Flora of North America species comparison

erect or ascending, strigulose.

spreading-ascending, forming diffuse clumps, often distinctly flexuous, (0–)1.5–15 cm underground, strigulose.

mostly in sub-basal cluster, (6–)10–30 cm;

stipules connate-sheathing at proximal nodes, mostly connate at distal nodes, 3–10(–11) mm, scarious throughout;

leaflets (9–)13–25(–31), blades linear-oblong, linear-elliptic, lanceolate, or subfiliform, 3–23 mm, apex obtuse, acute, or retuse, surfaces sparsely strigulose abaxially, usually glabrous adaxially;

terminal leaflet sometimes continuous with rachis.

1.5–6.5 cm;

stipules purplish or brownish, connate-sheathing and scarious at proximal nodes, connate or distinct and subherbaceous at distal nodes, 1.5–5 mm;

leaflets (3–)7–15(or 17), blades linear to narrowly oblong, elliptic, or oblanceolate, 3–18 mm, apex acute, obtuse, or retuse, surfaces strigose or glabrous abaxially, glabrous adaxially, margins often ciliate;

terminal leaflet sometimes decurrent distally, not jointed to rachis.

7–20-flowered, flowers ascending to spreading;

axis (3–)4–13(–15) cm in fruit;

bracts 2–4.5 mm;

bracteoles 2.

very loosely 7–35-flowered, flowers ascending;

axis 1 per leaf axil, 3–8 cm in fruit;

bracts 0.5–2 mm;

bracteoles 0–2.

erect, sometimes divergent in fruit, 5–33 cm, together with racemes longer than stems.

erect or incurved-ascending, stiff, 2–14 cm.

1–4.5 mm.

0.8–3 mm.

15–25.5 mm;

calyx campanulate, cylindric, or subcylindric, 7–12 mm, strigulose-pilosulous, tube 4.9–9.2 mm, lobes subulate, 1.3–3(–4) mm;

corolla whitish with keel tip purple, sometimes banner and wings also purple-tipped, sometimes purple throughout;

banner recurved through 30–45°, oblanceolate or broadly rhombic-oblanceolate, 16–25.5 mm, apex emarginate;

keel 11.6–17.5 mm.

5.5–8 mm;

calyx campanulate, 2.5–3.7 mm, black-strigose, tube 1.5–2.6 × 1.2–1.8(–2) mm, lobes triangular-subulate, 0.4–1.4 mm;

corolla pink-purple, white, or white with banner and wing tips purple;

banner recurved through 50°;

keel 3.5–5.4 mm.

stramineous, straight or slightly incurved, oblong-ellipsoid to narrowly oblong-ovoid, obcompressed, 12–25 × 4.3–8 mm, sub-bilocular, fleshy becoming leathery or subligneous, glabrous or strigulose;

septum to 1.4 mm wide;

sessile.

deflexed, greenish and purple-speckled becoming stramineous, straight or slightly curved, ellipsoid to oblong, laterally compressed (2-sided), 9–15 × 3–4.5 mm, papery, glabrous;

stipe 0–1.7 mm.

15–30.

4–8.

= 22.