Flora of North America species comparison

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

erect or ascending, clustered, young branches terete, 60–200 cm, branched distally, densely pubescent 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.

often 2 sizes, distal ones subtending racemes much smaller;

stipules subulate, 3–7 mm;

petiole 20–40 mm, longer than rachis;

leaflet blades elliptic to broadly elliptic or ovate, apex retuse to obtuse or acute, apiculate, surfaces uniformly sericeous abaxially, somewhat sparsely sericeous, at least along midrib, or glabrescent adaxially;

terminal blade 20–60 × 10–35 mm, length 1.5–2 times width.

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

5–15-flowered, axillary or compound and appearing terminal, flowers chasmogamous only.

usually much longer than subtending leaves, sericeous.

longer than subtending leaves.

0.5–3 mm, appressed-puberulent;

bracteoles shorter than calyx tube.

0.8–3 mm;

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.

8–13 mm;

calyx 3–5 mm, tube 1.5–2.4 mm;

lobes 4, subequal or abaxial slightly longer, lateral ovate to narrowly ovate, 1.2–2.5 mm, adaxial connate proximally, apices obtuse or acute, not spine-tipped;

corolla usually pink-purple or magenta, rarely white, banner with darker marks at throat on adaxial surface;

wings 7.3–9.5 mm;

keel 8.6–9.8 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.

body exserted from calyx, broadly elliptic to suborbicular, 5–7 × 4–6 mm, slightly to densely white-appressed-pilose, sometimes glabrescent;

stipe to 0.5 mm.

= 20.

= 22.