Flora of North America species comparison

erect or ascending, sparsely strigulose.

erect or ascending, 4–24 cm underground and cream to stramineous, strigulose-pilose.

(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 distally, reduced to phyllodia, 1.5–6.5(–8) cm;

stipules 10–25 mm, firm, papery at proximal nodes, foliaceous at distal nodes;

leaflet blades (when present), decurrent, closely folded, linear to narrowly oblong, 2–17 mm, apex acute to obtuse, surfaces silvery-strigose;

terminal leaflet decurrent, not jointed to rachis.

(5–)10–30-flowered;

axis (1.5–)3–19 cm in fruit;

bracts 1–2 mm;

bracteoles 2.

8–45-flowered;

axis 2–28 cm in fruit;

bracts 2.5–7 mm;

bracteoles 0–2.

(2–)4–11 cm.

ascending or erect, 3.5–18 cm.

0.6–1.5 mm.

1–5 mm.

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.

12–19 mm;

calyx 7.2–10.9 mm, pilosulous, tube 4.2–6.6 mm, lobes lanceolate-subulate, 2.7–6 mm;

corolla pink to red-purple with pale or white wing tips;

keel 9.4–14.3 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.

dehiscent on plant, stramineous, straight to hamately incurved, 14–24 × 2.5–4.8 mm, stiffly papery, strigulose.

12–16.