Flora of North America species comparison

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

procumbent and spreading, to 100 cm, branched much of length, villosulous and patent-pilose.

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 to narrowly triangular, 2–5 mm;

petiole 5–15 mm, longer than rachis;

leaflet blades elliptic to broadly elliptic, apex obtuse or emarginate, apiculate, surfaces uniformly to densely pubescent or pilose abaxially, sparsely to uniformly pubescent adaxially;

terminal blade 10–35 × 12–18 mm, length 1.2–2 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.

4–14-flowered, flowers not clustered at apex, flowers chasmogamous and cleistogamous, cleistogamous flowers subsessile and clustered in leaf axils, or borne distally on axis.

longer than subtending leaves.

longer than subtending leaves, patent-pilose.

1–2 mm;

bracteoles longer than calyx tube.

0.5–2 mm, patent-pilose;

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.

chasmogamous 6.2–6.8 mm;

calyx 3.5–4 mm, tube 1–1.5 mm;

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

corolla pink to pink-purple;

wings 6.1–6.5 mm;

keel 6 mm.

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

stipe subsessile.

elliptic, sparsely appressed-puberulent or glabrescent;

stipe 0 mm; chasmogamous exserted 1/2+ from calyx, 4.5–5.5 mm, cleistogamous included in calyx.

= 20.