Flora of North America species comparison

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

prostrate, decumbent, spreading, or erect, compact to elongate, usually strigulose, sometimes villosulous or villous.

(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.

(0.2–)0.4–2.6 cm;

stipules connate-sheathing, sometimes distinct at distal nodes, 1–12 mm, scarious throughout, or herbaceous becoming papery, or stiff and spiny, apex acuminate, spinulose, or callous-mucronate;

leaflets (3 or)5–9, blades decurrent, continuous with rachis, linear to narrowly elliptic or lanceolate, (1–)3–15(–17) mm, apex spinulose, surfaces usually strigose, rarely glabrous adaxially.

densely or loosely 6–40-flowered;

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

bracts 1.2–5 mm;

bracteoles 0.

1–3-flowered, flowers declined;

axis to 0.5 cm in fruit;

bracts 0.8–3.5 mm;

bracteoles 0.

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.

subobsolete or 0.1–0.6(–3) cm.

0.8–2.2 mm 1.2–3.5 mm in fruit.

0.5–2 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.

(3.9–)4–10 mm;

calyx (2–)2.4–8.3 mm, strigose, tube 1.2–2.8(–3.3) mm, lobes subulate, setaceous, or spinulose, (0.5–)1.4–5 mm;

corolla usually pink-purple or whitish, sometimes pink-, lilac-, or purple-tinged;

banner recurved through 45°;

keel 3–6 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.

declined or spreading, stramineous, straight or slightly curved, ellipsoid to oblong-ellipsoid, lenticular, ovoid, ovoid-lenticular, lanceoloid-ellipsoid, or lanceoloid-acuminate, laterally compressed, 3–10 × (0.6–)1.4–4 mm, papery, strigose;

sessile.

8–16.

2–8.