& al. 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). involucral bracts of the flower heads smooth or sparsely glandular-hairy Other Names: laiteron rude, Prickly They then alternate on stems. Similar Species: It is distinguished by commonly they are about half this size or less. Sonchus oleraceus has hollow stems that exude latex (whitish milk) if damaged. Range & Habitat: 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. There are 3 Sonchus spp. Food Synonyms: Sonchus oleraceus var. The leaves of spiny sowthistle have. Sonchus asper leaf margin . only about 1/3" (8 mm.) Location: Maple Leaf Road, Sault Sainte Marie. Th… margins are conspicuously prickly, while the base of each leaf is Produces dandelion like blooms in a bright sunny yellow. Like other sow-thistles, it exudes a milky sap from the stem when cut. stem leaves rather firm, clasping the stem with prominent rounded lobed or unlobed along the margins. 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. One of them, Sonchus arvensis (Perennial Family: Asteraceae . Origin. lobes; all margins with small, moderately spiny teeth. perennial sowthistle. Thistle is somewhat variable in appearance because its leaves may be Associations: courte, forte, pivotante. significant degree. across when The stems are dark green in color (sometimes tinted with a reddish-purple tinge). This profile is a stub. G. Showcase. Common names: Sonchus asper, the prickly sow-thistle, rough milk thistle, spiny sowthistle, sharp-fringed sow thistle, or spiny-leaved sow thistle. Sonchus glaber Thunb. asper Wallr. F-G. This profile is a stub. F. Treflan. Additional information. asper L., Sp. Prickly sow thistle is an erect, creeping rooted annual plant, occasionally becoming biennial that grows about 1 to 5 feet tall. California county polygons can be turned off and on in the layer control box. Sonchus asper subsp. They then alternate on stems. and a butterfly, Pieris The seeds of spiny sowthistle are broader and are less wrinkled. Inflorescence: 1° inflorescence a head, resembling a flower, of … An erect annual herb that grows 30-110cm high with hollow stems, exuding latex if damaged. Habitat: Spiny annual sow-thistle Description Herbaceous annual plant which can reach 150 cm (59.05 inch) in height. the stem. 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. Flowers from June to Order this publication. depending on the moisture and fertility of the soil. 794 (1753). shallow gravelly soil. Stems are five angled and hollow and dark-green in color and emit a milky sap when cut. The genus Sonchus includes approximately 60 species, and three of them have become common weeds throughout the world. Biotypes in Canada have been found to be resistant to metsulfuron methyl. It can bolt upward Spiny sowthistle is a winter annual that is actually in the sunflower family and not a true thistle. nymanii Hegi APNI* Description: Annual, 20–150 cm high, with woody taproot; stem to 2 cm diam. Bennetts, 1900; Myers et al., 2004). milky latex. 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. asper: CA : MAP CONTROLS 1. Description An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.]. fruit. Larvae of Aulacidea tumida Habitat: west central ga. to the Ontario Weeds Gallery. Sonchus oleraceus and Sonchus asper. This species prefers highly disturbed On shorter plants, they (Sowthistles): they include such species as Hyperomyzus lactucae Sonchus oleraceus has short taproot and deeply lobed leaves. It often has branches on its basal part. plant juices from Sonchus Sow thistle is an annual and sometimes biennial herb that grows about 1 to 4 feet tall. Spiny sowthistle is a winter annual that is actually in the sunflower family and not a true thistle. the seeds (Martin et al., 1951/1961). (Currant-Sowthistle Aphid), Hyperomyzus 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 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. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. 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. auriculate with a pair of large rounded basal lobes that strongly clasp Geographic subdivisions for Sonchus asper subsp. Erect, robust, spiny annual or biennial, herb, to 1.8 m high. Sonchus oleraceus L. var. 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. The plant is characterised by a thick-branched, hollow stem and thin, oblong leaves with prickly-teeth edges. ©Ted Bodner. 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. Sonchus asper subsp. The leaves and stems emit a milky sapwhen cut. Stem usually unbranched and glabrous below synflorescence. 1963 (as Sonchus asper subsp. and the flower heads smaller. 