Lathyrus odoratus |
Lathyrus graminifolius |
|
---|---|---|
common sweet pea, gesse odorante, sweet pea, sweet vetchling |
grass-leaf pea |
|
Habit | Herbs annual, glabrous or sparsely pubescent. | Herbs perennial, from rhizome or woody rootstock, glabrous. |
Stems | broadly winged, climbing, basally branched 1–3 times, 8–30 dm. |
angled, sprawling or climbing, sometimes branched at flowering nodes, 2–6 dm. |
Leaves | 2–6 cm, rachises winged; tendrils well developed; stipules lanceolate, 10–25 × 2–6 mm, smaller than leaflets; leaflets 2, blades ovate or obovate, 15–50 × 10–40 mm, surfaces glabrous or sparsely pustulose-hirsute. |
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. |
Inflorescences | 2–4-flowered, 10–20 cm. |
5–8-flowered, 10–18 cm. |
Flowers | 20–25 mm; calyx lobes equal, lateral lobes linear-triangular to lanceolate, equal to tube; corolla white, pink, purple, violet, or blue, banner erect, blade much longer than claw, wings longer than keel; ovary densely pustulose-hirsute, style rotated 90° from ovary axis. |
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. |
Legumes | 50–70 × 8–15 mm. |
30–50 × 4–8 mm. |
2n | = 14. |
= 14. |
Lathyrus odoratus |
Lathyrus graminifolius |
|
Phenology | Flowering Apr–May. | Flowering Apr–Aug. |
Habitat | Disturbed areas. | Slopes of ponderosa pine, mixed conifer, spruce-fir and oak-juniper forests. |
Elevation | 50–400 m. (200–1300 ft.) | 1000–2800 m. (3300–9200 ft.) |
Distribution |
AZ; CA; CT; IL; IN; KY; ME; MI; OH; OK; SC; TN; TX; VA; WV; MB; NF; ON; QC; Europe [Introduced in North America; introduced also in Mexico (México), Asia (China, India), n, e Africa, Pacific Islands (New Zealand), Australia]
|
AZ; NM; TX; Mexico (Chihuahua, Sonora)
|
Discussion | Lathyrus odoratus is cultivated as an ornamental and is an occasional escape. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
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 | Linnaeus: Sp. Pl. 2: 732. (1753) | (S. Watson) T. G. White: Bull. Torrey Bot. Club 21: 454. (1894) |
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