Flora of North America species comparison

usually erect or ascending, sometimes decumbent, rarely prostrate, usually sparsely strigulose, sometimes pilosulous.

erect to ascending, becoming stout, fistulose, strigulose, sometimes glabrate proximally.

2–9 cm;

stipules connate-sheathing and papery at proximal nodes, connate or distinct and herbaceous or submembranous at distal nodes, usually black or blackish when dry, 1.5–7 mm;

leaflets 11–21, blades narrowly oblong to elliptic, linear, oblanceolate, or obovate, 3–24 mm, apex acute to obtuse, mucronate, or emarginate, surfaces sparsely strigose abaxially, glabrous adaxially.

6–12(–15) cm;

stipules 3–9.5 mm, submembranous becoming papery-scarious, pallid;

leaflets 11–21(or 23), blades narrowly elliptic-oblanceolate to broadly obovate or oblong-obovate, 5–25 mm, apex obtuse to retuse, surfaces proximally glabrous, distally pubescent abaxially, glabrous adaxially.

(1–)3–23-flowered, often paired in leaf axils, flowers ascending;

axis 0.5–11 cm in fruit;

bracts 0.5–2.7 mm;

bracteoles 0–2.

10–27-flowered, flowers spreading-ascending;

axis 3.5–10 cm in fruit;

bracts 2–4.2 mm;

bracteoles 0–2.

narrowly ascending or incurved, 0.2–4 cm.

incurved-ascending, (2.5–)4–10 cm.

0.7–3.2 mm.

0.9–3 mm.

6–9(–11) mm;

calyx 2.6–5.2 mm, strigose, tube 2–2.7 mm, lobes subulate, 0.7–2.5 mm;

corolla usually white to ochroleucous, sometimes pink-purple;

banner recurved through 40°;

keel 4.3–5.7(–6.5) mm.

(17–)20–25(–27) mm;

calyx (7.7–)8.2–10.5 mm, sparsely to densely strigulose, tube (5.3–)5.7–7.8 mm, lobes subulate, 1.8–3.1 mm;

corolla purple, wing tips pale or white;

banner recurved through 40°;

keel (9.6–)11.2–16.4 mm, apex bluntly triangular.

pendulous, green, often brown- or red-mottled, becoming brown or black, straight or curved, ellipsoid to oblong, laterally flattened, 7–16 × 2.5–4.5 mm, papery, usually glabrous, sometimes strigose;

stipe 0.6–6 mm.

firmly attached to receptacle, falling while attached to pedicel, deflexed or declined, green or purplish green becoming stramineous, straight or slightly incurved, narrowly to plumply oblong-ellipsoid, somewhat obcompressed, 20–39 × 7–11 mm, sub-bilocular, thick, fleshy becoming leathery, glabrous or minutely puberulent;

septum 1.3–2.3 mm wide;

stipe 0–0.6 mm.

3–9.

29–52.

= 16, 24.

= 24.