Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.



Annual to tree
Leaves generally compound, alternate, stipuled; leaflets generally entire
Inflorescence: generally raceme, spike, umbel or head; flowers sometime 1–2 in axils
Flowers generally bisexual, generally bilateral; hypanthium generally flat or cup-like; sepals generally 5, fused; petals generally 5, free, or the 2 lower ± fused; stamens 1–many, often 10 with 9 filaments at least partly fused, 1 (uppermost) free; pistil 1, ovary superior, generally 1-chambered, ovules 1–many, style, stigma 1
Fruit: legume, sometimes including a stalk-like base above receptacle, dehiscent, or indehiscent and breaking into 1-seeded segments, or indehiscent, 1-seeded, and achene-like
Seeds 1–several, often ± reniform, generally hard, smooth
Genera in family: ± 650 genera, 18,000 species: worldwide; with grasses, requisite in agriculture and most natural ecosystems. Many cultivated, most importantly Arachis , peanut; Glycine , soybean; Phaseolus , beans; Medicago ; Trifolium ; and many orns
Reference: [Polhill & Raven (eds) 1981 Advances in legume systematics; Allen & Allen 1981 Leguminosae]
Family description and key to genera by Duane Isely.



James W. Grimes

Perennial, unarmed, gland-dotted (especially leaves), hairy or not, caudexed, rhizomed, or stoloned; roots deep, woody, extensive
Stem ± decumbent at base or erect
Leaves odd-1-pinnate, cauline; stipules reflexed, deciduous; leaflets 3
Inflorescence: raceme, generally axillary, with 1 deciduous bract and 2–3 flowers per node
Flower pedicelled; calyx base swollen on top, tube enlarging in fruit; corolla yellowish white to yellow; 9 filaments fused, 1 less so or free; ovary ± hairy, ovule 1, style tip bent, stigma head-like
Fruit indehiscent, elliptic to depressed-obovate in outline, beaked or not
Seed reniform, smooth
Species in genus: 3 species: w North America, especially CA
Etymology: (Rupert C. Barneby, botanist, 1911–2000)
Reference: [Grimes 1990 Mem New York Bot Gard 61:1–114]


R. rigida (Parish) J.W. Grimes


Plant hairy; caudex woody
Stem erect, < 0.75 m; base purple
Leaf: stipule 4–10 mm, linear-lanceolate or triangular; petiole 40–60 mm; leaflet 35–65 mm, lanceolate, with glands and hairs on both surfaces, much denser on upper
Inflorescence: bract 3–7 mm, deciduous; 1.5–2 mm
Flower: calyx 9–10 mm; banner 14–15 mm
Fruit 9–13 mm, elliptic, golden-brown, smooth to faintly net-sculptured, with glands and red-brown hairs; beak < 3 mm, widely attached
Seed 6.5–7 mm, red-brown
Ecology: UNCOMMON. Woodlands, chaparral, lower montane coniferous forests
Elevation: < 2500 m.
Bioregional distribution: San Bernardino Mountains, Peninsular Ranges
Distribution outside California: Baja California
Synonyms: Psoralea r. Parish; Hoita r. (Parish) Rydb
Horticultural information: TRY.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for RUPERTIA%20rigida 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 Rupertia rigida
Retrieve dichotomous key for Rupertia
Retrieve multiple-entry key (MEKA) for Rupertia
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
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