Flora of North America species comparison

obscured by stipules.

from rhizome buds, internodes short and strongly flexuous, decumbent, ascending distally, 3–10(–14) cm underground, strigose.

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–)5–15 cm;

stipules bidentate, (2.5–)3.5–11 mm, papery, pallid;

leaflets (7 or)9–15(–21), blades broadly obovate or suborbiculate-obcordate, 4–20 mm, apex obtuse or widely and shallowly notched, surfaces strigose, sometimes less densely so adaxially.

1–3-flowered, subcapitate;

axis obsolete;

bracts sometimes tridentate, 3–6 mm;

bracteoles 0.

(15–)20–35-flowered, flowers nodding;

axis 3–7.5 cm in fruit;

bracts 2–5.5 mm.

± obsolete.

erect or divaricate, 1.5–5.5 cm.

± subobsolete.

0.6–2.2 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.

15.5–19 mm;

calyx deeply campanulate or subcylindric, 6.5–10 mm, sparsely strigulose, tube 5.5–7.3 mm, lobes subulate, 1–3 mm;

corolla ochroleucous, concolorous;

keel 11.5–13.5 mm.

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

erect or narrowly ascending, brown, ± straight or incurved through 0.25 spiral, oblong, slightly obcompressed, 1–1.5(–1.8) × (3–)4–6 mm, fleshy becoming leathery, sparsely strigulose;

sessile.

8 or 9.

(17–)20–28.