Flora of North America species comparison

erect or ascending, sparsely strigulose.

obscured by stipules and marcescent leaf bases.

(3–)4–12 cm;

stipules connate and scarious-papery at proximal nodes, distinct and herbaceous at distal nodes, 1.5–5 mm;

leaflets (17–)21–29, blades flat or loosely folded, oblong-oblanceolate or elliptic, 3–13 mm, apex obtuse to subacute, surfaces sparsely strigulose abaxially, glabrate or glabrous adaxially.

unifoliolate or palmately trifoliolate, 1–3.5 cm;

stipules sometimes ruptured in age, 7–12 mm, hyaline;

leaflet blades spatulate to elliptic, (3–)5–9 mm, apex acute to subacute, surfaces silvery-pilosulous.

(5–)10–30-flowered;

axis (1.5–)3–19 cm in fruit;

bracts 1–2 mm;

bracteoles 2.

1- or 2-flowered, capitate;

axis obsolete or very short;

bracts sometimes tridentate, 3–6 mm;

bracteoles 2.

(2–)4–11 cm.

subobsolete.

0.6–1.5 mm.

subobsolete.

5.8–8 mm;

calyx marcescent, 3.4–4.3 mm, strigulose, hairs black and/or white, tube 2.1–2.7 mm, lobes subulate, 1–2 mm;

corolla whitish or, sometimes, greenish ochroleucous, immaculate;

banner abruptly incurved through 90°;

keel 4.2–5.6 mm.

12.3–17 mm;

calyx 8.3–10.5 mm, loosely villous, tube 5.9–6.5 mm, lobes linear to narrowly subulate, 2.4–4.2 mm;

corolla whitish to ochroleucous, petals glabrous abaxially;

banner differentiated into blade and claw, with shoulderlike projections at middle;

keel 11.1–12.8 mm.

stramineous, straight or slightly incurved or decurved, linear-oblong or linear-oblanceolate, 3-sided compressed, 15–30 × (2.5–)3–4 mm, bilocular, papery, glabrous;

valves inflexed as complete septum 1.4–1.9 mm wide;

stipe 1.5–2.5 mm.

green, straight or slightly decurved, narrowly ellipsoid, 7–10 × 2.5–3 mm, fleshy becoming leathery, densely strigose-hirsutulous.

12–16.

11–14.