Flora of North America species comparison

erect or ascending, sparsely strigulose.

ascending, erect, decumbent, or prostrate, sometimes diffuse, 2–6 cm underground, strigulose.

(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.

(1–)1.5–10(–11) cm;

stipules connate-sheathing and papery at proximal nodes, connate or distinct and subherbaceous at distal nodes, 1–5 mm;

leaflets (5–)9–21, blades oblong-oblanceolate, elliptic, narrowly obovate, or linear-elliptic, 2–21 mm, apex obtuse to acute, surfaces usually strigulose, sometimes glabrescent or glabrous adaxially.

(5–)10–30-flowered;

axis (1.5–)3–19 cm in fruit;

bracts 1–2 mm;

bracteoles 2.

(3 or)4–16-flowered;

axis 0.5–7 cm in fruit;

bracts 1–3 mm;

bracteoles 0.

(2–)4–11 cm.

incurved-ascending or erect, 1–9.5(–12) cm.

0.6–1.5 mm.

0.5–2.5 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.

(8.3–)9–17.2 mm;

calyx campanulate, 4.5–9.3 mm, strigulose, hairs white, sometimes also black, tube 3.5–5.9 mm, lobes triangular, 0.5–3.6 mm;

corolla ochroleucous, pinkish white, lilac, or pink-purple, wing tips often paler than banner;

banner recurved through 50–80°;

keel 7.3–13.8, apex narrowly triangular, acute or subacute, often slightly beaked.

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, usually red- or purple-mottled, becoming stramineous, balloon-shaped, bladdery-inflated, 15–60(–75) × (8–)10–25(–35) mm, apex broad, round, beak obsolete, papery-membranous, translucent, glabrous or strigulose;

stipe 2–9 mm.

12–16.

(13–)15–30(–37).