Flora of North America species comparison

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

spreading to ascending, glabrous or glabrate.

(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.

4–12 cm;

stipules 3.5–9.5 mm, papery at proximal nodes, submembranous at distal nodes;

leaflets (11–)15–23, blades broadly oblong, ovate, or obovate to suborbiculate, (4–)6–16(–20) mm, apex retuse or abruptly short-acuminate, surfaces glabrous, sparsely ciliate, abaxially with few hairs on midrib.

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

axis 2.5–16 cm in fruit;

bracts 1.5–10 mm;

bracteoles 0–2.

10–25-flowered;

axis (1.5–)2–5 cm in fruit;

bracts 1.7–4 mm;

bracteoles 0.

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

erect or incurved-ascending, 5–12 cm.

1.2–3.5(–4) mm.

0.6–1.2 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.

10–14 mm;

calyx 5.2–7 mm, sparsely strigulose, tube 3.1–4 mm, lobes subulate, 2.1–3.2 mm;

corolla greenish white, immaculate, often drying cream;

banner recurved through 40–60°;

keel 7.7–10 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.

spreading or declined, stramineous or blackish, incurved to 0.5 spiral, lunately or falcately linear-lanceoloid or linear, 3-sided, 14–24 × 2.6–3.6 mm, firmly papery, glabrous;

septum 1.5–2.3 mm wide;

stipe 0.8–1.9 mm.

(16–)18–26(–28).

10–15.