Flora of North America species comparison

erect or ascending, sparsely strigulose.

erect or ascending, 0.5–2.2 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.

(6–)8–14(–18) cm;

stipules distinct throughout, 3–12 mm, white-papery at proximal nodes;

leaflets 7–15, blades linear, 10–43 mm, apex acute, surfaces strigulose;

terminal leaflet jointed to rachis.

(5–)10–30-flowered;

axis (1.5–)3–19 cm in fruit;

bracts 1–2 mm;

bracteoles 2.

10–25(–30)-flowered, flowers becoming twisted through 180°;

axis 7–12 cm in fruit;

bracts 1.5–2 mm;

bracteoles 1 or 2.

(2–)4–11 cm.

8–15 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–)14–18 mm;

calyx campanulate, (4–)7–9 mm, strigose, tube 3.5–7 mm, lobes lanceolate-subulate, (0.5–)1.2–2.5 mm;

corolla lemon yellow, concolorous;

banner recurved through 80–110°;

keel apex bluntly or sharply deltate.

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.

inverted from flexion of pedicels, ascending to erect, green becoming maroon-mottled, oblong-ellipsoid, moderately laterally compressed, 22–30 × 6–9 mm, glabrous;

stipe 12–16(–19) mm.

12–16.

17–27.