Flora of North America species comparison

prostrate, silvery-pilose.

erect or ascending, strigulose.

1–4 cm;

stipules 2–8 mm, hyaline, densely pilose abaxially;

leaflets usually 3, rarely 5, blades narrowly to broadly oblanceolate or obovate-cuneate, 3–13 mm, apex subacute, surfaces silvery-pilose.

mostly in sub-basal cluster, (6–)10–30 cm;

stipules connate-sheathing at proximal nodes, mostly connate at distal nodes, 3–10(–11) mm, scarious throughout;

leaflets (9–)13–25(–31), blades linear-oblong, linear-elliptic, lanceolate, or subfiliform, 3–23 mm, apex obtuse, acute, or retuse, surfaces sparsely strigulose abaxially, usually glabrous adaxially;

terminal leaflet sometimes continuous with rachis.

(2 or)3–5-flowered;

axis to 1 cm in fruit;

bracts 1–2.5 mm.

7–20-flowered, flowers ascending to spreading;

axis (3–)4–13(–15) cm in fruit;

bracts 2–4.5 mm;

bracteoles 2.

0.5–2.5 cm.

erect, sometimes divergent in fruit, 5–33 cm, together with racemes longer than stems.

1–3.5 mm.

1–4.5 mm.

5–6.2(–8) mm;

calyx campanulate, 2.4–4.2 mm, densely pilose, tube 2–3 mm, lobes triangular-subulate, 1–1.2 mm;

corolla pink-purple or white, often drying yellowish;

banner recurved through 90°;

keel 4–4.5 mm, apex bluntly deltate.

15–25.5 mm;

calyx campanulate, cylindric, or subcylindric, 7–12 mm, strigulose-pilosulous, tube 4.9–9.2 mm, lobes subulate, 1.3–3(–4) mm;

corolla whitish with keel tip purple, sometimes banner and wings also purple-tipped, sometimes purple throughout;

banner recurved through 30–45°, oblanceolate or broadly rhombic-oblanceolate, 16–25.5 mm, apex emarginate;

keel 11.6–17.5 mm.

ascending or recurved, ovoid-ellipsoid, slightly compressed, 3–4.5 × 2 mm, papery, densely silky-strigose or silky-pilose.

stramineous, straight or slightly incurved, oblong-ellipsoid to narrowly oblong-ovoid, obcompressed, 12–25 × 4.3–8 mm, sub-bilocular, fleshy becoming leathery or subligneous, glabrous or strigulose;

septum to 1.4 mm wide;

sessile.

6–10.

15–30.