Flora of North America species comparison

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

ascending, clustered, 30–100 cm, simple or branched at base, pubescent.

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.

stipules subulate, 3–4 mm;

petiole 5–10 mm, longer than rachis;

leaflet blades narrowly elliptic, apex obtuse to rounded or retuse, apiculate, surfaces appressed-pubescent abaxially, glabrous or sparsely pubescent along midrib adaxially, conspicuously reticulate-veined between principle lateral veins abaxially;

terminal blade 8–30 × 4–16 mm, length 2–3 times width.

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

4–13-flowered, densely flowered, flowers chasmogamous and cleistogamous, cleistogamous flowers clustered in leaf axils, racemes shorter than to 1–4 times length of subtending leaves.

shorter than or equal to subtending leaves.

shorter than or equal to subtending leaves, subsessile or shortly pedunculate, densely pubescent.

0.5–2 mm;

bracteoles shorter than calyx tube.

1–2 mm;

bracteoles longer 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 7–8 mm;

calyx 4.5–7 mm, tube 1–1.2 mm;

lobes 5, lateral narrowly ovate, 4–6 mm, apices acuminate;

corolla white or yellowish white;

wings 6–6.5 mm;

keel 7–7.3 mm; cleistogamous: calyx 3–4 mm, tube 0.5 mm, lobes narrowly deltate.

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.

body included in calyx, obovate, chasmogamous 3.5–5 × 2.5–3 mm, cleistogamous 3–3.7 × 2–2.5 mm;

stipe subsessile.

= 20.