Lathyrus graminifolius |
Lathyrus grimesii |
|
---|---|---|
grass-leaf pea |
grimes' pea, grimes' vetchling |
|
Habit | Herbs perennial, from rhizome or woody rootstock, glabrous. | Herbs perennial, from rhizomelike rootstock, glabrous. |
Stems | angled, sprawling or climbing, sometimes branched at flowering nodes, 2–6 dm. |
angled, erect, branched 0–2 times basally or from proximal nodes, 0.5–2 dm. |
Leaves | 5–9 cm; tendrils usually well developed; stipules lanceolate to linear, 8–12 × 1–5 mm, much smaller than leaflets; leaflets 4–8, scattered, blades usually linear, rarely lanceolate, 30–80 × 1–20 mm, surfaces glabrous. |
1–2 cm; tendrils reduced to bristles; stipules lanceolate to linear, 5–15 × 1–5 mm, much smaller than leaflets; leaflets 4 or 6, paired, blades ovate to obovate, 10–25 × 5–10 mm, surfaces glabrous. |
Inflorescences | 5–8-flowered, 10–18 cm. |
2–4-flowered, 4–6 cm. |
Flowers | 8–15 mm; calyx lobes subequal, lateral lobes deltate, shorter than tube; corolla white to blue-orchid, banner erect, blade equal to claw, wings equal to keel; ovary glabrous. |
14–17 mm; calyx lobes unequal, lateral lobes deltate, shorter than tube; corolla bicolored lavender and white, banner erect, blade longer than claw, wings longer than keel, 1–3 mm; ovary glabrous. |
Legumes | 30–50 × 4–8 mm. |
25–30 × 8–10 mm, stipitate. |
2n | = 14. |
|
Lathyrus graminifolius |
Lathyrus grimesii |
|
Phenology | Flowering Apr–Aug. | Flowering Jun–Jul. |
Habitat | Slopes of ponderosa pine, mixed conifer, spruce-fir and oak-juniper forests. | Talus slopes in sagebrush communities. |
Elevation | 1000–2800 m. (3300–9200 ft.) | 1800–2600 m. (5900–8500 ft.) |
Distribution |
AZ; NM; TX; Mexico (Chihuahua, Sonora)
|
NV |
Discussion | Lathyrus graminifolius is known from the eastern half of Arizona to the western two-thirds of New Mexico and in trans-Pecos Texas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lathyrus grimesii is known only from the northern Independence Range and southern Bull Run Mountains in Elko County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lathyrus | Fabaceae > subfam. Faboideae > Lathyrus |
Sibling taxa | ||
Synonyms | L. palustris var. graminifolius | |
Name authority | (S. Watson) T. G. White: Bull. Torrey Bot. Club 21: 454. (1894) | Barneby in A. Cronquist et al.: Intermount. Fl. 3(B): 208, plate [p. 211], fig. s.n. [center right]. (1989) |
Web links |