Flora of North America species comparison

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

diffuse or ascending, (0–)1–4 cm underground, gray-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.

sparse, 2.5–9 cm;

stipules distinct throughout, 1.5–4.5 mm, papery-membranous at proximal nodes, herbaceous at distal nodes;

leaflets 9–15, blades linear-lanceolate or -oblanceolate, 5–20(–27) mm, apex rounded to retuse, surfaces strigose;

terminal leaflet usually longer than adjacent pair.

10–25-flowered;

axis (1–)2–5 cm in fruit;

bracts (2.5–)4–12 mm;

bracteoles 0–2.

3–12-flowered, flowers ascending-spreading;

axis 1–6 cm in fruit;

bracts 1–1.5 mm;

bracteoles 0–2.

erect, 1.5–5.5 cm.

incurved-ascending, 3–9 cm.

0.5–2.3 mm.

1–3 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.

11.5–12 mm;

calyx campanulate, 5.5–6.8 mm, strigose, tube 3.5–4.5 mm, lobes subulate or triangular, 2–2.7 mm;

corolla ochroleucous, often tinged or lined with purple;

banner recurved through 90°;

keel 9.2–10.4 mm, apex slightly beaked.

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

spreading or declined, stramineous or brownish with purple spots, straight, broadly and subsymmetrically ellipsoid, ovoid, or obovoid-ellipsoid, terete or somewhat dorsiventrally compressed, bladdery-inflated, 25–40 × 12–20 mm, papery, strigose;

stipe 0.7–1.5 mm.

26–33.

= 24.