Flora of North America species comparison

ascending or erect, clustered, slender, 70–150 cm, simple or branched apically, villosulous or strigose.

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

stipules subulate to narrowly triangular, 3–5 mm;

petiole 7–10 mm, longer than rachis;

leaflet blades elliptic to elliptic-oblong, base obtuse, apex obtuse to retuse, apiculate, surfaces appressed-pubescent or subappressed-pilose abaxially, lateral veins often conspicuous abaxially, sparsely appressed-pubescent adaxially;

laterals similar to terminal;

terminal blade 10–40 × 5–12 mm, length 1.5–2.5(–3) 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.

5–15-flowered, flowers clustered distally, shortly glomerate, 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.

shorter than or equal to subtending leaves.

shorter than subtending leaves, scarcely pedunculate.

0.5–2 mm;

bracteoles shorter than calyx tube.

1.5–2 mm;

bracteoles shorter than calyx tube.

chasmogamous 5–6 mm;

calyx 3–4 mm, sericeous or villous, tube 1 mm;

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

corolla purple;

wings 5.7–6.2 mm;

keel 5–5.3 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 exserted from calyx, calyx 2/5 loment length, ovate, 4–6 mm, cleistogamous exserted from calyx, ovate, 4–5 mm, sericeous or villous;

stipe 0.2 mm.

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.

= 20.