Flora of North America species comparison

ascending or sprawling, clustered, 10–50 cm, branched much of length, sericeous or glabrescent.

procumbent or trailing, initially ascending, becoming decumbent with continued growth, clustered, slender, to 100 cm, branched much of length, sericeous or glabrescent.

usually 2 sizes, axillary ones subtending racemes much smaller;

stipules subulate, 2.5–6 mm;

petiole (5–)10–15(–20) mm, longer than rachis;

leaflet blades elliptic to narrowly elliptic, apex obtuse or retuse, apiculate, surfaces sericeous abaxially, glabrous adaxially;

laterals similar to terminal, without oblique base;

terminal blade 10–30(–40) × 8–22 mm (6–10 mm in axillary leaves), length 1.4–2.5 times width.

stipules subulate, 2–3(–4) mm;

petiole 7–10(–15) mm, equaling or longer than rachis;

leaflet blades usually narrowly elliptic to elliptic, rarely obovate, apex obtuse, scarcely or minutely apiculate, surfaces sericeous abaxially, sparsely sericeous or glabrescent adaxially;

laterals similar to terminal;

terminal blade petiolulate or sessile, 10–20(–25) × 5–10 mm, length 1.5–2.5(–3) times width.

slender, 4–7-flowered, flowers not clustered at apex, flowers chasmogamous and cleistogamous.

2–6(–10)-flowered, erect, flowers not clustered at apex, flowers chasmogamous and cleistogamous.

usually much longer than subtending leaves, sericeous.

longer than subtending leaves, filiform, usually sericeous, sometimes glabrescent.

0.5–3 mm, appressed-puberulent;

bracteoles shorter than calyx tube.

0.5–4 mm, appressed-puberulent;

bracteoles shorter than calyx tube.

chasmogamous 6.5–9 mm;

calyx 4–6 mm, appressed-puberulent, tube 1–1.2 mm;

lobes 4, lateral narrowly triangular, 2.5–3 mm, adaxial connate proximally, apices acuminate;

corolla purple;

wings 5.5–6.5 mm;

keel 6–8 mm.

chasmogamous 6–8 mm;

calyx 3–4 mm, appressed-puberulent, tube 1 mm;

lobes 4, lateral narrowly deltate, 2–2.5 mm, adaxial connate proximally;

corolla usually pink-lavender to violet, rarely whitish;

wings 7–7.5 mm;

keel 6.8–7.3 mm.

chasmogamous as long as calyx, ovate to rounded, 5–7 mm, cleistogamous exserted from calyx, calyx 1/5 loment length, rounded, 4–5 mm;

stipe subsessile.

chasmogamous exserted from calyx, calyx 1/2 loment length, rounded to elliptic, 4–7 × 3–4 mm, cleistogamous rare, exserted from calyx, calyx 1/4–1/3 loment length;

stipe 1.5 mm.

= 20.

= 20.