Flora of North America species comparison

erect or ascending, strigulose.

rarely more than 15, erect, ascending, prostrate, or decumbent, glabrate, sparsely strigulose, villosulous, or pilose.

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.

1–6.5(–9.5) cm;

stipules (1–)1.5–6(–9) mm, papery at proximal nodes, herbaceous at distal nodes;

leaflets (5 or)7–19(–23), blades linear-elliptic and linear-oblong to obovate, 2–14(–17) mm, apex acute to emarginate, surfaces pubescent abaxially, glabrous or pubescent adaxially.

7–20-flowered, flowers ascending to spreading;

axis (3–)4–13(–15) cm in fruit;

bracts 2–4.5 mm;

bracteoles 2.

(1 or)2–10(–27)-flowered, flowers ascending to declined;

axis 0–2(–)3 cm in fruit;

bracts 0.5–2.5 mm;

bracteoles 0 or 1.

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

erect or incurved-ascending, (0.2–)0.5–9(–10) cm.

1–4.5 mm.

0.4–1.6 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.

3.7–13 mm;

calyx (1.7–)3–5.6(–5.7) mm, strigulose, hirsutulous, or pilose, tube (1–)1.3–3.1 mm, lobes linear-setaceous to narrowly lanceolate, (0.7–)1–3.2 mm;

corolla whitish, lilac, or pink-purple;

banner recurved through 40–45°;

keel 3.7–6.8(–9.3) mm, apex obtusely round to sharply deltate, beaklike or not.

glabrous.

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.

ascending, spreading, or declined, green or purple-tinged becoming stramineous or brownish then black, ± straight or incurved through 0.3–0.5 spiral, linear or linear-oblanceoloid, 3-sided compressed, dehiscent on plant, (7–)10–26 × (1.6–)2.1–3.5 mm, usually bilocular, rarely ± unilocular, thin becoming papery, glabrous, strigulose, or villosulous, hairs straight;

stipe (0–)0.5–0.9 mm.

15–30.

10–22.