Flora of North America species comparison

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

erect or ascending, 50–100(–150) cm, branched throughout or only distally, appressed- or ascending-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.

stipules subulate, 2–4 mm;

petiole 1–3 mm, equaling or longer than rachis;

leaflet blades usually narrowly oblong, rarely elliptic-oblong, with swollen, whitish reticulate veins adaxially, apex apiculate, surfaces densely sericeous abaxially, glabrous adaxially;

laterals without oblique base;

terminal blade 20–45 × 2–7 mm, length 4–8 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.

10–20+-flowered, densely flowered, flowers chasmogamous and cleistogamous, racemes shorter than to 1–4 times length of subtending leaves.

longer than subtending leaves.

longer (1–2 times) than subtending leaves.

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 5.5–7 mm;

calyx 5.5–7 mm, densely pubescent, tube 1.5–2 mm;

lobes 5, lateral narrowly deltate, 4–5 mm, apices spinelike;

corolla white to cream;

wings 5.5–6.5 mm;

keel 5–5.3 mm.

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

stipe subsessile.

chasmogamous included in calyx, rounded, 4–5 mm, cleistogamous similar to chasmogamous, densely strigose;

stipe subsessile.