Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Reed C. Rollins, except as specified

Annual to subshrub
Leaves generally basal and cauline, alternate, generally simple; stipules 0
Inflorescence: generally raceme
Flower bisexual; sepals 4, free; petals (0)4, free, generally white or yellow, often clawed; stamens generally (2,4)6, generally 4 long, 2 short; ovary 1, superior, chambers generally 2, septum membranous, connecting 2 parietal placentas, style 1, stigma simple or 2-lobed
Fruit: generally capsule ("silique") with 2 deciduous valves, sometimes breaking transversely or indehiscent
Seeds 1–many per chamber
Genera in family: 300+ genera, 3000+ species: worldwide, especially cool regions; some cultivated for food (especially Brassica, Raphanus ) and ornamental
Recent taxonomic note: Recently treated to include Capparaceae [Rodman et al. 1993 Ann Missouri Bot Gard 80:686–699; Rollins 1993 Cruciferae of Continental North America. Stanford Univ Press]
Family description, key to genera by Robert A. Price.



Annual, biennial, perennial herb; hairs simple, rarely sac-like
Stems 1–many, prostrate to erect, branched or not, often from center of basal rosette, rooting at nodes or not
Leaves: basal, lower cauline sessile or short-petioled, entire to pinnately compound; cauline reduced upward
Inflorescence terminal and lateral
Flower generally small; petals 0 or obovate to narrowly spoon-shaped, pale to bright yellow or white
Fruit linear to round, plump; valves 2 or 4(6); pedicel ascending to recurved, slender, generally with 2 minute glands at base; style 0 or prominent, persistent
Seeds 10–200, (1)2 rows per chamber, dense, generally plump; wing 0; embryonic root at edges of both cotyledons
Species in genus: ± 75 species: worldwide
Etymology: (Old Saxon: for these, perhaps other crucifers)
Reference: [Stuckey 1972 Sida 4:277–340]


R. curvipes Greene

Annual, rarely ± short-lived perennial herb, generally ± glabrous
Stem 1–5 dm, branched, often from near base; hairs often below, ± sparse
Leaves: basal ± entire to deeply pinnately lobed, rarely partly ± 1-pinnate, generally petioled; cauline 0 or 4–8 cm, 5–15 mm wide, oblong, obovate, or oblanceolate, clasping stem, entire to ± pinnately lobed
Flower: petals ascending, oblong to ± tongue-shaped, yellow
Fruit straight to upcurved, generally narrowed near middle, smooth, glabrous; pedicel 2–5 mm; style 0.5–1 mm
Seed ± reniform, finely papillate
Ecology: Wet sites
Elevation: < 2300 m.
Bioregional distribution: California Floristic Province, East of Sierra Nevada
Distribution outside California: N.America


var. truncata (Jeps.) Rollins

Plant ± decumbent to erect
Flower: petals 1–1.5 mm, ± = sepals
Fruit 3–6(8) mm, 2–3.5 X longer than wide, oblong; tip ± truncate to widely obtuse; pedicel spreading to ascending
Ecology: Wet streambanks, pond margins, mud flats
Elevation: < 2300 m.
Bioregional distribution: California Floristic Province
Distribution outside California: to Canada, Texas, Mexico

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bioregional map for RORIPPA%20curvipes%20var.%20truncata being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Rorippa curvipes var. truncata
Retrieve dichotomous key for Rorippa
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