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Lepidium coronopus

Higher Taxonomy
Family: Brassicaceae (Cruciferae)View DescriptionDichotomous Key

Habit: Annual to shrub; sap pungent, watery. Leaf: generally simple, alternate; generally both basal, cauline; stipules 0. Inflorescence: generally raceme, generally not bracted. Flower: bisexual, generally radial; sepals 4, generally free; petals (0)4, forming a cross, generally white or yellow to purple; stamens generally 6 (2 or 4), 4 long, 2 short (3 pairs of unequal length); ovary 1, superior, generally 2-chambered with septum connecting 2 parietal placentas; style 1, stigma entire or 2-lobed. Fruit: capsule, generally 2-valved, "silique" (length >= 3 × width) or "silicle" (length < 3 × width), dehiscent by 2 valves or indehiscent, cylindric or flat parallel or perpendicular to septum, segmented or not. Seed: 1--many, in 1 or 2 rows per chamber, winged or wingless; embryo strongly curved.
Genera In Family: +- 330 genera, 3780 species: worldwide, especially temperate. Note: Highest diversity in Mediterranean area, mountains of southwestern Asia, adjacent central Asia, western North America; some Brassica species are oil or vegetable crops; Arabidopsis thaliana used in experimental molecular biology; many species are ornamentals, weeds. Aurinia saxatilis (L.) Desvaux in cultivation only. Aubrieta occasional waif in central NCoR, Carrichtera annua (L.) DC. in SCo, Iberis sempervirens L., Iberis umbellata L. in PR, Teesdalia coronopifolia (Bergeret) Thell., Teesdalia nudicaulis (L.) W.T. Aiton in southern NCoRO, CCo. Cardaria, Coronopus moved to Lepidium; Caulostramina to Hesperidanthus; Guillenia to Caulanthus; Heterodraba to Athysanus; California taxa of Lesquerella to Physaria; Malcolmia africana to Strigosella.
eFlora Treatment Author: Ihsan A. Al-Shehbaz, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Lepidium coronopus (L.) Al-Shehbaz
Habit: Annual, glabrous or puberulent. Stem: prostrate to decumbent, generally several from base, (0.3)0.6--2.5(3.5) dm, branched distally. Leaf: basal rosetted, (3)4--10(15) cm, 1--2-pinnately divided, lobes entire or dentate; mid-cauline petioled, pinnately divided, base cuneate, lobes entire or dentate. Inflorescence: leaf-opposed, not elongated, rachis glabrous. Flower: sepals 1--1.5 mm, persistent; petals, white, obovate, 1--2 mm, 0.4--0.6 mm wide; stamens 6. Fruit: indehiscent, reniform to ovate-cordate, flattened, 2.3--3.4 mm, 3--4.4 mm wide, wingless, notch 0; valve walls thick, distinctly ridged, glabrous, prominently veined; style 0.2--0.7 mm; pedicel (0.7)1--2(2.4) mm, stout, cylindric, ascending, glabrous. Seed: 1.2--1.6 mm, oblong. Chromosomes: 2n=32.
Ecology: Disturbed areas, fields, pastures; Elevation: < 300 m. Bioregional Distribution: ScV, SnFrB, DSon; Distribution Outside California: eastern Canada, central and eastern United States; native to southern Europe, southwestern Asia, northern Africa. Flowering Time: Mar--Jun
Synonyms: Coronopus squamatus (Forssk.) Asch.; Lepidium squamatum Forssk.
Jepson eFlora Author: Ihsan A. Al-Shehbaz
Reference: Al-Shehbaz et al. 2002 Novon 12:5--11
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Noxious Weed listed on the CDFA Weed Pest Ratings table
View the CDFA Pest Rating page for Lepidium coronopus
Weed listed by Cal-IPC

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Next taxon: Lepidium densiflorum

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Botanical illustration including Lepidium coronopus

botanical illustration including Lepidium coronopus

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Citation for this treatment: Ihsan A. Al-Shehbaz 2012, Lepidium coronopus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 04, 2023.

Citation for the whole project: Jepson Flora Project (eds.) 2023, Jepson eFlora,, accessed on October 04, 2023.

Lepidium coronopus
click for enlargement
© 2012 Neal Kramer
Lepidium coronopus
click for enlargement
© 2012 Neal Kramer
Lepidium coronopus
click for enlargement
© 2012 Neal Kramer

More photos of Lepidium coronopus in CalPhotos

Geographic subdivisions for Lepidium coronopus:
ScV, SnFrB, DSon
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).


Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).