Flora of North America species comparison

ascending, erect, decumbent, or prostrate, sometimes diffuse, 2–6 cm underground, strigulose.

obscured by stipules and marcescent leaf bases.

(1–)1.5–10(–11) cm;

stipules connate-sheathing and papery at proximal nodes, connate or distinct and subherbaceous at distal nodes, 1–5 mm;

leaflets (5–)9–21, blades oblong-oblanceolate, elliptic, narrowly obovate, or linear-elliptic, 2–21 mm, apex obtuse to acute, surfaces usually strigulose, sometimes glabrescent or glabrous adaxially.

palmately trifoliolate, 1–13 cm;

stipules sometimes ruptured in age, 6–18 mm, hyaline;

leaflet blades spatulate to elliptic, (3–)7–27(–37) mm, apex acute to obtuse, surfaces silvery-strigose.

(3 or)4–16-flowered;

axis 0.5–7 cm in fruit;

bracts 1–3 mm;

bracteoles 0.

1–3-flowered, capitate;

axis very short in fruit;

bracts tridentate, 4.5–7.6 mm;

bracteoles 0(or 1).

incurved-ascending or erect, 1–9.5(–12) cm.

obsolete.

0.5–2.5 mm.

0–1.6 mm.

(8.3–)9–17.2 mm;

calyx campanulate, 4.5–9.3 mm, strigulose, hairs white, sometimes also black, tube 3.5–5.9 mm, lobes triangular, 0.5–3.6 mm;

corolla ochroleucous, pinkish white, lilac, or pink-purple, wing tips often paler than banner;

banner recurved through 50–80°;

keel 7.3–13.8, apex narrowly triangular, acute or subacute, often slightly beaked.

16–29 mm;

calyx 9.3–18(–20) mm, loosely villous, tube (6.5–)10–14(–16) mm, lobes linear or narrowly subulate, 1.6–4 mm;

corolla usually whitish to ochroleucous, rarely purple, petals usually glabrous, banner rarely puberulent adaxially;

banner not differentiated into blade and claw;

keel 10.4–21.8 mm.

green, usually red- or purple-mottled, becoming stramineous, balloon-shaped, bladdery-inflated, 15–60(–75) × (8–)10–25(–35) mm, apex broad, round, beak obsolete, papery-membranous, translucent, glabrous or strigulose;

stipe 2–9 mm.

straight, ovoid-ellipsoid, 6–10 × 2.5–5 mm, fleshy becoming leathery, densely strigose-hirsutulous.

(13–)15–30(–37).

10–17.