Flora of North America species comparison

ascending, decumbent, or sprawling, silky-strigose, villous, or villous-tomentose.

very short or ± absent, forming depressed tufts.

(1–)2–7(–10) cm;

stipules clasping with margins touching but distinct or shortly connate at proximal nodes, distinct at distal nodes, (1–)2–7(–11) mm, often veined, semileathery;

leaflet blades linear, lanceolate, oblong, elliptic, or elliptic-oblanceolate, 3–33(–35) mm, apex acute, subacute, or obtuse, surfaces glabrous, glabrate, or pubescent.

reduced to phyllodia or palmately trifoliolate or odd-pinnate distally, 0.5–8 cm;

stipules mostly connate-sheathing, 3–10 mm, scarious;

leaflets 0(or 3–7), blades narrowly oblanceolate to linear, 3–30 mm, apex spinulose, surfaces strigose;

phyllodia not differentiated into petiole and blade.

densely or loosely 6–40-flowered;

axis 1.5–15 cm in fruit, elongating little after flowering;

bracts 1.2–5 mm;

bracteoles 0.

densely 2–8-flowered;

axis 0.9–3.8 cm in fruit;

bracts 2.5–7 mm;

bracteoles 0–2.

usually erect, rarely humistrate in fruit, (2–)2.5–15 cm, equal to or longer than subtending leaf, together with racemes usually shorter than stems.

erect or incurved-ascending, ascending or decumbent in fruit, 1–9 cm.

0.8–2.2 mm 1.2–3.5 mm in fruit.

0.5–2.5 mm.

7–13.8(–14.5) mm;

calyx 3.7–6.4 mm, villous or strigulose, tube 2.4–5 mm, lobes subulate, (1–)1.1–4 mm;

corolla white to purplish or creamy white;

wing apex bidentate;

keel (6.1–)6.7–9.6 mm, shorter than wings.

12–20 mm;

calyx 5–9.6 mm, strigose, tube 3.1–5.4 mm, lobes subulate, 1.6–4.7 mm;

corolla pink-purple;

banner recurved through 45°;

keel (8.4–)9.4–12.8(–13.4) mm.

green, often with red or purple, becoming stramineous, ± straight or slightly curved abaxially, convex adaxially, not sulcate, obliquely ellipsoid, semi-ellipsoid, or narrowly oblong, laterally compressed, 10–30 × 3–9(–11) mm, papery, translucent, usually glabrous, sometimes strigose, hyaline septum 0–0.6 mm wide;

stipe 2.5–8[–10] mm.

erect, green, usually also red-mottled, becoming stramineous, straight or curved, linear-oblong, laterally compressed, 15–38 × 2–3.5 mm, papery, strigose;

sessile.

8–16.

15–24.