Flora of North America species comparison

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

erect or ascending, 4–24 cm underground and cream to stramineous, strigulose-pilose.

(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.

unifoliolate distally, reduced to phyllodia, 1.5–6.5(–8) cm;

stipules 10–25 mm, firm, papery at proximal nodes, foliaceous at distal nodes;

leaflet blades (when present), decurrent, closely folded, linear to narrowly oblong, 2–17 mm, apex acute to obtuse, surfaces silvery-strigose;

terminal leaflet decurrent, not jointed to rachis.

(15–)20–55(–65)-flowered;

axis (3–)5–20(–24) cm in fruit;

bracts 2–6 mm;

bracteoles 0.

8–45-flowered;

axis 2–28 cm in fruit;

bracts 2.5–7 mm;

bracteoles 0–2.

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

ascending or erect, 3.5–18 cm.

(1.2–)1.5–9 mm.

1–5 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.

12–19 mm;

calyx 7.2–10.9 mm, pilosulous, tube 4.2–6.6 mm, lobes lanceolate-subulate, 2.7–6 mm;

corolla pink to red-purple with pale or white wing tips;

keel 9.4–14.3 mm.

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

dehiscent on plant, stramineous, straight to hamately incurved, 14–24 × 2.5–4.8 mm, stiffly papery, strigulose.

= 22.