbed areas, they... A broad base and a few hairs ( Martin et al., ). ; stem to 2 metres in height flowers & Fruit: upper stems and draft... However, there are no prickles along the margins be folded upward along the central vein ( 22 )! Out of 4 total taproot ; stem to 2 cm diam includes approximately 60 species, and three them. Common in nurseries and landscapes, to 1.8 m high control box in the tropics ) form galls along central... Whorled, simple to 2+ × compound Florida plants provides a source of information for distribution..., Sault Sainte Marie overlap the winter and summer annual categories L... Emit a milky latex simple or branched and is even found in the upper right-hand corner tapering Definitely... ) B. Franco, J. Sonchus oleraceus and Sonchus asper have been found to be folded upward the! Like blooms in a bright sunny yellow fall, the spiny sow thistle is an erect herb... A month for a colony of plants spiny edges, creeping rooted annual plant which reach... With spiny leaves and seeds and emit a milky sapwhen cut go to GRIN for other names. And North Africa. ] Herb/Forb Arizona native Status: Introduced are spinier than sowthistle... Website also provides access to a database and images of herbarium specimens found at University...

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