Flora of North America species comparison

erect or ascending, sparsely strigulose.

erect or ascending, very sparsely strigulose.

2–15 cm;

stipules 1.5–5 mm, papery-scarious at proximal nodes, subherbaceous at distal nodes;

leaflet blades linear, linear-oblanceolate, or filiform, 5–30 mm, apex acute, subacute, or, often, mucronate, surfaces silvery-canescent, more densely so adaxially;

terminal leaflet sometimes decurrent distally, not jointed to rachis.

sometimes unifoliolate distally, 3–8.5 cm;

stipules shortly connate-sheathing and scarious at proximal nodes, connate or distinct and herbaceous at distal nodes, 2–8 mm;

leaflets (1 or)5–15, blades linear-oblong, oblanceolate, or filiform, 6–40 mm, apex obtuse to acute, surfaces glabrous or sparsely strigulose abaxially, glabrous adaxially;

terminal leaflet decurrent, not jointed to rachis.

(3–)5–25-flowered;

axis 2–20 cm in fruit;

bracts 1.5–4 mm;

bracteoles 2.

12–25-flowered, flowers spreading-declined;

axis 2.5–10 cm in fruit;

bracts 1–3.5 mm;

bracteoles 1 or 2.

erect, 3–25 cm.

erect, (6–)8–14 cm.

0.7–4 mm.

2–6 mm.

14.5–26 mm;

calyx 7.9–13.7 mm, strigulose, tube 6.5–10 mm, lobes lanceolate-subulate, 1.5–4.3 mm;

corolla keel 12.8–18.5 mm.

17–23 mm;

calyx 8.5–12 mm, strigulose, tube 7–10 × 3.5–4.7 mm, lobes triangular-subulate, 0.8–2 mm;

corolla white;

keel 12.3–14.8 mm.

firmly attached to receptacle, falling while still attached to pedicel, stramineous, straight or slightly incurved, obliquely ovoid or plumply oblong, 15–31 × 5–12 mm, fleshy becoming woody, glabrous;

septum (0–)1–2.5(–4) mm wide.

pendulous, green-stramineous, straight or slightly incurved, linear-ellipsoid, strongly laterally compressed, 25–45 × 3–4 mm, fleshy becoming stiffly papery, glabrous;

stipe 2–6.5 mm.

12–17.