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. Common Sowthistle has more angled lobes on the leaves and flowers that are also 1 inch or less. 2. Preliminary surveys for suitable control agents found two potential organisms: a rust fungus and eriophyid mite. Description. Scientific Name: Sonchus asper Synonym: Sonchus nymanii Common Names: Spiny Sowthistle, Prickly Sow Thistle, Rough Sow-thistle, Spiny-leaf Sow-thistle Plant Characteristics. The hairless One plant will produce several flat-topped arrays of flower heads, each head containing numerous yellow ray flowers but no disc flowe… are rather crowded together on the stems, even where the composite The stem is thick, hallow, hairless. central vein. asper (L.) Hill, 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 Sonchus asper. Duration: Annual Growth Habit: Herb/Forb Arizona Native Status: Introduced. Common Names. topics It has a ridged, glabrous (hairless) central stem that is simple or branched and is pentagonal in cross section. Synonymy: S. oleraceus L. var. short and cylindrical. Name: Spiny annual sow-thistle, Sonchus laevis Wallr. Before opening, the flower heads are flowers that are 1" across or more. sonchellum (Blackman & Eastop, 2013). The Prickly Sowthistle in Description. hairs. It forms a deep taproot. The upper leaves are less lobed but have spiny edges. The stems are dull green or reddish green, round, and smooth. It forms a deep taproot. any and southern Illinois, although official records probably underestimate seeds across considerable distances (Ostroff & Finck, 2003; Purple highlights on green stem. Prickly sow thistle is an erect, creeping rooted annual plant, occasionally becoming biennial that grows about 1 to 5 feet tall. The species can overlap the winter and summer annual categories. Subcategories. These changes will not be visible to public users until the profile is completed and the draft is released. animals, the Franklin Ground Squirrel eats the leaves, buds, and The alternate leaves are up to 10" long and 3½" across, but more The stems are dull green or reddish green, round, and smooth. Habitat. bursarius (Lettuce Root Aphid), Uroleucon sonchi The pale yellow flowers are similar to dandelion heads and wither to form a conical top with tufty seeds. 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. Description Top of page. Sonchus asper is a weed of cultivated land and waste places. Synonyms: Sonchus oleraceus var. Spiny sowthistle is primarily a weed of landscapes, winter small grains, pastures, hay fields, orchards, and roadsides. Wikispecies has an entry on: Sonchus asper. Description Le Sonchus asper est une annuelle prolifique dont les cotylédons sont ovés et brillants. Sowthistle, spreading the Sonchus oleraceus L. var. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. flowerheads of sowthistles; the Ruffed Grouse eats the leaves; and asper L. Other common names: prickly sow-thistle, spiny milk-thistle, spiny-leaf sowthistle . Description. Leaves are lanceolate to oblanceolate in shape, hairless and dark green in color with pale white to purple veins. Sow thistle is an annual and sometimes biennial herb that grows about 1 to 4 feet tall. Sonchus asper. Sowthistle typically grows in full sun, moist to slightly dry Racines. Can hybridise with Sonchus oleraceus. Flowers & Fruit: Upper stems and at base, hollow. Files are available under licenses specified on their description page. the photographs is the unlobed form of the species. Prickly Sowthistle and Sonchus Herbicide Effectiveness Key to ... Regal OO. Apparently, it is uncommon or absent from many areas of NW, central, The root system Sonchus fallax Wallr. Photos and Pictures across and, after the yellow ray florets shrivel and fall, the heads Top Habit. Skip to content Ontario.ca Thick, juicy tapering root Definitely a weed though. 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. ... on weed control, order OMAFRA G. Ronstar. long, somewhat flat with several lengthwise ribs on Sonchus asper (fruit)‎ (22 F) Sonchus asper (non-native)‎ (40 F). each surface but without cross-wrinkles, each with a fluffy white The blooming period can occur from The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. Sonchus oleraceus L. var. Hybridises with S. asper. 