Flora of North America species comparison

decumbent, trailing, erect, or ascending, mostly strigulose or villosulous, often glabrous or glabrate at proximal nodes.

erect or ascending, pilosulous.

5–16(–18) cm;

stipules distinct 1.5–6.5 mm, papery at proximal nodes, firm or submembranous at distal nodes;

leaflets (11 or)13–25, blades ovate, obovate, oblong-elliptic, elliptic, lanceolate-oblong, oblanceolate, or linear-oblong, 5–25(–30) mm, apex usually obtuse, retuse, or truncate and apiculate, rarely subacute, surfaces glabrous.

both cauline and in sub-basal cluster, (5–)7–20 cm;

stipules connate-sheathing at proximal nodes, (3–)5–11 mm, fragile, submembranous early becoming papery-scarious;

leaflets 25–37, blades linear-elliptic, linear-oblong, oblanceolate, or ovate-oblong, 5–27 mm, apex obtuse, acute, or retuse, surfaces pilosulous, sometimes glabrous adaxially;

terminal leaflet often continuous with rachis.

(10–)12–30(–35)-flowered, flowers subhorizontal or ascending;

axis (2–)2.5–12(–17) cm in fruit;

bracts 1–3 mm.

(6–)10–30-flowered, flowers ascending to spreading;

axis (3–)5–18 cm in fruit;

bracts 2–9.5 mm;

bracteoles 2.

erect, 2.5–13 cm.

erect, 12–30 cm, together with racemes longer than stems.

0.8–4(–4.8) mm.

1–3.7 mm.

(6.4–)7.8–13 mm;

calyx campanulate or ovoid-campanulate, 4–6.6 mm, strigulose, tube (2.5–)2.6–4.3 mm, lobes subulate, deltate, or triangular, 0.7–2.6 mm;

corolla ochroleucous, yellowish, or greenish white;

banner abruptly recurved through 60–90°, (6.4–)7.8–13 mm;

keel (6.2–)7.1–10.8 mm, apex narrowly deltate and triangular, subacute, somewhat beaklike.

18–23 mm;

calyx short-cylindric, (10–)11–15 mm, strigulose-pilosulous, tube (5.7–)6–7.9 × 3.6–4.8 mm, lobes lanceolate or lanceolate-caudate, (2.6–)4.6–6.7(–7.5) mm;

corolla cream, immaculate;

banner recurved through 45°;

keel 13.4–15.6 mm.

spreading or ascending (sometimes humistrate), pale green, sometimes purple-tinged or -speckled, becoming stramineous, obliquely ovoid, semi-ovoid or semi-ellipsoid, bladdery-inflated, somewhat obcompressed, 25–60 × 12–32 mm, beak prominent, papery, ± lustrous, usually strigulose, rarely glabrescent.

brownish stramineous, ± straight, broadly oblong-ovoid to narrowly oblong-ellipsoid, obcompressed, 11–22 × 4.5–7.2 mm, unilocular or sub-bilocular, fleshy becoming stiffly leathery or subligneous, usually villous-pilose or glabrescent, rarely glabrous;

septum to 1 mm wide;

sessile.

42–71(–76).