Flora of North America species comparison

usually ascending, rarely decumbent, 0–2 cm underground, strigulose to pilose-villosulous.

erect or ascending, 1–9(–17) cm underground, strigulose.

2.5–12 cm;

stipules 1.5–6 mm, papery at proximal nodes, herbaceous or submembranous at distal nodes;

leaflets (5 or)7–17, blades lanceolate to oblong, (3–)5–30(–32) mm, apex obtuse or emarginate, surfaces usually strigulose, sometimes villous-pilosulous, cinereous, glabrate, or glabrous abaxially, glabrous, glabrescent, or sparsely strigose adaxially.

sparse or nearly bladeless and rushlike, 2–11 cm;

stipules connate-sheathing and papery-scarious at proximal nodes, mostly distinct and herbaceous at distal nodes, (1–)2–7 mm;

leaflets 3–13 or distal leaves reduced to rachis (phyllodia), blades linear, linear-filiform, linear-elliptic, or elliptic, 5–30 × 0.5–4 mm, apex acute, surfaces strigulose;

terminal leaflet sometimes decurrent and not jointed to rachis.

(3–)5–25(–33)-flowered;

axis 1–18(–20) cm in fruit, elongating little after flowering, arising distal to middle of stem;

bracts 1–3.5 mm;

bracteoles usually 0.

3–25-flowered, flowers ascending to declined;

axis 2–20(–23) cm in fruit;

bracts 0.5–2.3 mm;

bracteoles 0–2.

incurved-ascending or erect, 3.5–21(–23) cm, usually surpassing subtending leaf, together with racemes usually shorter than stems.

incurved-ascending, 1–14 cm.

0.5–3 mm.

1–8 mm.

(6–)7.2–11.5 mm;

calyx 4–6.8 mm, strigulose, tube 3.2–4.5 mm, lobes subulate, 0.7–2.3 mm;

corolla usually purple, pink-purple, pink, lilac, lavender, or whitish, sometimes whitish with maculate keel;

wing apex obtuse;

keel 5.4–7.9 mm, shorter than wings.

(6.6–)7.6–11.2 mm;

calyx 4–6.3 mm, black-strigose and/or white-strigose, tube 3.4–5.4 mm, lobes triangular-subulate, 0.5–1.4 mm;

corolla ochroleucous, sometimes tinged or veined with purple or pink;

banner abruptly recurved through 90°;

keel (6.2–)6.5–9.4 mm, apex broadly triangular.

pendulous, green or purplish, straight or slightly decurved, ellipsoid, obtusely 3-sided, faces slightly convex, flattened or depressed but not sulcate abaxially, 13–25 × 3.5–5.5 mm, subunilocular or semibilocular, papery-membranous, sparsely strigulose, hairs black or black and white;

valves inflexed as hyaline septum 0.2–2 mm wide;

stipe (0.5–)1.5–6.5 mm.

pendulous to spreading, green, purple, or mottled, becoming stramineous, straight, linear, narrowly oblong, or oblanceoloid, laterally compressed, bicarinate, 13–50(–53) × 2.3–5 mm, papery, strigose;

sessile.

6–11.

11–26.