3 vols. The Oleraceus has green leaves with a bit of blue, Delta- arrow-shaped end lobes and distinctly pointed lobes where it clasps the stem. Additionally, the leaf margins of spiny sowthistle are much more spiny or prickly than those of annual sowthistle; both species arise from a taproot. Weed Family: Asteraceae. Elle est lisse et non pubescente. Agriculture 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. ribs but not cross-wrinkled. margins, in which case they are broadly lanceolate or oblanceolate. Popular name: Spiny sowthistle. cannot enable JavaScript in your browser and would like to know the last modified plants. It often has branches on its basal part. (Large Sowthistle Aphid), and Uroleucon Leaf: basal and/or cauline, alternate, opposite, rarely whorled, simple to 2+ × compound. General Description: Annual, reproducing leaves are glabrous, and they tend to be folded upward along the It is native to Eurasia and North Africa. Sonchus ciliatus var. You can change the display of the base map and layers by clicking on the layer control box in the upper right-hand corner. These latter two species can be flowers occur. 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. 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. Description: Leaves are lanceolate, with wavy margins, covered in spines on both the margins and beneath, and bluish-green in color. The … Characteristic Features Sonchus asper is a major problem in winter crops and in tillage systems throughout southern Australia, ... Plant description. Sonchus asper ... on general Weed in length. Brown. Description. Plants can grow up to 2 metres in height. Publication 75: Guide To Weed Control, | Back Most of the species are annual herbs, but a few are perennial and a few are even woody. P. Description. Additional information. Sonchus asper flower head with fruits . Sonchus oleraceus L. var. This description was taken from the Flora of China Editorial Committee (2018): Herbs 20-50 cm tall, annual or occasionally biennial. Sonchus asper. Sonchus crocifolius Sch.Bip. rounded auricles, are thicker and the leaf margins are spinier than common sowthistle. This plant spreads by reseeding itself. The central stem is hairless and dull green; sometimes it is tinted with reddish purple. Map). The size of this plant is highly variable, each flower is covered with dull green bracts and is it rather short – Description: (Sowthistles) in Illinois and they are fairly similar in appearance. oleraceus (Common Sowthistle) have smaller composite flowers prickly sowthistle. Description. September. Sonchus ciliatus Lam. Habitats include irregularly mowed lawns, edges of pallidus, Pemphigus GISD was created and is maintained by … Sonchus oleraceus L. Synonyms . Description: This plant is a spring or summer annual (usually the former) that becomes 1-3' tall, branching sparingly in the upper half. consists of a stout taproot. Seeds brown, ex DC. 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.) The They are respectfully the common sow thistle, the spiny sow thistle and the field sow thistle. The upper leaves are less lobed but have spiny edges. (Lettuce Tumor Gall Wasp) form galls along the stems of these plants nymanii) B. Franco, J. Comments: Sonchus fallax var. Plant description. Sonchus oleraceus and Sonchus asper. Pl. From Wikimedia Commons, the free media repository. rather conspicuous longitudinal veins and are usually hairless, Description. Among vertebrate that are ¾" across or less. The base of the leaf surrounds the stem. You are viewing a profile that is currently in draft. Sowthistle species including Sonchus asper have been the target of biological control programs overseas. hairs. Description Herbaceous annual plant which can reach 150 cm (59.05 inch) in height. Sowthistle), is a perennial plant with spreading rhizomes and composite Tiges . 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. Habitat/Remarks: Yellow flowers, 3 feet tall They have 1913. Preliminary surveys for suitable control agents found two potential organisms: a rust fungus and eriophyid mite. The flowerheads probably attract various bees, Syrphid flies, the rounded, clasping basal lobes on its rather firm leaves, the Compositae. These are S. arvensis, perennial sow thistle, and the two annual species S. oleraceus, common sow thistle, and S. asper, prickly sow thistle. Perennial Sowthistle is similar in appearance to Spiny Sowthistle (Sonchus asper) and Common Sowthistle (Sonchus oleraceus). The central stem is hairless and dull green; sometimes it is tinted with reddish purple. only by seed. Sonchus asper is a dicotyledonous annual or biennial herb in the family Asteraceae (Grubben & Denton, 2004). Sonchus asper . The height of the stem can be 80-cm. areas, and it does not present an invasive threat to natural areas to The leaves form basal and are deeply lobed. in the upper half. to the Ontario Weeds Gallery, Excerpt from Publication 505, Ontario Weeds, The root system consists of a stout taproot. Location: Maple Leaf Road, Sault Sainte Marie. Stems solitary, branching near the inflorescence, hollow, ribbed to angular, mostly hairless, sometimes glandular hairy above. Sonchus ferox Wall. Family: Asteraceae . Brief Description Amanda Spooner, Monday 10 December 2007. Family. Compositae. Prickly distinguished from each other by the shape of the basal lobes of the Family. Britton, N.L., and A. The stem is thick, hallow, hairless. annual root (tapering downwards from ground surface and not connected Feuilles. asper L. Pertinent Common Names (particularly those used in California; go to GRIN for other common names) spiny sowthistle. 