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Vascular Plants of California
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Rorippa curvipes


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: RorippaView DescriptionDichotomous Key


Common Name: YELLOW CRESS
Habit: Annual to perennial herb, occasionally with caudex or rhizome; hairs simple or 0. Stem: prostrate to erect, branched or not, leafy. Leaf: basal rosetted or not, simple, entire or dentate to 1--3-pinnately divided; cauline petioled or sessile, generally lobed to sagittate at base, entire to dentate or pinnately lobed. Inflorescence: elongated or congested; bracts 0 [rarely throughout]. Flower: sepals erect to spreading, base not sac-like, generally deciduous (persistent); petals present (vestigial or 0), yellow [white or pink], generally not clawed. Fruit: silique, linear or narrowly oblong, or silicle, spheric to ovoid or broadly oblong; dehiscent, unsegmented; stigma entire or +- 2-lobed. Seed: 10--300, 1(2) row(s) per chamber, generally wingless.
Species In Genus: 85 species: worldwide, on all continents except Antarctica. Etymology: (Latinized Old Saxon: for these or perhaps other crucifers) Note: Other taxa in TJM (1993) moved to Nasturtium.
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Reference: Al-Shehbaz & Price 1998 Novon 8:124--126
Unabridged Reference: Stuckey 1972 Sida 4:277--340
Rorippa curvipes Greene
NATIVE
Habit: Annual (+- short-lived perennial herb), glabrous or hairy. Stem: erect or ascending to decumbent or prostrate, generally few to several from base, 1--4.2(5) dm, proximally stiff-hairy. Leaf: not rosetted, early-deciduous; proximal, mid-cauline short-petioled to sessile, (2)3.5--10(12) cm, oblong or oblanceolate to obovate, base lobed to clasping, pinnately lobed to dentate or entire distally on stem. Inflorescence: elongated. Flower: sepals erect, 0.8--1.8 mm, oblong; petals erect, 0.5--1.8 mm, 0.2--1 mm wide, oblanceolate to spoon-shaped. Fruit: silicle or silique, 2--8(8.8) mm, (0.5)1--2.5 mm wide, ovoid to pear-shaped, curved; valves glabrous; style 0.3--1 mm; pedicel spreading, (1.2)1.7--5(8) mm, slender. Seed: (20)30--80, 0.5--0.7 mm, +- reniform. Chromosomes: 2n=16.
Ecology: Muddy shores, streambanks, meadows, seepage areas; Elevation: 100--3500 m. Bioregional Distribution: CA-FP, SNE; Distribution Outside California: North America. Flowering Time: May--Sep
Synonyms: Rorippa curvipes var. curvipes; Rorippa curvipes var. truncata (Jeps.) Rollins
Jepson eFlora Author: Ihsan A. Al-Shehbaz
Reference: Al-Shehbaz & Price 1998 Novon 8:124--126
Unabridged Reference: Stuckey 1972 Sida 4:277--340
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Botanical illustration including Rorippa curvipes

botanical illustration including Rorippa curvipes

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Citation for this treatment: Ihsan A. Al-Shehbaz 2012, Rorippa curvipes, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=41579, accessed on August 24, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on August 24, 2019.

Rorippa curvipes
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© 2008 Aaron Schusteff
Rorippa curvipes
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© 2013 Gary A. Monroe
Rorippa curvipes
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© 2001 Gary A. Monroe
Rorippa curvipes
click for enlargement
© 2013 Gary A. Monroe
Rorippa curvipes
click for enlargement
© 2008 Aaron Schusteff
Rorippa curvipes
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© 2015 Steve Matson

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Geographic subdivisions for Rorippa curvipes:
CA-FP, SNE
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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.