- This introduced species can be found scattered in Missouri and the plant is becoming much more common.
Many members of the genus
can be hard to distinguish in the field.
can be identified by its many basal leaves, glabrous stems, and basal leaf petioles - which have hirsute hairs at the base. The basal leaves of this species dry and wilt as the plant matures so it is best identified while young.
can flower when quite small. The picture below shows a tiny plant typical of how the species looks in an area that gets mowed or has poor soil.
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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. Click on an acronym to view each weed list, or click here for a composite list of
Weeds of the U.S.
Linnaeus, Sp. Pl. 2: 655. 1753.
sparsely hirsute basally (at least on petiole of basal leaves), often glabrous distally.
erect, ascending, or decumbent, unbranched or branched basally and/or distally, (0.3-)1-3.5 (-4.5) dm, (not flexuous).
(persistent to anthesis), rosulate, (5-)8-15(-22)-foliolate, (2-)3.5-15(-17) cm, leaflets petiolulate; petiole 0.5-5 cm, (ciliate); lateral leaflet blade oblong, ovate, obovate, or orbicular, smaller than terminal, margins entire, repand, crenate, or 3-lobed; terminal leaflet (petiolule 0.2-1 cm), blade reniform or orbicular, 0.4-2 cm × 6-30 mm, margins entire, repand, dentate, or 3 or 5-lobed.
1-4(-6), compound as basal, petiolate, [(0.5-)1.2-5.5 (-7) cm, including petiole], leaflets petiolulate; blade base not auriculate; leaflets similar to basal.
erect to ascending, (2-) 3-10(-14) mm.
sepals oblong, 1.5-2.5 × 0.3-0.7 mm, lateral pair not saccate; petals (sometimes absent) white, spatulate, 2.5-4.5(-5) × 0.5-1.1 mm; (stamens usually 4, lateral pair often absent, rarely 5 or 6); filaments 1.8-3 mm; anthers ovate, 0.3-0.5 mm.
linear, (torulose), (0.9-)1.5-2.5(-2.8) cm × (0.8-)1-1.4 mm, (often appressed to rachis); ovules 14-40 per ovary; style 0.1-0.6(-1) mm.
light brown, oblong or subquadrate, 0.9-1.3(-1.5) × 0.6-0.9 (-1.1) mm, (narrowly margined).
Flowering Feb-Jul. Roadsides, clearings, disturbed sites, slopes, cedar glades, mixed woods, meadows, fields, waste grounds, damp places, grassy areas; 0-700 m; introduced; B.C., Ont.; Ala., Ark., Calif., Conn., Del., D.C., Fla., Ga., Ill., Ky., La., Md., Mass., Mich., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Oreg., Pa., S.C., Tenn., Tex., Utah, Va., Wash., W.Va.; w Eurasia; introduced also in Central America, South America, e Asia (Japan), South Africa, Australia.
Herbarium specimens of
have been misidentified as
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