Flora of North America species comparison

obscured by stipules.

spreading to ascending and diffuse, with well-developed internodes, sparsely strigulose.

palmately trifoliolate, 0.7–3 cm;

stipules 6–10 mm, hyaline;

leaflet blades spatulate to obovate, 2.5–10 mm, apex subacute to obtuse, surfaces silvery-pilose.

(2.5–)4.5–10.5 cm;

stipules connate-sheathing at proximal nodes, distinct at distal nodes, 1.5–6 mm, papery-scarious;

leaflets (7–)15–25, blades linear-oblong, -oblanceolate, or filiform, 1–11 mm, apex obtuse or subacute, surfaces strigulose abaxially, glabrous adaxially;

terminal leaflet sometimes decurrent distally, not jointed to rachis.

1–3-flowered, subcapitate;

axis obsolete;

bracts sometimes tridentate, 3–6 mm;

bracteoles 0.

(5–)8–20-flowered;

axis (2–)3–10 cm in fruit;

bracts 0.7–2 mm;

bracteoles 0–2.

± obsolete.

(0.5–)1.5–7 cm.

± subobsolete.

0.7–2 mm.

12.5–17.5 mm;

calyx 7.3–10.7 mm, silvery-villous, tube 5.8–7.5 mm, lobes linear to narrowly subulate, 1.5–3.7 mm;

corolla whitish to ochroleucous, petals villous abaxially;

banner differentiated into blade and claw, with shoulderlike projections at middle;

keel 10–13 mm.

6–8.2 mm;

calyx 2.5–5 mm, strigulose, tube (1.5–)1.8–3 mm, lobes subulate, 0.8–2 mm;

corolla usually white or whitish, rarely yellow, drying yellowish, banner sometimes brownish-striate;

banner abruptly recurved through (50–)85–100°;

keel 4.7–5.7 mm.

straight or slightly decurved, narrowly ellipsoid, 7–10 × 2.5–3.5 mm, fleshy becoming leathery, densely strigose-hirsutulous.

pendulous, stramineous, slightly incurved, lunately semi-ellipsoid, 3-sided compressed, 9–16 × 3–4.5 mm, papery, finely strigulose;

septum 1.3–2 mm wide;

stipe 3–5 mm.

8 or 9.

11–16.