Flora of North America species comparison

prostrate to ascending, strigulose.

prostrate or decumbent, 0–7 cm underground, hirsute.

(1.5–)3–14(–14.5) cm;

stipules distinct, 1–5 mm, papery-scarious at proximal nodes, subherbaceous at distal nodes;

leaflets 7–15, blades oblong-oblanceolate, elliptic, oval-oblong, linear-oblong, linear-elliptic, or linear-setaceous, 1.5–16 mm, apex obtuse, retuse, subacute, or emarginate, surfaces strigulose abaxially, strigulose or glabrous adaxially;

terminal leaflet sometimes decurrent distally, jointed to or continuous with rachis.

(1.5–)3–10(–12) cm;

stipules rarely connate at proximal nodes, 2–8.5 mm, mostly thinly herbaceous, sometimes papery at proximal nodes;

leaflets (3–)7–15, blades thin, obovate, broadly oblanceolate, or suborbiculate, (2–)5–22 mm, larger ones pinnately veined, apex cuneate to emarginate, surfaces villous-pilose abaxially, glabrous adaxially.

(2–)5–18-flowered, flowers nodding;

axis (1.5–)3–17 cm in fruit;

bracts (0.8–)1–2.5 mm;

bracteoles usually 0.

densely (5–)8–24-flowered;

axis 1–3(–4) cm in fruit;

bracts (2–)2.5–5 mm;

bracteoles 0.

incurved-ascending, (1.5–)3–16.5 cm.

incurved-ascending, (2–)3–11 cm.

(1.5–)2–6.5 mm.

0.7–2.5 mm.

6.3–13.4 mm;

calyx 3–7.6 mm, strigulose, tube 2.3–5.6 mm, lobes subulate, 0.7–2.6 mm;

corolla whitish or dirty white, sometimes veined, tipped, margined, or suffused with purple, or faintly tinged lavender;

keel 6–10 mm.

8.8–11.2 mm;

calyx 5.5–7.8(–8.2) mm, pilose, tube 2.7–3.7 mm, lobes lanceolate to lanceolate-attenuate, (2.7–)3–4.5(–5) mm;

corolla pale yellow to greenish ochroleucous, fading yellowish, keel immaculate;

banner recurved through 50–80°;

keel 7.2–9.7 mm, apex narrowly deltate, acute or subacute, often beaklike.

pendulous, green, purplish, or mottled, decurved or straight, linear-oblong, linear-oblanceoloid, or narrowly ellipsoid, compressed, ventral suture convex in profile or at least beak declined from body, 10–22 × 2.3–4.3 mm, unilocular or bilocular, thinly fleshy becoming papery or leathery, strigulose;

septum (0 or)0.6–2.7 mm wide;

stipe 0–2 mm, concealed within calyx when present.

ascending or spreading (humistrate), pale yellow green becoming stramineous then brownish, incurved or ± straight, slenderly lunate-ellipsoid or semi-ellipsoid, bluntly 3-sided compressed, (15–)17–25 × (2.8–)3.2–5.2 mm, subunilocular, thinly fleshy becoming stiffly papery, densely hirsute, hairs spreading-ascending, to 1.2–1.8 mm, lustrous white;

gynophore to 0.8 mm.

10–29.

12–18.