Flora of North America species comparison

prostrate or decumbent, 0–7 cm underground, hirsute.

prostrate to weakly ascending, often flexuous, (1–)2–10(–15) cm underground, strigulose-villosulous or hirsutulous, hairs stiff, straight, spreading or subretrorse.

(1.5–)3–10(–12) cm;

stipules rarely connate at proximal nodes, 2–8.5 mm, mostly thinly herbaceous, sometimes papery at proximal nodes;

leaflets (3–)7–15, blades thin, obovate, broadly oblanceolate, or suborbiculate, (2–)5–22 mm, larger ones pinnately veined, apex cuneate to emarginate, surfaces villous-pilose abaxially, glabrous adaxially.

1.5–8.5 cm;

stipules connate-sheathing and papery at proximal nodes, obscurely connate or distinct and herbaceous or foliaceous at distal nodes, 1.5–6.5 mm;

leaflets 9–23, blades oblong to oblanceolate or obovate, 2–16 mm, apex obtuse, emarginate, or retuse, surfaces villosulous abaxially, villosulous or glabrate adaxially.

densely (5–)8–24-flowered;

axis 1–3(–4) cm in fruit;

bracts (2–)2.5–5 mm;

bracteoles 0.

5–37-flowered, flowers ascending to declined;

axis 1–7 cm in fruit;

bracts 1–3 mm;

bracteoles 0 or 1.

incurved-ascending, (2–)3–11 cm.

incurved-ascending or divaricate, 1.5–10 cm.

0.7–2.5 mm.

0.5–2.5 mm.

8.8–11.2 mm;

calyx 5.5–7.8(–8.2) mm, pilose, tube 2.7–3.7 mm, lobes lanceolate to lanceolate-attenuate, (2.7–)3–4.5(–5) mm;

corolla pale yellow to greenish ochroleucous, fading yellowish, keel immaculate;

banner recurved through 50–80°;

keel 7.2–9.7 mm, apex narrowly deltate, acute or subacute, often beaklike.

6–11 mm;

calyx campanulate, 3.4–6.3 mm, villosulous, tube 2.3–3.6 mm, lobes subulate, 0.9–2.9 mm;

corolla ochroleucous, fading yellowish, and usually suffused with purple;

banner recurved through 45°;

keel (5.7–)6–7.7 mm, apex broadly deltate.

ascending or spreading (humistrate), pale yellow green becoming stramineous then brownish, incurved or ± straight, slenderly lunate-ellipsoid or semi-ellipsoid, bluntly 3-sided compressed, (15–)17–25 × (2.8–)3.2–5.2 mm, subunilocular, thinly fleshy becoming stiffly papery, densely hirsute, hairs spreading-ascending, to 1.2–1.8 mm, lustrous white;

gynophore to 0.8 mm.

spreading to declined, green or purplish, brightly red-mottled, straight, ovoid, ovoid-ellipsoid, ellipsoid, or cylindroid-ellipsoid, bladdery-inflated or turgid, subterete to dorsiventrally compressed, 12–27 × 3.5–13 mm, papery or papery-membranous, sparsely villosulous;

stipe 0.3–1 mm.

12–18.

10–20.