Flora of North America species comparison

1.5–10 cm, rachis longer than longest leaflet;

leaflets 11–17, well distributed on rachis, blade surfaces long-pilose.

1–10 cm, rachis longer than longest leaflet;

leaflets 11–15, well distributed on rachis, blade surfaces sericeous.

(3–)5–15-flowered.

6–18-flowered.

usually villous, sometimes appressed-pilose.

erect, 2–15 cm, appressed-pilose, ascending-pilose, or villous-hirsute.

15–19 mm.

15–18(–20) mm.

slightly swollen or not accrescent in fruit, ruptured by (but closely investing) base of exserted pod.

becoming swollen, accrescent in fruit, constricted at mouth, enclosing mature legume, 10–14(–18) mm.

usually persisting on plant within calyx until after dehiscence, swollen to inflated, oblong or ovoid, 8–15 × 4.5–6.5 mm.

falling enclosed within calyx prior to dehiscence, ovoid, 6–10 × 4–5 mm.