Flora of North America species comparison

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

usually decumbent or ascending, sometimes erect, 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.

4–11 cm;

stipules connate-sheathing and papery at proximal nodes, connate or distinct and herbaceous at distal nodes, 1.5–10 mm;

leaflets (5–)9–15(–21), blades linear, filiform, or linear-oblanceolate, 15–70 mm, margins involute, apex acuminate, surfaces strigulose abaxially, glabrous adaxially;

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.

(7–)12–30-flowered, flowers nodding;

axis 3–13(–17) cm in fruit;

bracts 2–7 mm;

bracteoles 0.

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

incurved-ascending, (2–)3.5–8(–10.5) cm.

(1.2–)1.5–9 mm.

2–3(–3.5) 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.

(16–)21–24(–27) mm;

calyx 8–12 mm, strigulose, tube 6.5–9 × 2.8–4.3 mm, lobes subulate, 1.5–3 mm;

corolla white or ochroleucous, drying yellowish;

keel 13.8–16 mm.

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

declined or deflexed, stramineous or brown, straight or slightly decurved, ellipsoid or oblong-ellipsoid to clavate-ellipsoid, ± obcompressed, (10–)15–25 × (4.5–)5–8 mm, woody, glabrous;

sessile.

(23–)26–32.

= 22.

= 22.