Flora of North America species comparison

erect or ascending, pilosulous.

decumbent proximally, erect distally, 2–10 cm underground, often fistulose, sparsely strigulose.

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.

5–22 cm;

stipules connate-sheathing at proximal nodes, distinct at distal nodes, 3–9 mm;

leaflets 13–21, blades ovate to obovate, lanceolate, or elliptic, 4–24 mm, apex obtuse to retuse, surfaces strigose along veins abaxially, glabrous adaxially.

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

axis (3–)5–18 cm in fruit;

bracts 2–9.5 mm;

bracteoles 2.

(15–)20–40-flowered;

axis (4–)10–16 cm in fruit;

bracts 1.5–4 mm;

bracteoles 0–2.

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

(4–)9–23 cm.

1–3.7 mm.

0.7–3.5 mm.

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.

(11–)14–18 mm;

calyx 5–6 mm, strigose, tube 4–5 mm, lobes triangular to subulate, 0.5–0.9(–1.2) mm;

corolla ochroleucous;

banner recurved through 25°.

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.

erect, ovoid to ellipsoid, obcompressed, inflated (turgid), 12–18 × 8–10(–12) mm, papery, glabrous;

septum to 0.2 mm wide;

stipe slender, 7–15 mm.