Flora of North America species comparison

erect or ascending, usually flexuous and abruptly angled distal to each node, hirsute or hirsutulous.

obscured by stipules and marcescent leaf bases.

3–10(–11) cm;

stipules lanceolate-attenuate, (1.5–)2.5–8(–9) mm, herbaceous, sometimes papery at proximal nodes;

leaflet blades obovate to elliptic, (3–)5–19 mm, apex acute to obtuse or retuse, surfaces pubescent abaxially, sometimes 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.

10–25-flowered;

axis (1–)2–5 cm in fruit;

bracts (2.5–)4–12 mm;

bracteoles 0–2.

1–3-flowered, capitate;

axis very short in fruit;

bracts tridentate, 4.5–7.6 mm;

bracteoles 0(or 1).

erect, 1.5–5.5 cm.

obsolete.

0.5–2.3 mm.

0–1.6 mm.

12–15.3 mm;

calyx 9.5–13 mm, hirsute to hirsutulous, tube 7–8.6 mm, lobes subulate to linear-subulate, 2.5–5.5 mm;

corolla bicolored, keel tip maculate.

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.

stramineous, incurved, (20–)25–40 × (4–)5–7(–8) mm, thin becoming papery, glabrous.

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

10–17.

= 24.