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big deervetch, broad leaf lotus

Habit Herbs 70–150 cm, villous or sparsely strigulose to glabrate; root-spreading.
Stems

(1–)5–20+, ascending to erect, fleshy, stout, hollow.

Leaves

stipules triangular or ovate to lanceolate, (2–)5–8 mm, membranous becoming scarious, often becoming inconspicuous; short-petiolate to petiolate;

rachis often curved, 6–12 cm;

leaflets (7–)9–15(–19), petiolulate, blades widely ovate to widely elliptic or widely obovate, (10–)20–30 mm, apex obtuse to emarginate, surfaces sparsely strigillose to glabrate.

Peduncles

ascending, 3–8 cm, usually shorter than, rarely equaling, subtending leaf, elongating in fruit, glabrate or glabrous;

bract medial or absent, leaflets (1 or)3 or 5-foliolate.

Umbels

8–20-flowered.

Flowers

asymmetric, 12–16(–18) mm;

calyx green marked with purplish or pinkish, or purplish to pinkish, 4.5–8 mm, glabrous, tube cylindric, 4–6 mm, lobes deltate, 0.5–2 mm, sparsely ciliolate or eciliate;

corolla greenish or whitish becoming marked with red or purple, wings ± equaling keel, claw ± longer than calyx tube, banner implicate-ascending to 45°, keel apex acute.

Legumes

± ascending to inclined, reddish to brown, linear, turgid, (10–)35–70 × 3–5 mm, leathery, incompletely septate, glabrous.

Seeds

7–12, olive or reddish to dark brown, obovoid, 3–4 mm.

2n

= 14.

Hosackia crassifolia

Distribution
from USDA
w United States; nw Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

Lotus crassifolius (Bentham) Greene [not Persoon] is an illegitimate name that pertains to Hosackia crassifolia.

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

Key
1. Herbs glabrate or sparsely strigulose; ovules.
var. crassifolia
1. Herbs villous; ovules 14–21.
var. otayensis
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Hosackia
Sibling taxa
H. alamosana, H. gracilis, H. incana, H. oblongifolia, H. pinnata, H. rosea, H. stipularis, H. yollabolliensis
Subordinate taxa
H. crassifolia var. crassifolia, H. crassifolia var. otayensis
Name authority Bentham: Trans. Linn. Soc. London 17: 365. (1836)
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