Flora of North America species comparison

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

erect or ascending, finely 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.

compound proximally, unifoliolate or reduced to phyllodia distally, sometimes unifoliolate throughout, 2.5–9 cm;

stipules connate-sheathing and papery-scarious at proximal nodes, connate or distinct and herbaceous with scarious margins becoming papery at distal nodes, 1.2–7 mm;

leaflets (0 or 1–)3–9, blades linear to linear-elliptic, 10–28 mm, apex obtuse to acute, surfaces 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.

3–15-flowered, flowers ascending-spreading;

axis 0.5–6 cm in fruit;

bracts 1.2–2 mm;

bracteoles 1 or 2.

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

erect, 7–21 cm.

(1.2–)1.5–9 mm.

1.5–3 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 mm;

calyx 6.4–9.6 mm, strigulose, tube 5.6–6.7 × 2.8–5.2 mm, lobes triangular-subulate, 0.9–2.9 mm;

corolla usually pink-purple with white wing tips, rarely white throughout;

keel 12–16 mm.

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

deflexed or declined, stramineous, straight or slightly incurved, narrowly oblong, laterally compressed, bicarinate by sutures, (15–)20–35 × 4.4–6(–7) mm, thinly fleshy becoming stiffly papery, terminal cusp 0.5–1 mm, strigose to glabrate;

sessile or subsessile.

19–29.

= 22.

= 22.