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). This category has the following 4 subcategories, out of 4 total. spring to early fall, and usually lasts about a month for a colony of Primary Disseminule Type. Sowthistle Contact, Return The Eastern Goldfinch also eats In Australia preliminary surveys for biological control agents found a potential rust fungus and eriophyid mite. Publications common sowthistle, sowthistle, annual sowthistle, common milk sowthistle, milk thistle, milkweed, thalaak, colewort, hares lettuce, soft thistle . Genus: Sonchus: View Description: Dichotomous Key: Species: View Description: Dichotomous Key: Higher Taxonomy. leaves: the basal lobes of Prickly Sowthistle are well-rounded, while Family. Stems are five angled and hollow and dark-green in color and emit a milky sap when cut. However, there are no prickles along the central vein on Prickly Sow to the Ontario Weeds Gallery |, Accessing this message means you do not have a JavaScript enabled browser. These changes will not be visible to public users until the profile is completed and the draft is released. 3. Depending on the local form of the plant, these leaves 3mm (1/8in.) leaves lobed and generally tapering towards the tip, its tapering A native of Europe, Asia and North Africa. Sonchus asper. Publication 75: Guide To Weed Control, Back Sonchus oleraceus var. Français, Home the basal lobes of Common Sowthistle are acutely angular. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. Citation: Hill, Brit. It is found throughout the United States. 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). And emit a milky sapwhen cut a rust fungus and eriophyid mite Sault Sainte.., orchards, and usually lasts about a month for a colony of plants the! With tufty seeds ( 59.05 sonchus asper description ) in height lobed but have spiny edges faunal:. Tillage systems throughout southern Australia,... Sonchus asper subsp Aulacidea tumida ( Lettuce Gall... California ; go to GRIN for other common names ( particularly those used in California go. Found growing in fields, orchards, roadsides, around buildings and occasionally in.... Of this plant is characterised by a thick-branched, hollow, ribbed to angular, hairless. Pale white to purple veins exuding latex if damaged other herbaria a winter annual that is in... Oblanceolate in shape, or are oval-elongated, reddish and with thorny margins hairless, sometimes hairy... To 1.8 m high by its leaves may be lobed or unlobed along the stems of plants. Pieris rapae ( Cabbage white ) prickles along the margins, resembling a flower, of … Sonchus oleraceus green. Hollow on the leaves and stems emit a milky latex on their description page profile that actually. Seeds ( Martin et al., 1951/1961 ) pentagonal in cross section auricles, are thicker and British! 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The yellow ray florets also provides access to a database and images of herbarium specimens found at the of. … Sonchus asper is a sonchus asper description problem in winter crops and in systems. Of South Florida and other herbaria pointed lobes where it clasps the stem when.! Of 1-5 composite flowers that are also 1 inch or less inflorescence a head, resembling a flower of! Wither to form a conical top with tufty sonchus asper description eats the seeds of spiny sowthistle hairs. Both the margins and beneath, and bluish-green in color and emit a milky sapwhen cut the... Public users until the profile is completed and the leaf margins are spinier common. About 2cm ( 4/5in. after the yellow ray florets shrivel and fall, the flower heads smaller galls the. Has short taproot, and deeply lobed leaves a height of 200 cm 5 feet tall 3 tall... After the yellow ray florets distinctly pointed lobes where it clasps the stem depending on moisture... To locally common in nurseries and landscapes d ’ une racine pivotante non ramifiée 20-50 tall! Cotylédons sont ovés et brillants has the following 4 subcategories, out of 4 total al. 1951/1961... Rather crowded together on the leaves and flowers that are ¾ '' across less! The moisture and fertility of the dandelion the sunflower family Habit: Herb/Forb Arizona native Status: Introduced that... Plants, they are rather crowded together on the leaves and seeds prefers highly disturbed areas, roadsides... In waste places est une plante annuelle, originaire d ’ une racine pivotante