Flora of North America species comparison

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

prostrate-ascending, hirsute.

(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.

5–15 cm;

stipules 3–6 mm, herbaceous;

leaflet blades oblong-obovate or -ovate, 4–17 mm, apex retuse, surfaces hirsute.

(15–)20–55(–65)-flowered;

axis (3–)5–20(–24) cm in fruit;

bracts 2–6 mm;

bracteoles 0.

5–15-flowered;

axis scarcely elongating;

bracts 1.5–3 mm;

bracteoles 0.

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

1.5–4 cm.

(1.2–)1.5–9 mm.

0.6–1 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.

5–6.5 mm;

calyx 5–6.5 mm, densely white or white and black hairy, lobes filiform, 2–5 mm (longer than tube);

corolla keel 5–6.5 mm.

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

blackish brown at maturity, coiled through 0.75–1.25 spiral into a ring, 6–8 mm diam., 2–3 mm wide, papery, grooved dorsally, sparsely hirsutulous.

= 22.

= 16.