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bushy vetchling, veiny pea, veiny peavine

bushy pea, Modoc pea, rigid pea, stiff pea, stiff peavine

Habit Herbs perennial, from rhizome, glabrous or pubescent. Herbs perennial, from rootstock, glabrous.
Stems

angled, sprawling or climbing, basally branched 0–3 times, 4–10 dm.

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

Leaves

6–18 cm;

tendrils well developed;

stipules lanceolate to linear, 10–20 × 2–10 mm, much smaller than distal leaflets (less than 1/4 width of distal leaflets);

leaflets 8–14, scattered, blades ovate to lanceolate, 25–70 × 10–35 mm, surfaces glabrous or pubescent.

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

5–20-flowered, 6–20 cm.

2- or 3-flowered, 4–9 cm.

Flowers

10–15 mm;

calyx lobes unequal, lateral lobes linear-triangular or lanceolate, shorter to longer than tube;

corolla blue-purple to rose, banner erect, blade equal to claw, wings equal to keel;

ovary glabrous or pubescent.

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

20–50 × 3–7 mm.

20–40 × 5–10 mm, stipitate.

2n

= 14.

Lathyrus venosus

Lathyrus rigidus

Phenology Flowering Apr–Jun.
Habitat Basalt scablands with sagebrush.
Elevation 800–1700 m. (2600–5600 ft.)
Distribution
from USDA
North America
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; ID; NV; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Herbs sparsely to densely pubescent.
var. intonsus
1. Herbs glabrous.
→ 2
2. Calyces: lateral lobes linear-triangular, equal to or shorter than tubes.
var. venosus
2. Calyces: lateral lobes lanceolate, longer than tubes.
var. arkansanus
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Lathyrus 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. rigidus, L. sphaericus, L. splendens, L. sulphureus, L. sylvestris, L. tingitanus, L. torreyi, L. tracyi, L. tuberosus, L. vestitus
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
Subordinate taxa
L. venosus var. arkansanus, L. venosus var. intonsus, L. venosus var. venosus
Synonyms L. albus
Name authority Muhlenberg ex Willdenow: Sp. Pl. 3: 1092. (1802) T. G. White: Bull. Torrey Bot. Club 21: 455. (1894)
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