Flora of North America species comparison

and herbage strigulose, hairs basifixed or obscurely malpighian.

and herbage strigulose, hairs malpighian.

(0.7–)1–2.5 cm;

stipules dimorphic, those at proximal nodes connate into short, bidentate sheath, those at distal nodes longer, connate at base only, lanceolate or lanceolate-acuminate, often without spines, 2–7 mm;

leaflets 5 or 7, blades 7–12 mm, surfaces pubescent abaxially, glabrous or glabrescent adaxially.

(0.8–)1–2.6 cm;

stipules dimorphic, those at proximal nodes connate with bidentate tip, those at distal nodes connate near base with spiny tips, 1–12 mm;

leaflets (3 or)5 or 7, blades (2–)5–15(–17) mm, surfaces usually pubescent, sometimes glabrous adaxially.

subobsolete to 0.2 cm.

0.1–0.6 cm.

4–5.5 mm;

calyx 3.4–4 mm, tube 1.9–2.4 mm, lobes subulate to setaceous, 1.4–2 mm;

corolla whitish.

4.8–6.2 mm;

calyx 3.4–4.4 mm, tube 1.8–2.3 mm, lobes subulate, spinulose, 1.5–2.4 mm;

corolla usually whitish or faintly veined or tinged purple, fading ochroleucous, rarely pink-purple.

subsymmetrically ovoid-lenticular, (3.5–)4–7 × 2.4–3.8 mm.

narrowly ovoid-acuminate, (3.5–)4–7 × 1.5–2 mm.

2 or 3(or 4).

2–4.

= 24.

= 24.