Flora of North America species comparison

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

ascending or pendent, clustered, 50–300 cm, branched throughout, young branches densely covered with appressed to spreading whitish to yellowish hairs.

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.

gradually smaller distally;

stipules subulate to narrowly deltate, 4–8 mm;

petiole 10–50 mm, longer than rachis;

leaflet blades narrowly elliptic to elliptic, ovate, or oblong, apex acute or obtuse, apiculate, surfaces densely appressed-pubescent abaxially, glabrous or sparsely to densely puberulent or pubescent adaxially;

terminal blade 20–90 × 10–50 mm, length 1.5–2.2 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.

5–20-flowered, single or compound and appearing terminal and paniculate, flowers chasmogamous only.

longer than subtending leaves.

longer than subtending leaves.

1–2 mm;

bracteoles longer than calyx tube.

1.5–5 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.

12–16 mm;

calyx 3.5–6 mm, tube 1.6–1.9 mm;

lobes 4, lateral narrowly ovate-triangular, 2.2–3.6 mm, apices acute to shortly acuminate, not spine-tipped;

corolla usually reddish purple, rarely white, banner with darker marks at throat on adaxial surface;

wings 8.5–10.5 mm;

keel 10.5–15 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, elliptic, 5–14 × 4–6 mm, slightly to densely white appressed-pilose, sometimes glabrescent;

stipe 1–2 mm.

= 22.