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|Jepson eFlora: Taxon page
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus: Lapsana||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Lapsana communis L.
Habit: Annual, biennial, glabrous to +- soft-hairy; sap milky. Stem: generally 1 from base, erect, 2--15 dm. Leaf: generally cauline, alternate, 2--20 cm, petioled or distal +- sessile, ovate, entire to toothed, often few-lobed proximally on petiole. Inflorescence: panicle-like; heads liguliflorous, erect; peduncles slender, ascending, subtended by scale-like bracts; involucre ovoid to +- cylindric, glabrous; phyllaries in 2 series, outer few, 0.5--1 mm, inner 8--10, equal, 3--9 mm, linear-oblong, distally keeled, erect in fruit; receptacle flat, epaleate, smooth. Flower: 6--15; ligules 4--10 mm, exceeding involucre, yellow, readily withering. Fruit: 3--5 mm, curved, fusiform, +- compressed, +- 20-veined, pale brown, glabrous; pappus 0. Chromosomes: 2n=12,14,16.
Ecology: Shady places, disturbed areas; Elevation: < 1600 m. Bioregional Distribution: NW, SN, GV, CCo, SnFrB, SW; Distribution Outside California: widely adventive in North America; native to Europe. Flowering Time: Jun--Sep
eFlora Treatment Author: Kenton L. Chambers
Jepson Online Interchange
Previous taxon: Lapsana
Next taxon: Lasiospermum
Citation for this treatment: Kenton L. Chambers 2017. Lapsana communis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=3721, accessed on February 20, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 20, 2017.