Flora of North America species comparison

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

to 6 cm, internodes ± obscured by stipules, densely villosulous and 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.

4–12 cm;

stipules 3.5–7 mm, submembranous becoming papery;

leaflets 11–17, blades elliptic to obovate, 2–14 mm, apex short-acuminate to acute, surfaces strigulose-villosulous, hairs ascending, dull.

(15–)20–55(–65)-flowered;

axis (3–)5–20(–24) cm in fruit;

bracts 2–6 mm;

bracteoles 0.

5–10-flowered, flowers ascending;

axis 0.5–2 cm in fruit;

bracts 3–6 mm;

bracteoles 0–2.

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

ascending, 2–5.5 cm.

(1.2–)1.5–9 mm.

2–3 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.

18–22.5 mm;

calyx cylindric, 8.4–12 mm, villous, tube 6.2–7.5 mm, lobes subulate, 2–4 mm;

corolla whitish suffused with pale purple, keel tip purple;

banner recurved through 40°;

keel 12–13.3 mm, 4.5–9 mm shorter than banner.

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

ascending (not humistrate), sessile or substipitate, incurved, ovoid-ellipsoid, obcompressed, 10–20 × 5–10 mm, unilocular, fleshy becoming stiffly leathery, densely hirsute, hairs lustrous, concealing surface, longest 2–2.5 mm.

14–16.

= 22.