Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
Lepidium fremontii

Higher Taxonomy
Family: Brassicaceae (Cruciferae)View DescriptionDichotomous Key

Common Name: MUSTARD FAMILY
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.
Genus: LepidiumView DescriptionDichotomous Key

Common Name: PEPPERGRASS, PEPPERCRESS
Habit: Annual to perennial herb (shrub); hairs 0 or simple. Leaf: basal rosetted or not, petioled, entire, dentate, to 1--3-pinnately lobed; cauline short-petioled to sessile, base occasionally lobed to clasping. Inflorescence: elongated or congested. Flower: sepals erect or spreading, oblong to ovate, base not sac-like; petals linear to obovate, white or yellow (pink or purple), occasionally reduced or 0; stamens 2, 4, or 6. Fruit: silicle, generally dehiscent, oblong to ovate, obcordate, or round (spectacle-shaped), flat perpendicular to septum (inflated), unsegmented. Seed: 2(4), gelatinous when wet; wing narrow or 0.
Species In Genus: 220 species: all continents except Antarctica. Etymology: (Greek: little scale, from fruit)

Lepidium fremontii S. Watson
NATIVE
Habit: Perennial herb, generally shrubby, glabrous, glaucous. Stem: erect or ascending, several from woody base, 2--5.5(10) dm, many-branched distally. Leaf: mid-cauline (1.5)2.2--8.4(10.2) cm, pinnately 3--7(9)-lobed, or linear and undivided, base tapered, not lobed, lobes (0.7)1--2.8(4.2) mm wide, linear, entire; distal linear, entire. Inflorescence: elongated panicle, rachis glabrous. Flower: sepals 1.5--2.5(3) mm; petals 2.5--4.2 mm, 1.5--2.2 mm wide, spoon-shaped, white; stamens 6. Fruit: (4)4.5--7(8) mm, 4.2--7(8) mm wide, obovate to round, flat, tip winged, notch (0.1)0.2--0.5 mm; valves glabrous, not veined; style 0.2--0.8(1) mm, exserted beyond notch; pedicel spreading, (3.5)4.3--7.6(8.5) mm, cylindric, glabrous. Seed: 1.6--2.1 mm, ovate.
Ecology: Sandy or gravelly soils, washes, barren knolls, bluffs, pinyon/juniper woodland, rocky slopes; Elevation: 450--2100 m. Bioregional Distribution: se SNH, SnGb, SnBr, s SNE, W&I, D; Distribution Outside California: to southern Utah, western Arizona. Flowering Time: Mar--Jun
Synonyms: Lepidium fremontii var. fremontii; Lepidium fremontii var. stipitatum Rollins
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Jepson Online Interchange

Previous taxon: Lepidium flavum
Next taxon: Lepidium heterophyllum

Name Search
botanical illustration including Lepidium fremontii

Contact/Feedback

Citation for this treatment: Ihsan A. Al-Shehbaz 2016. Lepidium fremontii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=30535, accessed on May 05, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 05, 2016.


Lepidium fremontii
click for enlargement
© 2004 James M. Andre
Lepidium fremontii
click for enlargement
© 2015 Steve Matson
Lepidium fremontii
click for enlargement
© 1983 Gary A. Monroe
Lepidium fremontii
click for enlargement
© 2015 Keir Morse
Lepidium fremontii
click for enlargement
© 2015 Keir Morse
Lepidium fremontii
click for enlargement
© 2015 Keir Morse

More photos of Lepidium fremontii in CalPhotos


Geographic subdivisions for Lepidium fremontii:
se SNH, SnGb, SnBr, s SNE, W&I, D;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.