Lathyrus palustris |
Lathyrus glandulosus |
|
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gesse des marais, marsh pea, marsh peavine, marsh vetchling |
redwood pea, sticky pea |
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Habit | Herbs perennial, from rhizome, glabrous or pubescent. | Herbs perennial, from rhizome, sparsely puberulent. |
Stems | narrowly to broadly winged, sprawling or climbing, basally branched 0–4 times, 2–10 dm. |
narrowly winged, erect, sprawling, or climbing, basally branched 0–2 times, 2–6 dm. |
Leaves | 1–6 cm; tendrils well developed; stipules ovate-lanceolate to linear, 5–25 × 1–10 mm, much smaller than leaflets; leaflets 4–8, paired, blades lanceolate to linear, 15–75 × 2–20 mm, surfaces glabrous, glabrate, or pubescent. |
14–18 cm; tendrils well developed; stipules lanceolate, 10–20 × 1–5 mm, much smaller than leaflets; leaflets 14–18, scattered, blades ovate to lanceolate, 30–50 × 10–20 mm, surfaces pubescent with eglandular trichomes, glandular-pubescent abaxially. |
Inflorescences | 2–7-flowered, 3–15 cm. |
7–12-flowered, 10–16 cm. |
Flowers | 10–15 mm; calyx lobes unequal, lateral lobes deltate, shorter than tube; corolla blue-purple, banner erect, blade equal to claw, wings equal to keel; ovary glandular-pubescent. |
10–14 mm; calyx lobes unequal, lateral lobes linear-triangular, longer than tube; corolla blue-purple, banner erect, blade longer than claw, wings equal to keel; ovary densely glandular-pubescent. |
Legumes | 25–60 × 4–8 mm. |
30–50 × 6–8 mm. |
2n | = 14. |
= 14. |
Lathyrus palustris |
Lathyrus glandulosus |
|
Phenology | Flowering Apr–Aug. | Flowering May–Jun. |
Habitat | Coastal and inland wetlands. | Roadsides, talus slopes, oak woodlands. |
Elevation | 0–1800 m. (0–5900 ft.) | 0–800 m. (0–2600 ft.) |
Distribution |
AK; AL; AR; CA; CO; CT; DC; DE; IA; IL; IN; KY; MA; MD; ME; MI; MN; MO; NC; ND; NE; NH; NJ; NY; OH; OR; PA; RI; SD; TN; VA; VT; WA; WI; WV; BC; MB; NB; NL; NS; NU; ON; PE; QC; SK; SPM
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CA |
Discussion | Morphological variation within Lathyrus palustris is extensive. Although the most distinctive forms (see synonyms) have been accorded formal nomenclatural recognition (M. L. Fernald 1911; C. L. Hitchcock 1952), intergradation among these mostly sympatric ecotypes is widespread (D. Isely 1998). In Nunavut, it is known only from Akimiski Island in James Bay. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lathyrus glandulosus is known only from Humboldt and northern Mendocino counties. (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. myrtifolius, L. palustris var. linearifolius, L. palustris var. macranthus, L. palustris var. myrtifolius, L. palustris subsp. pilosus, L. palustris var. pilosus, L. palustris var. retusus | |
Name authority | Linnaeus: Sp. Pl. 2: 733. (1753) | Broich: Madroño 33: 136, figs. 1, 2. (1986) |
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