Flora of North America species comparison

decumbent to ascending, glabrous or sparsely strigulose.

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

4–9.5 cm;

stipules 2–5 mm, submembranous becoming papery;

leaflets 7–15(or 17), blades ovate, ovate-oblong, or obovate-cuneate, 5–20 mm, apex retuse, surfaces sparsely strigulose abaxially, glabrous adaxially.

(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.

5–20-flowered;

axis 1–4.5 cm in fruit;

bracts 0.8–2 mm;

bracteoles 0.

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

axis 2.5–16 cm in fruit;

bracts 1.5–10 mm;

bracteoles 0–2.

incurved-ascending, 3–9 cm.

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

0.5–1.2 mm.

1.2–3.5(–4) mm.

7–9 mm;

calyx 3.2–4.6 mm, strigulose, tube 2–2.9 mm, lobes subulate, 1–1.7 mm;

corolla whitish, sometimes faintly tinged lilac;

banner recurved through 45°;

keel 4.8–5.5 mm.

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.

pendulous, stramineous or brown, lunate, linear-ellipsoid, 3-sided compressed, 10–17 × 2.5–3.5 mm, papery, glabrous;

septum 1.3–2 mm wide;

stipe 1–1.5 mm.

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.

8–10.

(16–)18–26(–28).