Lathyrus latifolius |
Lathyrus polyphyllus |
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broad-leaf peavine, everlasting or perennial sweet pea, everlasting pea, everlasting peavine, everlasting vetchling, perennial pea, perennial peavine, perennial sweet pea, sweet pea |
leafy pea, leafy peavine, Oregon pea |
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Habit | Herbs perennial, from rhizome, glabrous. | Herbs perennial, from rhizome, glabrous. |
Stems | broadly winged, sprawling or climbing, basally branched 1–5 times, 8–20 dm. |
angled, erect, sprawling, or climbing, basally branched 0–2 times, 4–8 dm. |
Leaves | 2–5 cm, rachises broadly winged; tendrils well developed, branched; stipules lanceolate, 30–40 × 7–15 mm, at least 1/2 width of stem, much smaller than leaflets; leaflets 2, blades lanceolate-elliptic, 30–120 × 7–50 mm, surfaces glabrous. |
11–16 cm; tendrils well developed; stipules ovate to lanceolate, 20–30 × 10–30 mm, nearly equal to distal leaflets; leaflets 10–16, scattered, blades ovate to lanceolate, 30–50 × 10–30 mm, surfaces glabrous. |
Inflorescences | 5–15-flowered, 10–33 cm. |
8–12-flowered, 9–14 cm. |
Flowers | 15–20 mm; calyx lobes unequal, lateral lobes linear-triangular, shorter than tube; corolla purple, magenta, pink, or white, banner erect, blade longer than claw, wings equal to keel; ovary densely glandular-pubescent, style rotated 90° from ovary axis. |
15–18 mm; calyx lobes unequal, lateral lobes linear-triangular, equal to or longer than tube; corolla blue-purple, banner erect, blade longer than claw, wings equal to keel; ovary glabrous. |
Legumes | 50–110 × 5–10 mm. |
40–70 × 4–9 mm. |
2n | = 14. |
= 14. |
Lathyrus latifolius |
Lathyrus polyphyllus |
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Phenology | Flowering May–Sep. | Flowering Apr–Jul. |
Habitat | Roadsides, disturbed areas. | Openings in coniferous forests. |
Elevation | 50–2100 m. (200–6900 ft.) | 0–1800 m. (0–5900 ft.) |
Distribution |
AL; AR; AZ; CA; CO; CT; DC; DE; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; TN; TX; UT; VA; VT; WA; WI; WV; WY; BC; NB; NS; ON; PE; QC; Europe [Introduced in North America; introduced also in Mexico, South America (Argentina, Chile, Uruguay), Asia (China, Japan), n, e, s Africa, Pacific Islands (Hawaii, New Zealand), Australia]
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CA; OR; WA
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Discussion | Lathyrus latifolius is widely naturalized in North America and forms large thickets along roadsides, especially in the Pacific Coast states. M. J. W. Godt and J. L. Hamrick (1991) explored genetic variation within the species as it occurs in North America. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lathyrus polyphyllus is known from in and west of the Cascade Range. Lathyrus ecirrhosus A. Heller (1904), not Philippi (1892), is an illegitimate name that pertains here. (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 | ||
Name authority | Linnaeus: Sp. Pl. 2: 733. (1753) | Nuttall in J. Torrey and A. Gray: Fl. N. Amer. 1: 274. (1838) |
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