Flora of North America species comparison

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

erect or ascending, clustered, 80–200 cm, copiously branched distally, striate, densely ascending or appressed white-pubescent on ridges.

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, 4–8 mm;

petiole 5–10 mm, longer than rachis;

leaflet blades narrowly obovate or narrowly obdeltate, apex obtuse to rounded, truncate, or retuse, apiculate, surfaces densely white-appressed-strigose abaxially, sparsely appressed-puberulent or glabrescent adaxially, scarcely reticulate-veined between principle lateral veins abaxially;

terminal blade 7–32 × 2–8 mm, length 3–5 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.

2–4-flowered, closely flowered, flowers chasmogamous and cleistogamous, chasmogamous with 2–4 flowers, cleistogamous usually with (1 or)2 flowers at base of peduncle, racemes shorter than to 1–4 times length of subtending leaves.

longer than subtending leaves.

shorter than subtending leaves, scarcely pedunculate.

1–2 mm;

bracteoles longer than calyx tube.

1.5–2 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.

chasmogamous 6.5–8 mm;

calyx 3–4.5 mm, tube 1 mm;

lobes 4, lateral triangular, 2–3.5 mm, deeply 4-lobed, adaxial pair proximally connate most or part of their length;

corolla white to pale yellow and pale purplish striate, or with blotch at throat adaxially, wing and keel petals white;

wings 6–7 mm;

keel 6–7.5 mm; cleistogamous flowers 2 mm, calyx lobes usually 1-veined, rarely with 1 distinct midrib and 2 inconspicuous lateral veins.

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

stipe subsessile.

sparsely appressed-pubescent or glabrescent;

stipe 0.5 mm; chasmogamous, deciduous, distinctly exserted from calyx, elliptic-oblong or broadly elliptic, 3.5–5 × 2–3 mm, cleistogamous suborbicular, 3 × 2 mm.

= 20.