Flora of North America species comparison

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

prostrate to decumbent-ascending, 5–14 cm underground, strigulose.

(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.

1.5–4.5 cm;

stipules distinct throughout, 2–6 mm, papery at proximal nodes, herbaceous at distal nodes;

leaflets 7–15, blades oblong to narrowly elliptic, 6–23 mm, apex retuse to truncate, surfaces strigose abaxially, glabrate adaxially.

(15–)20–55(–65)-flowered;

axis (3–)5–20(–24) cm in fruit;

bracts 2–6 mm;

bracteoles 0.

6–20-flowered, flowers nodding;

axis 1.5–8.5 cm in fruit;

bracts 0.6–1.2 mm;

bracteoles 1.

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

divaricate and incurved-ascending, 2–6.5 cm.

(1.2–)1.5–9 mm.

1.5–2.5 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.

8–9 mm;

calyx campanulate, 3.8–5.3 mm, strigose, tube 3.3–4 mm, lobes triangular, 0.5–1.3 mm;

corolla dull pink-purple, or lilac to vivid reddish purple;

banner recurved through 90–100°;

keel 8–8.5 mm, apex sharply deltate.

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

declined or pendulous, green or faintly red-dotted becoming stramineous, usually straight or incurved, rarely decurved, narrowly ellipsoid, 3-sided compressed, 13–30 × 3–4.8 mm, semibilocular, papery, strigose;

valves inflexed, septum 0.3–0.6 mm;

stipe 0–0.8 mm.

16 or 17.

= 22.