Flora of North America species comparison

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

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

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.

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.

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

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

longer than subtending leaves.

longer than subtending leaves.

1–2 mm;

bracteoles longer than calyx tube.

0.8–3 mm;

bracteoles shorter 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.

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

= 22.