Flora of North America species comparison

erect or ascending, usually strigulose, rarely glabrous.

erect or ascending, 1–8 cm underground, often branched proximally, sparsely 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.

2–8 cm;

stipules connate-sheathing and papery-membranous at proximal nodes, connate to 1/2 their length or distinct at distal nodes, 1.5–4.5 mm;

leaflets 7–11, blades linear, linear-oblanceolate, or filiform to narrowly oblong, 6–22 mm, apex obtuse, surfaces strigulose abaxially, glabrous adaxially.

7–35-flowered, flowers ascending;

axis 3–30 cm in fruit;

bracts 1–3 mm;

bracteoles 0–2.

(7–)12–40-flowered, flowers spreading;

axis 4–17 cm in fruit;

bracts 0.6–1.5 mm;

bracteoles 0.

strict, 6–25 cm.

ascending, 3–11 cm, together with racemes usually shorter than stems.

0.8–3.5 mm.

0.5–1.8 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.

6–7 mm;

calyx campanulate, 2.5–3.5 mm, strigulose, tube 1.8–2.5 mm, lobes subulate or deltate, 0.6–1.5 mm;

corolla whitish, banner and keel apex lilac-tinged;

banner recurved through 45–50°;

keel 4.2–5.3 mm.

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.

pendulous, stramineous, ± straight, linear-ellipsoid, obcompressed, 10–15 × 2.3–3.2 mm, papery, glabrous;

stipe (1–)1.2–2 mm.

14–26.

6–10.

= 22.