Flora of North America species comparison

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

ascending and radiating, strigulose.

(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.

4–10 cm;

stipules usually distinct throughout, rarely connate at proximal nodes, 1.5–7 mm, papery at proximal nodes, herbaceous or submembranous at distal nodes;

leaflets (9 or)11–21, blades oblong-obovate, oblanceolate, elliptic, or narrowly oblong-elliptic, (4–)6–21 mm, apex acute, obtuse, or retuse and apiculate, surfaces strigulose abaxially, strigulose or glabrous 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.

10–20-flowered, flowers ascending;

axis (1.5–)3.5–12 cm in fruit;

bracts 1.2–2.5 mm;

bracteoles 2.

ascending, (1.5–)3.5–11 cm.

incurved-ascending, 3–9(–11) cm.

1–3.5 mm.

1–4 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.

7.2–9.4 mm;

calyx campanulate or turbinate-campanulate, (3.6–)4.1–5.7 mm, strigulose, tube 2.4–3.5 mm, lobes lanceolate-subulate, (1.1–)1.6–2.5 mm;

corolla pink-purple or reddish purple;

banner recurved through 50°;

keel 6.2–7.5 mm, apex blunt or subacute, slightly beaklike.

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.

spreading or declined, or humistrate and ascending, pale green or purple-cheeked becoming stramineous, straight or slightly incurved, obliquely ellipsoid or semi-ellipsoid, bladdery-inflated, (20–)25–40(–45) × 10–17 mm, beak prominent, clearly differentiated from body, thin becoming papery, translucent, lustrous, finely strigulose.

(33–)35–55(or 56).

(10–)14–21.

= 22.

= 22.