Flora of North America species comparison

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Lathyrus rigidus

bushy pea, Modoc pea, rigid pea, stiff pea, stiff peavine
Habit Herbs perennial, from rootstock, glabrous.
Stems

angled, erect, basally branched 5–10 times, 1–3 dm.
Leaves

1–3 cm;

tendrils bristlelike, less than 1 cm;

stipules lanceolate, 10–15 × 1–8 mm, equal to distal leaflets;

leaflets 4–8, paired, blades lanceolate, 15–30 × 5–10 mm, surfaces glabrous.
Inflorescences

2- or 3-flowered, 4–9 cm.
Flowers

12–18 mm;

calyx lobes ± unequal, lateral lobes deltate, shorter than tube;

corolla white to lilac, banner erect, blade longer than claw, wings longer than keel;

ovary glabrous.
Legumes

20–40 × 5–10 mm, stipitate.
2n

= 14.

Lathyrus rigidus
Phenology Flowering Apr–Jun.
Habitat Basalt scablands with sagebrush.
Elevation 800–1700 m. (2600–5600 ft.)
Distribution
from FNA
CA; ID; NV; OR
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Lathyrus
Sibling taxa
L. angulatus, L. aphaca, L. biflorus, L. brachycalyx, L. brownii, L. cicera, L. decaphyllus, L. delnorticus, L. eucosmus, L. glandulosus, L. graminifolius, L. grimesii, L. hirsutus, L. hitchcockianus, L. holochlorus, L. japonicus, L. jepsonii, L. laetivirens, L. lanszwertii, L. latifolius, L. littoralis, L. nevadensis, L. nissolia, L. ochroleucus, L. odoratus, L. palustris, L. pauciflorus, L. polyphyllus, L. pratensis, L. pusillus, L. sphaericus, L. splendens, L. sulphureus, L. sylvestris, L. tingitanus, L. torreyi, L. tracyi, L. tuberosus, L. venosus, L. vestitus
Synonyms L. albus
Name authority T. G. White: Bull. Torrey Bot. Club 21: 455. (1894)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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