Flora of North America species comparison

erect or ascending, usually strigulose, rarely glabrous.

prostrate to ascending, 1–7 cm underground, gray-strigulose.

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.

2.5–9 cm;

stipules distinct, 2–8 mm, papery at proximal nodes, firm at distal nodes;

leaflets 7–15, jointed to rachis throughout, blades narrowly linear to linear-oblong, 2–12(–16) mm, apex obtuse to emarginate, surfaces strigulose.

7–35-flowered, flowers ascending;

axis 3–30 cm in fruit;

bracts 1–3 mm;

bracteoles 0–2.

(3–)7–20-flowered, flowers spreading or ± decurved;

axis 2–14 cm in fruit;

flowers declined or nodding;

bracts 0.8–2 mm;

bracteoles usually 0.

strict, 6–25 cm.

ascending or divaricate and incurved, 3.5–9.5 cm, surpassing leaves.

0.8–3.5 mm.

2–6 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.

7.3–8.5 mm;

calyx campanulate, 4–5.9 mm, strigose, tube 3.2–4.5 mm, lobes subulate or triangular-subulate, 0.5–1.4 mm;

corolla ochroleucous, tinged or veined with lilac, or pinkish white;

banner strongly recurved through 100–130°;

keel 7–8 mm, apex bluntly triangular.

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.

declined or pendulous, green or purplish becoming brown-stramineous, straight or gently incurved or decurved, narrowly oblong to ellipsoid, strongly laterally compressed, (18–)22–35 × 3.2–4.6(–5) mm, stiffly papery, strigulose;

subsessile, base contracted into stout, stipelike neck 1–1.5 mm.

14–26.

(16–)20–24.