Flora of North America species comparison

few or single, prostrate, 2–10 cm underground, densely strigulose.

erect or ascending, usually strigulose, rarely glabrous.

1–3(–4.5) cm;

stipules connate at proximal nodes, distinct at distal nodes, 1–2.5 mm, scarious at proximal nodes, herbaceous at distal nodes;

leaflets 9–13, blades obovate, cuneate-obovate, or oblanceolate, 3–9(–14) mm, apex obtuse or retuse to obcordate, surfaces ashy-strigose.

distally unifoliolate or reduced to phyllodia, 2–10 cm;

stipules connate-sheathing and papery-scarious at proximal nodes, distinct and herbaceous at distal nodes, 1.5–6.5 mm;

leaflets (0 or 1–)3–13, blades linear-filiform to oblong, 3–30 mm, margins involute, apex obtuse to acute, surfaces strigose abaxially, strigose or glabrous adaxially;

terminal leaflet of compound leaves sometimes decurrent distally, not jointed to rachis.

(4–)6–10(–13)-flowered, flowers spreading;

axis 0.5–1.5(–2) cm in fruit;

bracts 0.6–1.5 mm;

bracteoles 0.

7–35-flowered, flowers ascending;

axis 3–30 cm in fruit;

bracts 1–3 mm;

bracteoles 0–2.

spreading or incurved, (0.3–)0.5–2.2 cm.

strict, 6–25 cm.

1–2 mm.

0.8–3.5 mm.

6.4–8.3 mm;

calyx (2.8–)4.1–5 mm, strigulose, tube 1.9–2.7 mm, lobes subulate, (0.9–)1.5–2.3 mm;

corolla dull stramineous, banner veins lilac, keel tip maculate;

keel 8.8–8.3 mm.

(13–)14–20 mm;

calyx 4.6–8 mm, strigose, tube 4.1–6.4 × (2.6–)3–3.9 mm, lobes subulate, 0.5–2 mm;

corolla pink-purple and wing tips white, or greenish yellow or whitish;

keel (9.5–)10.5–13.5 mm.

spreading or ascending (humistrate), green or purplish becoming stramineous, straight, ovoid or ellipsoid, bladdery-inflated, somewhat dorsiventrally compressed, 20–35 × 12–26 mm, bilocular, thin becoming papery, sparsely strigulose.

erect, green sometimes purple-mottled becoming stramineous, straight or slightly incurved, oblong, slightly compressed laterally, bicarinate, 13–25 × 3.7–9 mm, stiffly leathery to somewhat woody, glabrous or strigose;

sessile.

25–32.

14–26.