Flora of North America species comparison

decumbent to erect, sparsely strigulose.

erect or ascending, strigulose.

3–10 cm;

stipules distinct, 1–3 mm, papery at proximal nodes, submembranous at distal nodes;

leaflets (11–)15–23, blades oblanceolate to elliptic or narrowly oblong to linear, 3–11 mm, apex obtuse to retuse or emarginate, surfaces glabrous or strigose on midrib abaxially and margins.

5–15(–17) cm;

stipules connate-sheathing and bidentate at proximal nodes, distinct at distal nodes, 2.5–6 mm, scarious;

leaflet blades linear- or linear-oblong, 3–35 mm, apex acute or obtuse and mucronate, surfaces glabrous abaxially, glabrous or glabrate adaxially;

terminal leaflet sometimes decurrent distally, not jointed to rachis.

loosely 5–15-flowered, flowers ascending to declined;

axis 1–5 cm in fruit;

bracts 1–2.2 mm;

bracteoles 0–2.

35–60-flowered;

axis 4–8(–14) cm in fruit;

bracts 3–8 mm;

bracteoles 0–2.

incurved-ascending, 1.5–5 cm.

erect, 9–17(–22) cm.

1–3.4 mm.

2–5 mm.

5–8 mm;

calyx campanulate, 2.9–4.6 mm, strigose, hairs usually black, sometimes also white, tube 1.7–2.3 mm, lobes subulate, 1–2.4 mm;

corolla whitish or ochroleucous;

banner abruptly recurved through 100–110°;

keel 3.9–4.6 mm, apex bluntly deltate, often obscurely beaklike.

14–17 mm;

calyx contracted apically, 10–11 mm, hirsute, hairs long, straight, tube to 14 mm, enclosing fruit, lobes subulate, 2–3 mm;

corolla keel 11.2–13 mm.

deciduous from receptacle, pendulous to spreading, green, sometimes purple-mottled, becoming stramineous, straight, subsymmetrically ovoid-ellipsoid, bladdery-inflated, slightly obcompressed, 15–28 × 9–17 mm, thin becoming papery-membranous, translucent, glabrous;

sessile or on a gynophore about as broad as long.

deciduous within accrescent calyx, straight or slightly incurved, 6–7.5 × 3.5–4 mm, thinly fleshy becoming leathery, glabrous;

gynophore 1 mm.

12–17.

= 24.