Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



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.



Biennial, perennial herb; base woody or not; hairs 0 to dense, simple, forked, stellate, or multibranched; caudex branched or not
Stem branched or not, cylindric, leafy
Leaves: basal petioled, entire or dentate; cauline generally sessile, entire or dentate, base often lobed, often clasping stem
Inflorescence: bracts 0
Flower erect to reflexed; sepals erect; petals spoon-shaped to oblong and narrowed at base or narrowly obovate, white to deep purple, rarely straw-colored
Fruit erect to reflexed, linear, straight to curved, flat parallel to septum, rarely ± cylindric
Seeds ± many, generally 1 row per chamber, flat or plump, winged or not; embryonic root at edges of both cotyledons
Species in genus: ± 120 species: temp North America, Eurasia, Africa
Etymology: (Latin: of Arabia)


A. sparsiflora Torr. & A. Gray

Perennial; caudex branched or not; hairs multibranched to simple, spreading or appressed, coarse
Stems 1–several, simple or branched above, 3–9 dm, generally stout; hairs below, sometimes above
Leaves: basal many, 3–10 cm, linear-oblanceolate to wider, entire or ± dentate, hairy, tip acute; cauline many, sessile, 2–8 cm, linear-lanceolate or wider, base lobed, generally sagittate, clasping stem
Flower: petals 9–12 mm, 2–4 mm wide, spoon-shaped, pink to purple
Fruit ascending to recurved, 6–12 cm, straight or curved, glabrous; pedicel ascending to spreading-recurved, 5–15 mm, often stout, glabrous to hairy
Seed round; wing narrow
Ecology: Rocky slopes, valleys
Elevation: < 2800 m.
Bioregional distribution: Cascade Range, Sierra Nevada Foothills, Southwestern California, Great Basin Floristic Province, n Desert Mountains
Distribution outside California: to British Columbia, Montana, Wyoming, Utah


var. arcuata (Nutt.) Rollins

Stem: hairs ± dense, spreading, branched or not
Leaves: basal linear-oblanceolate, entire or toothed
Fruit: pedicel ascending; hairs ± dense, spreading
Ecology: Shrubland, woodland
Elevation: 700–1900 m.
Bioregional distribution: Cascade Range, Sierra Nevada Foothills, Southwestern California
Synonyms: A. a. A. Gray; including var. rubicundula Jeps

previous taxon | next taxon
bioregional map for ARABIS%20sparsiflora%20var.%20arcuata being generated

Retrieve Jepson Interchange Index to Plant Names entry for Arabis sparsiflora var. arcuata
Retrieve dichotomous key for Arabis
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California