Flora of North America species comparison

1–1.5 m, grayish-hairy distally.

0.5–2 m, nearly glabrous to densely tomentose.

blades elliptic, distal lanceolate, 10–35 × 7–21 cm, reduced distally, grayish-hairy, at least when young.

ovate to elliptic, reduced distally, to lanceolate, 15–35 × 8–20 cm, glabrous to densely hairy, especially on abaxial surface.

paniculate, with ascending branches, 20–50 cm, grayish-hairy;

bracts ovate to lanceolate, shorter than flowers.

paniculate, with ascending to spreading or distinctly drooping (particularly in w North America) branches, 30–70 cm, tomentose;

bracts lanceolate, shorter than flowers.

oblong-ovoid, 2–3 cm, densely tomentose.

oblong-ovoid, 2–3 cm, glabrous.

flat, broadly winged, 10–15 mm.

flat, broadly winged, 8–10 mm.

creamy white to yellow, broadly ovate, not clawed, 6–15 mm, margins strongly erose-ciliate or inner shallowly fimbriate;

gland 1, basal, green, V-shaped, elliptic;

ovary densely tomentose;

pedicel 6–15 mm.

deep green to yellowish, lanceolate to oblong-elliptic, narrowed to short, broad claw, 5–12 mm, tomentose adaxially, margins of both whorls or at least inner obviously erose-serrulate;

gland 1, basal, dark green or yellowish green, V-shaped;

ovary glabrous;

pedicel 2–10 mm.

= 32.