Flora of North America species comparison

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

erect to ascending, 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.

4–10(–13) cm;

stipules connate-sheathing and papery-membranous at proximal nodes, connate or distinct and herbaceous at distal nodes, 0.5–4.5 mm;

leaflets 13–21, blades linear to linear-filiform, (5–)7–15(–17) mm, apex acute to obtuse, surfaces strigulose or adaxially glabrous;

terminal leaflet sometimes 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.

becoming loosely (3–)4–14(–18)-flowered;

axis 1–8.5 cm in fruit;

bracts 0.8–1.5 mm;

bracteoles 0.

erect, 1.5–5.5 cm.

erect or incurved-ascending, 5–15(–22) cm.

0.5–2.3 mm.

ascending, 1.2–3.5 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.

12.5–15.5 mm;

calyx campanulate, obliquely cuneate, 4–6.7 mm, silky-villous, hairs white, sometimes also black, tube 3.2–5.8 mm, lobes triangular, 0.5–1 mm;

corolla white, creamy white, or purplish, banner recurved through 40°;

keel 8–11 mm, apex bluntly deltate or triangular, often slightly beaklike.

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

pale green, sometimes also red-mottled, becoming stramineous, straight or slightly curved, obliquely obovoid, semi-obovoid, or semi-ellipsoid, bladdery-inflated, 20–48 × 5–16(–22) mm, papery-membranous, translucent, apex differentiated into broad, low-deltoid beak, glabrous;

stipe (5–)8–12 mm.

10–20.

= 24.