Flora of North America species comparison

erect or ascending, (0–)1–12+ cm underground, villous.

erect to ascending, with 3–7 well-developed internodes, strigulose-pilosulous.

(2–)3–12 cm;

stipules distinct, subterranean ones often fully amplexicaul but distinct, 7–15 mm, foliose at distal nodes;

leaflets (5–)7–13(–15), blades elliptic, oblong or lanceolate-elliptic, 10–30(–35) mm, pinnately veined, apex obtuse to rounded, surfaces sparsely villosulous or villous abaxially, glabrous adaxially.

7–19 cm;

stipules 3–10 mm, papery-scarious at proximal nodes, subherbaceous at distal nodes;

leaflets (17–)23–35(–39), blades oblong-obovate, elliptic, or nearly oblanceolate, 5–22 mm, apex retuse, obtuse, or subacute, surfaces strigulose-pilosulous abaxially, glabrous adaxially.

appearing subumbellate, loosely 5–11-flowered;

axis 1–5 cm in fruit;

bracts (1.5–)2.5–3.8 mm;

bracteoles 0.

10–30(–35)-flowered, flowers nodding;

axis (3–)6–16 cm in fruit;

bracts 2.5–9 mm;

bracteoles 0–2.

erect, 3–9.8 cm, usually longer than subtending leaf.

erect, (11–)16–30 cm, together with racemes usually longer than stems.

1.5–5 mm.

1.3–6 mm.

13–19 mm;

calyx campanulate to subcylindric, 7.5–8.8 mm, villosulous, tube 6.3–8 mm, lobes broadly triangular, 0.6–0.8 mm;

corolla yellowish with whitish margins, banner sometimes purple bordered white, keel 13.2–16 mm.

15.5–21.5 mm;

calyx short-cylindric, 8.5–12.6 mm, strigulose-pilosulous, tube 5.6–7.5 mm, lobes subulate, 2–5.2(–6) mm;

corolla ochroleucous, white, or creamy white, immaculate;

banner recurved through 45°;

keel 11.5–14.4 mm.

green becoming brown, ± straight, ovoid, inflated, 15–21 × 5.5–8 mm, papery-membranous, black-pilose, hairs to 0.5 mm;

stipe 5–7 mm, pubescent.

erect, stramineous, straight or slightly incurved, narrowly oblong-ellipsoid, obcompressed, grooved dorsally, (15–)17–23 × (4–)4.5–6.3 mm, semibilocular, fleshy becoming leathery, usually strigulose, rarely glabrous;

septum 1–1.6 mm wide;

stipe 0–1.5 mm.

6–10.

(20–)24–31.

= 16.

= 24.