Jepson eFlora: Taxon page
Vascular Plants of California
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Amorpha californica var. napensis


Higher Taxonomy
Family: Fabaceae (Leguminosae)View DescriptionDichotomous Key
Habit: Annual to tree. Leaf: generally alternate, generally compound, generally stipuled, generally entire, pinnately veined Inflorescence: generally raceme, spike, umbel or head; or flowers 1--few in axils. Flower: generally bisexual, generally bilateral; hypanthium 0 or flat to tubular; sepals generally 5, generally fused; petals generally 5, free, fused, or lower 2 +- united into keel (see 3, Key to Groups, for banner, wings); stamens 10 or many (or [1], 5, 6, 7, 9), free or fused or 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, including a stalk-like base (above receptacle) or not. Seed: 1--many, often +- reniform, generally hard, smooth.
Genera In Family: +- 730 genera, 19400 species: worldwide; with grasses, requisite in agriculture, most natural ecosystems. Many cultivated, most importantly Arachis, peanut; Glycine, soybean; Phaseolus, beans; Medicago, alfalfa; Trifolium, clovers; many orns. Note: Unless stated otherwise, fruit length including stalk-like base, number of 2° leaflets is per 1° leaflet. Upper suture of fruit adaxial, lower abaxial. Anthyllis vulneraria L. evidently a waif, a contaminant of legume seed from Europe. Laburnum anagyroides Medik., collected on Mount St. Helena in 1987, may be naturalized. Ceratonia siliqua L., carob tree (Group 2), differs from Gleditsia triacanthos L. in having evergreen (vs deciduous) leaves that are 1-pinnate (vs 1-pinnate on spurs on old stems, 2-pinnate on new stems) with 2--5(8) (vs 7--17) 1° leaflets, commonly cultivated, now naturalized in southern California. Aeschynomene rudis Benth. , Halimodendron halodendron (Pall.) Voss (possibly extirpated), Lens culinaris Medik. are agricultural weeds. Caragana arborescens Lam. only cult. Ononis alopecuroides L. , Sphaerophysa salsula (Pall.) DC. all evidently extirpated. Cercidium moved to Parkinsonia; Chamaecytisus to Cytisus; Psoralidium lanceolatum to Ladeania.
eFlora Treatment Author: Martin F. Wojciechowski, except as noted
Scientific Editor: Martin F. Wojciechowski, Thomas J. Rosatti.
Genus: AmorphaView DescriptionDichotomous Key

Habit: Shrub, unarmed, gland-dotted. Leaf: odd-1-pinnate; stipules bristle-like, ephemeral; leaflets with minute stipule-like appendages. Inflorescence: raceme, spike-like, terminal. Flower: petal 1 (banner), +- purple; stamens 10, exserted, filaments fused near base; style puberulent. Fruit: indehiscent. Seed: 1.
Etymology: (Greek: deformed, from 1 petal)
eFlora Treatment Author: Steve Boyd & Duane Isely
Reference: McMahon & Hufford 2004 Amer J Bot 91:1219--1230
Unabridged Reference: Wilbur 1975 Rhodora 77:337--409
Species: Amorpha californicaView Description 

Leaf: main axis with prickle-like glands; leaflet midrib generally ending as sessile, head-like gland <= 0.5 mm. Inflorescence: generally 1 per stem tip. Chromosomes: 2n=20.

Amorpha californica Nutt. var. napensis Jeps.
Habit: Plant +- glabrous. Flower: longest calyx lobe (except gland at tip) 0.5--1 mm.
Ecology: Chaparral; Elevation: < 800 m. Bioregional Distribution: s NCoR (Napa, Sonoma cos.), n SnFrB (Marin Co.). Flowering Time: May--Jul
Jepson eFlora Author: Steve Boyd & Duane Isely
Reference: McMahon & Hufford 2004 Amer J Bot 91:1219--1230
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

Previous taxon: Amorpha californica var. californica
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Citation for this treatment: Steve Boyd & Duane Isely 2012, Amorpha californica var. napensis, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on July 13, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on July 13, 2024.

No expert verified images found for Amorpha californica var. napensis.

Geographic subdivisions for Amorpha californica var. napensis:
s NCoR (Napa, Sonoma cos.), n SnFrB (Marin Co.).
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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 occurrence).


Data provided by the participants of the  Consortium of California Herbaria.

View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month Flowering-Fruiting Monthly Counts

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 (fruiting time in some monocot genera).