Flora of North America species comparison

prostrate and radiating, to 15(–20) cm, internodes often concealed by stipules, strigose or strigulose.

prostrate and radiating, internodes to 0.5–2(–2.5) cm, concealed by stipules or developed, villous-villosulous or glabrate.

(2–)4–14 cm;

stipules sometimes connate-sheathing at proximal nodes (vars. humistratus and missouriensis), (2–)3–9 mm, firm or submembranous becoming scarious or papery;

leaflets (5–)11–17(–21), blades elliptic to obovate, 3.5–13(–17) mm, apex acute, apiculate, or obtuse, surfaces strigose to strigulose.

(4–)5–15(–20) cm;

stipules mostly distinct, broadly ovate or triangular, 2.5–12 mm, submembranous;

leaflets 7–31, blades oblanceolate, obovate, or elliptic, 3–17(–20) mm, apex obtuse or emarginate, surfaces villous-villosulous abaxially, sometimes glabrate adaxially.

(3–)4–15-flowered, flowers ascending to spreading;

axis (0.5–)1–4 cm in fruit;

bracts 2.5–8 mm;

bracteoles 0–2.

densely (10–)12–20(–25)-flowered, flowers ascending;

axis (1.5–)2–8 cm in fruit;

bracts 2.5–8.5 mm;

bracteoles 0.

ascending, (1.5–)3.5–11 cm.

incurved-ascending, prostrate in fruit, (1.5–)3–10 cm.

1–3.5 mm.

1.3–3.6 mm.

9.5–22(–24) mm;

calyx purple-tinged, cylindric or deeply campanulate, 5–13(–14.3) mm, strigulose, tube 4.1–10 mm, lobes subulate, (0.7–)1.4–4.5(–5.3) mm;

corolla usually pink-purple, purple, lavender, or violet-red, rarely white;

banner recurved through 45°;

keel 8.9–17.3(–18.5) mm.

17–23.5 mm;

calyx cylindric to deeply campanulate, 10–15 mm, sparsely villous-villosulous, tube (6.8–)7.5–10.5 mm, lobes lanceolate to subulate, 2.5–5.5 mm;

corolla bright reddish violet or tinged with violet, white, or whitish;

banner incurved 40–50°;

keel 12–15.7 mm.

usually persistent, ascending or descending, brownish becoming black, straight or slightly incurved, subsymmetrically or obliquely oblong, oblong-ellipsoid, or ellipsoid, subterete, or dorsiventrally or ± laterally compressed, (11–)14–28(–30) × (4–)5–9(–10) mm, unilocular or subunilocular, distinctly beaked, fleshy becoming stiffly leathery or subligneous, walls much less than 1 mm thick, strigulose, strigose, or glabrous.

ascending (humistrate), brownish then blackish, ± straight, obliquely ovoid, lanceoloid-ellipsoid, oblong-ellipsoid, or lanceoloid, obcompressed, (17–)20–30 × 7–10 mm, subunilocular, fleshy becoming stiffly leathery or subligneous, glabrous;

septum to 1.7 mm wide.

(33–)35–55(or 56).

30–44.

= 22.