Flora of North America species comparison

ascending or erect, clustered, slender, 70–150 cm, simple or branched apically, villosulous or strigose.

stipules subulate to narrowly triangular, 3–5 mm;

petiole 7–10 mm, longer than rachis;

leaflet blades elliptic to elliptic-oblong, base obtuse, apex obtuse to retuse, apiculate, surfaces appressed-pubescent or subappressed-pilose abaxially, lateral veins often conspicuous abaxially, sparsely appressed-pubescent adaxially;

laterals similar to terminal;

terminal blade 10–40 × 5–12 mm, length 1.5–2.5(–3) times width.

5–15-flowered, flowers clustered distally, shortly glomerate, flowers chasmogamous and cleistogamous.

shorter than or equal to subtending leaves.

0.5–2 mm;

bracteoles shorter than calyx tube.

chasmogamous 5–6 mm;

calyx 3–4 mm, sericeous or villous, tube 1 mm;

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

corolla purple;

wings 5.7–6.2 mm;

keel 5–5.3 mm.

chasmogamous exserted from calyx, calyx 2/5 loment length, ovate, 4–6 mm, cleistogamous exserted from calyx, ovate, 4–5 mm, sericeous or villous;

stipe 0.2 mm.

= 20.