Flora of North America species comparison

erect or ascending, 80–200 cm, branched distally, short appressed-pubescent, pilose, or villous.

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

stipules subulate to narrowly triangular, 3–6 mm;

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

leaflet blades ovate-elliptic, obovate, or rounded, apex obtuse or retuse, minutely apiculate, surfaces green, cinereous, or silvery abaxially, sparsely to densely sericeous abaxially, glabrous, sericeous, pilose, or silvery with fine, dense, appressed-silky hairs adaxially;

terminal blade 10–40(–50) × (7–)10–30 mm, length 1.3–1.8 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.

10–40-flowered, axillary from distal leaves or clustered in compound inflorescences, flowers compact to lax, axis and pedicels visible, 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.

longer than subtending leaves.

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

1–2 mm;

bracteoles longer than calyx tube.

1–2 mm;

bracteoles longer than calyx tube.

chasmogamous 7–10 mm;

calyx 7–10 mm, pubescent, tube 1–2 mm;

lobes 5, lateral narrowly triangular, 7–8 mm, apices spinelike;

corolla cream-white or creamy with pink or purple at throat;

wings 6–7 mm;

keel 5–6 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 slightly included in calyx, ovate-oblong, 6–8 × 4–5 mm, cleistogamous slightly included in calyx, oblong, 6 × 4 mm;

stipe subsessile.

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

stipe subsessile.