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bushy vetchling, veiny pea, veiny peavine

redwood pea, Torrey's pea, Torrey's peavine

Habit Herbs perennial, from rhizome, glabrous or pubescent. Herbs perennial, from rhizome, finely villous.
Stems

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

angled, erect to sprawling, basally branched 0–3 times, 1–4 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.

2–7 cm;

tendrils absent or mucronate;

stipules lanceolate, 7–12 × 2–5 mm, much smaller than leaflets;

leaflets 8–16, scattered, blades ovate to lanceolate, 5–15 × 3–10 mm, surfaces villous.

Inflorescences

5–20-flowered, 6–20 cm.

1- or 2-flowered, 0.5–3 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.

8–12 mm;

calyx lobes unequal, lateral lobes linear-triangular, longer than tube;

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

ovary densely pubescent.

Legumes

20–50 × 3–7 mm.

15–20 × 4–5 mm.

2n

= 14.

Lathyrus venosus

Lathyrus torreyi

Phenology Flowering Apr–Jul.
Habitat Open coniferous forests.
Elevation 50–1500 m. (200–4900 ft.)
Distribution
from USDA
North America
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR; WA
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

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

Lathyrus torreyi is known from in and west of the Cascade Range; it is very rare in Washington.

(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. rigidus, L. sphaericus, L. splendens, L. sulphureus, L. sylvestris, L. tingitanus, L. tracyi, L. tuberosus, L. venosus, L. vestitus
Subordinate taxa
L. venosus var. arkansanus, L. venosus var. intonsus, L. venosus var. venosus
Name authority Muhlenberg ex Willdenow: Sp. Pl. 3: 1092. (1802) A. Gray: Proc. Amer. Acad. Arts 7: 337. (1868)
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