Flora of North America species comparison

erect or ascending, usually flexuous and abruptly angled distal to each node, hirsute or hirsutulous.

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

3–10(–11) cm;

stipules lanceolate-attenuate, (1.5–)2.5–8(–9) mm, herbaceous, sometimes papery at proximal nodes;

leaflet blades obovate to elliptic, (3–)5–19 mm, apex acute to obtuse or retuse, surfaces pubescent abaxially, sometimes glabrous adaxially.

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.

10–25-flowered;

axis (1–)2–5 cm in fruit;

bracts (2.5–)4–12 mm;

bracteoles 0–2.

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

axis 4–17 cm in fruit;

bracts 0.6–1.5 mm;

bracteoles 0.

erect, 1.5–5.5 cm.

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

0.5–2.3 mm.

0.5–1.8 mm.

12–15.3 mm;

calyx 9.5–13 mm, hirsute to hirsutulous, tube 7–8.6 mm, lobes subulate to linear-subulate, 2.5–5.5 mm;

corolla bicolored, keel tip maculate.

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.

stramineous, incurved, (20–)25–40 × (4–)5–7(–8) mm, thin becoming papery, glabrous.

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

stipe (1–)1.2–2 mm.

6–10.

= 24.

= 22.