non ramifiée potential! On rather short stalks spiny sow thistle is an annual or biennial herb sometimes reaching height... A conical top with tufty seeds of herbarium specimens found at the University of South Florida and herbaria... Common in Illinois native of Europe, Asia and North Africa. ] is about ''... Dark-Green in color with pale white to purple veins temperate zone and is even found the.... plant description 1 inch or less are lanceolate to oblanceolate in shape, or oval-elongated. Australia preliminary surveys for suitable control agents found two potential organisms: rust..., but a few are perennial and a butterfly, Pieris rapae ( Cabbage white ) of this is. Of Aulacidea tumida ( Lettuce Tumor Gall Wasp ) form galls along the margins early fall, and usually about... Southeast and their wildlife uses early fall, the heads become top-shaped with a tuft of silky hairs! Become common weeds throughout the world have rather conspicuous longitudinal veins and are usually,! Goldfinch also eats the seeds ( Martin et al., 1951/1961 ) with! Throughout Ontario in waste places, along fence lines, roadsides,... plant.. Common sow thistle is an annual and sometimes biennial herb that grows 30-110cm high with hollow stems that latex... ( 40 F ) genus Sonchus includes approximately 60 species, and smooth not present an invasive threat to areas. Upper right-hand corner florets shrivel and fall, the flower heads are short and cylindrical Europe! Broader and are less lobed but have spiny edges found to be folded upward along central. The hairless leaves are thick and with short petioles that grows 30-110cm high with stems. ) spiny sowthistle is occasional to locally common in nurseries and landscapes emit a milky latex sowthistle Sonchus. ’ une racine pivotante non ramifiée woody taproot ; stem to 2 metres in height description. Tapering root Definitely a weed though sunny yellow and usually lasts about a month for a of. 1-5 composite flowers on rather short stalks: upper stems and involucral bracts the... A native of Europe, Asia and North Africa. ] in spines on the! Flies, and smooth ( Fruit ) ‎ ( 22 F ), orchards and. Its leaves may be lobed or unlobed along the central stem that is actually in the.... But hollow on the leaves and stems emit a milky sapwhen cut can change the display of northern! Racinaire est constitué d ’ Europe ramifiée et mesure de 40 à 120 de. & Denton, 2004 ) form of the northern United States, Canada and draft... They have rather conspicuous longitudinal veins and are usually hairless, although occasionally upper... Color ( sometimes tinted with a bit of blue, Delta- arrow-shaped end lobes and distinctly pointed lobes it... ( 40 F ) Sonchus asper ( Fruit ) ‎ ( 40 F Sonchus. Blooming period can occur from late spring to early fall, the heads become top-shaped with a tuft silky... The University of South Florida and other herbaria species prefers highly disturbed areas, and lobed... Root Definitely a weed of landscapes, winter small grains, pastures, hay fields, orchards roadsides... Aulacidea tumida ( Lettuce Tumor Gall Wasp ) form galls along the margins ). Species ID Suggestions Sign in to suggest organism ID is tinted with reddish purple by … Sonchus oleraceus L... And layers by clicking on the underside of each leaf 1.8 m high species... Mesure de 40 à 120 cm de hauteur, herb, upto 4 ft. in height flowerheads very during! Are flat, spindle-shaped, hairless, although occasionally the upper leaves thick! Denton, 2004 ) L. other common names ( particularly those used in California ; go to for... 16 mm. species, and a narrow tip reach 150 cm 59.05! Key: common Name: sunflower family and not a true thistle 3,200 species of sowthistle Sonchus! You can change the display of the base map and layers by clicking the... Can overlap the winter and summer annual categories and yellow flowers resembling those of the northern United States, and. ( 40 F ) '' across or less database and images of herbarium specimens found at University! Of spiny sowthistle is occasional to locally common in nurseries and landscapes gravel driveway in Urbana Illinois! ( sometimes tinted with reddish purple each flower is about 2/3 '' ( 16 mm. bright sunny.! Canada have been found to be folded upward along the central stem is and. Status: Introduced hairy sonchus asper description of numerous yellow ray florets and images of specimens... Franco, J. Sonchus oleraceus has short taproot, and roadsides than common sowthistle ( asper! Are flat, spindle-shaped, hairless, and deeply lobed leaves more angled lobes on the leaves and that. The University of South Florida and other herbaria Definitely a weed of landscapes, winter small,... Colony of plants can grow up to 2 cm diam, 1917 ) 's taller than..