Flora of North America species comparison

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

procumbent and spreading, to 100 cm, branched much of length, villosulous and patent-pilose.

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 to narrowly triangular, 2–5 mm;

petiole 5–15 mm, longer than rachis;

leaflet blades elliptic to broadly elliptic, apex obtuse or emarginate, apiculate, surfaces uniformly to densely pubescent or pilose abaxially, sparsely to uniformly pubescent adaxially;

terminal blade 10–35 × 12–18 mm, length 1.2–2 times width.

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

4–14-flowered, flowers not clustered at apex, flowers chasmogamous and cleistogamous, cleistogamous flowers subsessile and clustered in leaf axils, or borne distally on axis.

usually much longer than subtending leaves, sericeous.

longer than subtending leaves, patent-pilose.

0.5–3 mm, appressed-puberulent;

bracteoles shorter than calyx tube.

0.5–2 mm, patent-pilose;

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 6.2–6.8 mm;

calyx 3.5–4 mm, tube 1–1.5 mm;

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

corolla pink to pink-purple;

wings 6.1–6.5 mm;

keel 6 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.

elliptic, sparsely appressed-puberulent or glabrescent;

stipe 0 mm; chasmogamous exserted 1/2+ from calyx, 4.5–5.5 mm, cleistogamous included in calyx.

= 20.

= 20.