Lathyrus ochroleucus |
Lathyrus eucosmus |
|
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cream pea, cream vetchling, cream-flower peavine, cream-flower sweet pea, creamy peavine, pale vetchling |
bush vetchling, seemly pea |
|
Habit | Herbs perennial, from rhizome, glabrous except calyx ciliate. | Herbs perennial, from rhizome, glabrous or puberulent. |
Stems | angled, sprawling or climbing, basally branched 0–3 times, 3–8 dm. |
angled, erect, basally branched 0–2 times, 2–5 dm. |
Leaves | (2–)3–10 cm; tendrils well developed; stipules somewhat foliose, ovate-lanceolate, 15–35 × 5–20 mm, sometimes equal to distal leaflets; leaflets (5 or)6(–8), usually paired, blades broadly ovate to lanceolate, (20–)25–65 × 10–35(–42) mm, surfaces glabrous. |
2–4 cm; tendrils simple or branched, sometimes prehensile; stipules linear, 5–15 × 1–2 mm, much smaller than leaflets; leaflets 6 or 8, scattered, blades ovate to lanceolate, 15–45 × 4–10 mm, surfaces glabrous throughout or puberulent abaxially. |
Inflorescences | 4–10(–13)-flowered, 3–12 cm. |
2–4-flowered, 7–12 cm. |
Flowers | 10–15 mm; calyx lobes unequal, lateral lobes lanceolate, usually longer than tube; corolla cream-white, banner erect, blade longer than claw, wings equal to keel; ovary glabrous. |
18–20 mm; calyx lobes unequal, lateral lobes deltate, shorter than tube; corolla blue-purple, banner erect, blade longer than claw, wings equal to keel (held above keel); ovary glabrous. |
Legumes | 30–70 × 4–7 mm. |
40–50 × 8–10 mm, short-stipitate. |
2n | = 14. |
= 14. |
Lathyrus ochroleucus |
Lathyrus eucosmus |
|
Phenology | Flowering Apr–Jul. | Flowering Apr–Jun. |
Habitat | Moist woodlands, clearings, thickets, glades, meadows. | Dry soils in washes, pinyon-juniper woodlands, oak-brush, ponderosa pine forests, open prairies, grasslands. |
Elevation | 0–1500 m. (0–4900 ft.) | 1200–2500 m. (3900–8200 ft.) |
Distribution |
AK; IA; ID; IL; IN; MI; MN; MT; ND; NE; NJ; NY; OH; PA; SD; VT; WA; WI; WV; WY; AB; BC; MB; NT; NU; ON; QC; SK; YT
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AZ; CO; NM; TX; UT; WY; Mexico (Coahuila)
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Discussion | Lathyrus eucosmus is known from the northern two-thirds of Arizona northward to southeastern Utah, and eastward in southeastern Wyoming, Colorado, New Mexico, and Texas to the edge of the Great Plains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lathyrus | Fabaceae > subfam. Faboideae > Lathyrus |
Sibling taxa | ||
Synonyms | L. nevadensis subsp. stipulaceus | L. brachycalyx subsp. eucosmus, L. brachycalyx var. eucosmus |
Name authority | Hooker: Fl. Bor.-Amer. 1: 159. (1831) | Butters & H. St. John: Rhodora 19: 160. (1917) |
Web links |