Lathyrus brownii |
Lathyrus venosus |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
Brown's brush pea, Brown's pea, Brown's sweet pea |
bushy vetchling, veiny pea, veiny peavine |
|||||||||
Habit | Herbs perennial, from rhizome, glabrous. | Herbs perennial, from rhizome, glabrous or pubescent. | ||||||||
Stems | angled, sprawling, basally branched 0–3 times, 2–5 dm. |
angled, sprawling or climbing, basally branched 0–3 times, 4–10 dm. |
||||||||
Leaves | 4–6 cm; tendrils well developed; stipules linear, 5–15 × 1–5 mm, much smaller than leaflets; leaflets 6–10, scattered, blades ovate to linear, 15–40 × 1–10 mm, surfaces glabrous. |
6–18 cm; tendrils well developed; stipules lanceolate to linear, 10–20 × 2–10 mm, much smaller than distal leaflets (less than 1/4 width of distal leaflets); leaflets 8–14, scattered, blades ovate to lanceolate, 25–70 × 10–35 mm, surfaces glabrous or pubescent. |
||||||||
Inflorescences | 2–4-flowered, 3–4 cm. |
5–20-flowered, 6–20 cm. |
||||||||
Flowers | 12–16 mm; calyx lobes unequal, lateral lobes deltate, shorter than tube; corolla purple, banner erect, blade longer than claw, wings longer than keel (by 1–3 mm); ovary glabrous. |
10–15 mm; calyx lobes unequal, lateral lobes linear-triangular or lanceolate, shorter to longer than tube; corolla blue-purple to rose, banner erect, blade equal to claw, wings equal to keel; ovary glabrous or pubescent. |
||||||||
Legumes | 30–40 × 5–8 mm. |
20–50 × 3–7 mm. |
||||||||
Lathyrus brownii |
Lathyrus venosus |
|||||||||
Phenology | Flowering May–Jul. | |||||||||
Habitat | Stream banks, open ponderosa pine forests. | |||||||||
Elevation | 800–1800 m. (2600–5900 ft.) | |||||||||
Distribution |
CA; NV; OR
|
North America
|
||||||||
Discussion | Lathyrus brownii has been variously allied with L. pauciflorus (C. L. Hitchcock 1952) or with L. lanszwertii (R. C. Barneby 1989). It is distinct from L. pauciflorus by its smaller leaflets and flowers and by its range (northeastern California and adjacent Nevada and Oregon versus Colorado and Utah to Idaho, northeastern Oregon, and eastern Washington), and from L. lanszwertii by its larger flowers, smaller leaflets, general absence of pubescence, and its more typical prostrate, sprawling habit. C. L. Hitchcock (1952) considered Lathyrus schaffneri Rydberg as described by L. Abrams and R. S. Ferris (1923–1960, vol. 2) to be referable to L. brownii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||
Key |
|
|||||||||
Source | FNA vol. 11. | FNA vol. 11. | ||||||||
Parent taxa | Fabaceae > subfam. Faboideae > Lathyrus | Fabaceae > subfam. Faboideae > Lathyrus | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | L. lanszwertii var. brownii, L. pauciflorus subsp. brownii | |||||||||
Name authority | Eastwood: Bull. Torrey Bot. Club 30: 491. (1903) | Muhlenberg ex Willdenow: Sp. Pl. 3: 1092. (1802) | ||||||||
Web links |