Flora of North America species comparison

erect or stiffly ascending, stout, with 5–10 well-developed internodes, pilose and tomentulose.

prostrate, strigose-strigulose or villous to pilosulous.

(9–)13–35 cm;

stipules distinct 6–17 mm, herbaceous;

leaflet blades broadly to narrowly elliptic, ovate, oblong-elliptic, or rhombic-elliptic, (7–)10–55 mm, apex acute or abruptly short-acuminate, often callous-apiculate, surfaces pilose and tomentulose.

1–4(–6) cm;

stipules connate-sheathing at proximal nodes, mostly connate at distal nodes, sometimes distinct, 0.8–3(–5) mm, thinly herbaceous becoming papery;

leaflets 7–15, blades obovate-cuneate, 1.5–9 mm, apex obtuse, truncate, or emarginate, surfaces sparsely villosulous abaxially, glabrescent adaxially.

(15–)20–55(–65)-flowered;

axis (3–)5–20(–24) cm in fruit;

bracts 2–6 mm;

bracteoles 0.

densely or loosely 2–13(–15)-flowered, flowers ascending then declined;

axis 0.3–1.5 cm in fruit;

bracts 1.2–2.7 mm;

bracteoles 0.

erect, (8–)10–27 cm, together with racemes shorter than stems.

0.3–2.5 cm.

(1.2–)1.5–9 mm.

0.4–1.3 mm.

(14.4–)15.5–22 mm;

calyx (7.8–)10–14.7 mm, silky-pilose or tomentulose, tube (6–)7–8.7 mm, lobes lanceolate-acuminate or linear-lanceolate, 3–6.5 mm;

corolla immaculate;

keel (11.5–)12–15.1 mm.

4.4–10(–12) mm;

calyx obconic-campanulate, (2.2–)2.6–4.7(–5) mm, sparsely villosulous, tube 1.1–2 mm, lobes subulate, 1–2.7 mm;

corolla whitish and banner veins faintly lilac, or rose-purple with pale basal eye;

banner recurved through 60–100°;

keel 3.5–3.7 mm, apex broadly deltate.

stiffly erect, becoming brownish stramineous then blackish, 15–25 × 8–13 mm, fleshy becoming leathery, glabrous.

spreading, yellowish, straight, ovoid-lenticular, obscurely 3-sided, 3.3–4.5 × 1.5–4.2 mm, unilocular, thinly papery, minutely strigulose to silky-villous.

2 or 3(or 4).

= 22.