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Vascular Plants of California
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Lathyrus brownii


Higher Taxonomy
Family: Fabaceae (Leguminosae)View DescriptionDichotomous Key
Common Name: LEGUME FAMILY
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: LathyrusView DescriptionDichotomous Key


Common Name: WILD PEA
Habit: Annual, perennial herb, unarmed, glabrous or hairy (glandular), generally rhizomed. Stem: sprawling, climbing, or erect; angled, flanged, or winged. Leaf: generally even-1-pinnate; stipules persistent, upper lobe > lower; main axis ending as tendril or short bristle; leaflets +- rolled in bud, 0--16 (if 0, stipules leaflet-like), +- opposite or alternate, linear to widely ovate. Inflorescence: raceme, generally axillary, 1--many-flowered. Flower: upper calyx lobes generally <, wider than lower; corolla 8--30 mm, pink-purple or pale, occasionally white or yellow; 9 filaments fused, 1 free; style +- flat, puberulent near +- middle for +- 1/3--1/2 adaxially. Fruit: dehiscent, oblong, +- flat.
Species In Genus: +- 150 species: temperate North America, South America, Mediterranean, Eurasia. Etymology: (Ancient Greek name) Toxicity: Seeds of most alien species. TOXIC to humans, livestock (especially horses). Note: Some species variable, intergrading with others; some hybridization probable. Lathyrus aphaca L. (leaflets 0, stipules leaflet-like) not naturalized in California.
eFlora Treatment Author: Kelly Steele & Duane Isely
Reference: Broich 2007 Madroño 54:63--71
Unabridged Reference: Broich 1987 Syst Bot 12:139--153; Broich 2007 Madroño 54:63--71; Kenicer et al. 2005 Amer J Bot 92: 1199--1209.
Lathyrus brownii Eastw.
NATIVE
Habit: Perennial herb, glabrous. Stem: angled or flanged, not winged. Leaf: stipules widely ovate-triangular, often toothed; leaflets 6--10, 1--5 cm, generally ovate or elliptic, occasionally lance-oblong; tendril generally branched, coiled, at least on some leaves. Inflorescence: 2--6-flowered. Flower: calyx lobes < tube, often finely ciliate; corolla generally 10--14 mm, blue-purple to +- pink, petals upcurved, banner to +- 90°, above other petals, keel +- = wings. Fruit: glabrous.
Ecology: Dry, open woodland, streambanks; Elevation: 1000--1700 m. Bioregional Distribution: NCo, KR, CaR, n&c SN; Distribution Outside California: southern Oregon. Flowering Time: Apr--Jul
Synonyms: Lathyrus lanszwertii Kellogg var. brownii (Eastw.) Jeps.; Lathyrus pauciflorus Fernald subsp. brownii (Eastw.) Piper; Lathyrus pauciflorus var. brownii (Eastw) Piper
Jepson eFlora Author: Kelly Steele & Duane Isely
Reference: Broich 2007 Madroño 54:63--71
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Lathyrus brownii

botanical illustration including Lathyrus brownii

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Citation for this treatment: Kelly Steele & Duane Isely 2012, Lathyrus brownii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=30314, accessed on December 14, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on December 14, 2019.

Lathyrus brownii
click for enlargement
© 1992 Gary A. Monroe
Lathyrus brownii
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© 2016 Julie Kierstead Nelson
Lathyrus brownii
click for enlargement
© 1992 Gary A. Monroe

More photos of Lathyrus brownii in CalPhotos



Geographic subdivisions for Lathyrus brownii:
NCo, KR, CaR, n&c SN
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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 occurence).





 

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