Flora of North America species comparison

prostrate, silvery-pilose.

usually erect, sometimes decumbent and ascending, green or purplish, fistulose when stout, 1–7+ cm underground, strigose.

1–4 cm;

stipules 2–8 mm, hyaline, densely pilose abaxially;

leaflets usually 3, rarely 5, blades narrowly to broadly oblanceolate or obovate-cuneate, 3–13 mm, apex subacute, surfaces silvery-pilose.

(3–)5–25(–35) cm;

stipules 3–18 mm, membranous early becoming scarious;

leaflets (7–)13–35, blades lanceolate, lanceolate-oblong, or elliptic, (5–)6–45(–52) mm, apex obtuse, apiculate, or truncate-emarginate, surfaces strigose, sometimes glabrous adaxially.

(2 or)3–5-flowered;

axis to 1 cm in fruit;

bracts 1–2.5 mm.

20–100+-flowered, flowers spreading-declined;

axis 2.5–16 cm in fruit;

bracts 1.5–10 mm;

bracteoles 0–2.

0.5–2.5 cm.

erect or incurved-ascending, (2.5–)4–22 cm.

1–3.5 mm.

1.2–3.5(–4) mm.

5–6.2(–8) mm;

calyx campanulate, 2.4–4.2 mm, densely pilose, tube 2–3 mm, lobes triangular-subulate, 1–1.2 mm;

corolla pink-purple or white, often drying yellowish;

banner recurved through 90°;

keel 4–4.5 mm, apex bluntly deltate.

11.3–17(–17.5) mm;

calyx short-cylindric, (4.6–)5.5–10.5(–11) mm, strigose or pilosulous, tube 4–8.5 mm, lobes subulate or triangular, 1.2–4.4(–5) mm;

corolla ochroleucous, greenish white, or stramineous;

keel (9.5–)10.2–13.6 mm.

ascending or recurved, ovoid-ellipsoid, slightly compressed, 3–4.5 × 2 mm, papery, densely silky-strigose or silky-pilose.

brown then blackish, straight or incurved, cylindroid, terete, (9–)10–20 × 2.9–5.2 mm, somewhat fleshy becoming stiffly papery or leathery, usually strigose, strigulose, glabrate, or glabrous, rarely puberulent;

sessile or subsessile.

6–10.

(16–)18–26(–28).