Flora of North America species comparison

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

ascending to erect, flexuous, diffusely interbranched, 6–16 cm underground, proximalmost epigeous internodes the shortest, clumps to 1+ m wide, 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.

1.5–6.5 cm, unifoliolate throughout or distally, terminal leaflet slightly expanded and confluent with filiform rachis;

stipules distinct throughout, 1–5 mm, membranous becoming papery at proximal nodes, herbaceous at distal nodes;

leaflets (1 or)3–9, blades linear-oblong to linear-elliptic or linear, 2–11 mm, apex acute, surfaces strigose;

terminal leaflet decurrent distally, not jointed to rachis.

10–25-flowered;

axis (1–)2–5 cm in fruit;

bracts (2.5–)4–12 mm;

bracteoles 0–2.

3–17-flowered, flowers ascending;

axis 5–40(–42) cm in fruit;

bracts 0.5–1.1 mm;

bracteoles 0.

erect, 1.5–5.5 cm.

incurved-ascending, 6–19 cm.

0.5–2.3 mm.

1.5–5.5 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.

8–10.5 mm;

calyx campanulate, 2.5–4.6 mm, strigose, tube 1.5–3.7 mm, lobes triangular, 0.5–1.9 mm;

corolla pink-purple;

banner recurved through 50°;

keel 7.4 mm, apex obtuse to subacute, not beaklike.

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

pendulous, stramineous, straight or decurved, narrowly ellipsoid, dorsiventrally or laterally compressed or subterete, 17–28 × 3.8 mm, papery, strigose or glabrous;

stipe 2.5–5 mm.

10–12.

= 24.