Flora of North America species comparison

erect or ascending, fistulose, pilose-tomentulose or white-lanate, rarely white-tomentulose.

ascending or sprawling, sparsely strigulose.

3–13(–15) cm;

stipules connate-sheathing at proximal nodes, connate or distinct at distal nodes, 3–12 mm, papery-membranous becoming scarious; mostly sessile;

leaflets (23–)27–41, blades narrowly oblong to oblong, oblong-elliptic, or linear-lanceolate, (2–)5–30 mm, apex obtuse or emarginate and apiculate, surfaces pilose-tomentulose.

(6–)8–20 cm;

stipules connate-sheathing at proximal nodes, connate or distinct at distal nodes, 10–20 mm, thinly herbaceous or foliaceous becoming papery;

leaflet blades ovate to oblong or broadly elliptic, 10–45(–60) mm, apex obtuse and apiculate, surfaces strigulose abaxially, glabrous adaxially.

many-flowered, flowers declined and retrorsely imbricate in spikelike heads, 20–70(–90) × 18–23 mm;

axis 2.5–8(–9.5) cm in fruit;

bracts (1.2–)1.6–4 mm;

bracteoles 0.

10–20-flowered;

axis (1–)1.5–3.5 cm in fruit;

bracts 2–6 mm;

bracteoles 0.

erect or incurved-ascending, 2–10 cm.

1.5–8 cm.

0.7–1.8 mm.

0.5–3 mm.

7–10 mm;

calyx ovoid-campanulate, 5.4–7.8 mm, villosulous, tube 3.7–5.2 mm, lobes ± subulate, 1.2–3 mm;

corolla greenish white or cream;

keel 7.1–9.1 mm.

11.5–13.5 mm;

calyx 5.2–6.5 mm, glabrate to sparsely strigulose, tube 3.5–4.2 mm, lobes subulate, 1.2–2.9 mm;

corolla keel 9.5–11 mm.

deflexed or declined, green becoming stramineous or brownish, ovoid-lenticular, slightly inflated, somewhat compressed laterally, 6–11 × 3.5–6 mm, thin becoming papery, somewhat lustrous, glabrous or sparsely strigulose;

sessile.

brownish stramineous, (27–)30–37(–40) × 4–5 mm, fleshy becoming leathery, minutely strigulose;

stipe 2–3.5 mm.

(2 or)3–12.

= 16.