Flora of North America species comparison

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

many, decumbent, glabrous or sparsely strigose.

(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.

3–7 cm;

stipules 2.5–5 mm, membranous or membranous-margined;

leaflets 13–25(–29), blades oblanceolate or obovate-cuneate, 6–16 mm, apex retuse or apiculate, surfaces glabrous (except midrib sparsely strigose) abaxially, glabrous adaxially.

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

axis 2.5–16 cm in fruit;

bracts 1.5–10 mm;

bracteoles 0–2.

5–7-flowered, flowers ascending;

axis 1.5–2 cm in fruit;

bracts 2–4 mm;

bracteoles 2.

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

reclined in fruit, 2–6 cm.

1.2–3.5(–4) mm.

1.5–5 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.

16–23 mm;

calyx short-cylindric, 9.5–11 mm, strigulose, tube 5.5–6.5 mm, lobes linear-subulate, 3.5–4.5 mm;

corolla whitish;

keel 12–13 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.

ascending (humistrate), stramineous, slightly incurved, obliquely oblong-ovoid, obcompressed, 20–40 × (9–)11–19 mm, bilocular, fleshy becoming woody, glabrous;

septum 3–4 mm wide;

stipe 5–20 mm.

(16–)18–26(–28).

26–28.