Flora of North America species comparison

0.5–6 cm;

stipules membranous, stramineous, 7–13 mm, glabrous, margins ciliate;

leaflets (5–)9–13, opposite, blades linear-lanceolate to linear, (4–)5–8.5(–12) mm, usually involute and falcate, apex acute, surfaces greenish, sparsely hirsute.

4–14 cm;

stipules stiff, papery, becoming reddish brown, 12–20 mm, free ends caudate-acuminate, pilose to glabrate abaxially, margins ciliate;

leaflets 11–21, blades ovate to lanceolate, elliptic, or oblong, 4–17 × 2–4 mm, apex acute or obtuse, surfaces pilose on midrib abaxially, pilose or glabrous adaxially.

1–3-flowered, subcapitate.

6–10-flowered, subcapitate, slightly elongate in fruit.

0.5–5 cm, pubescent;

bract ovate to lanceolate, pilose.

erect or ascending, 4–15 cm, spreading-villous;

bract lanceolate, shorter to longer than calyx, villous, margins ciliate.

often purple, sometimes white, 12–15(–19) mm.

yellowish, keel tip not maculate, 13–17 mm.

campanulate, pilose;

tube 5–7 mm, lobes (1–)2–3 mm.

short-cylindric, villous, hairs intermixed black and white;

tube 5–6 mm, lobes 1.5–3.2 mm.

spreading, stipitate, stipe 1.5–3 mm, ovoid-ellipsoid or bladdery-inflated, 15–25(–38) × 10–17(–20) mm, subunilocular, thin-papery, strigose-pilosulous.

erect, sessile or subsessile, ovoid-ellipsoid, 15–21 × 5–7 mm, length less than or equal to 3 times width, partially bilocular, papery, sulcate adaxially, pilose, hairs black and white.

= 96.