Flora of North America species comparison

stipules absent, rudimentary, or foliaceous on early ones, foliaceous on late ones (apex acuminate);

petiole 1.5–8 mm, glabrous adaxially;

largest medial blade lorate, narrowly oblong, narrowly elliptic, narrowly oblanceolate, or linear, 30–133 × 5–20 mm, 3.4–8–15 times as long as wide, base cuneate or convex, margins flat, spinulose-serrulate or entire, apex acute, acuminate, or convex, abaxial surface glaucous or not, pilose, villous, or long-silky to glabrescent, hairs appressed or spreading, wavy, adaxial slightly glossy, villous to glabrescent;

proximal blade margins entire or serrulate;

juvenile blade reddish or yellowish green, densely villous abaxially.

stipules rudimentary or absent;

petiole shallowly grooved adaxially, 3–11 mm, pubescent, or velvety to glabrescent adaxially;

largest medial blade lorate or very narrowly elliptic, 38–110 × 6–19 mm, 5–9 times as long as wide, base cuneate or convex, margins flat to slightly revolute, entire, serrate, serrulate, or spinulose-serrate, apex acute to acuminate, abaxial surface glaucous, densely long-silky to glabrescent, hairs (white, sometimes also ferruginous), adaxial dull or slightly glossy, glabrous or sparsely pubescent, (hairs white, sometimes also ferruginous);

proximal blade margins sometimes serrulate;

juvenile blade moderately densely long-silky abaxially, hairs white, sometimes also ferruginous.

abaxial nectary 0.3–0.9 mm, adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.4–1.2 mm, nectaries distinct;

filaments densely hairy on proximal 1/2;

anthers 0.55–0.7–0.9 mm.

adaxial nectary square, ovate, or oblong, 0.3–0.7 mm;

filaments distinct, hairy basally;

anthers purple turning yellow, ellipsoid or globose, 0.4–0.6 mm.

adaxial nectary ovate, oblong, or flask-shaped, 0.4–1.1 mm, longer than stipe, nectaries distinct or connate and cup-shaped;

stipe 0–0.7 mm;

ovary obclavate or pyriform, glabrous, beak abruptly tapering to styles;

ovules 13–22 per ovary;

styles 0–0.14–0.5 mm;

stigmas slenderly cylindrical or 2 plump lobes, 0.2–0.5 mm.

adaxial nectary oblong to ovate, 0.3–0.9 mm;

stipe 1.5–4 mm;

ovary pyriform, beak abruptly tapering to styles;

ovules 6–12 per ovary;

styles 0–0.5 mm;

stigmas slenderly to broadly cylindrical, 0.26–0.4–0.8 mm.

4–5 mm.

5–9 mm.

staminate 18–48 × 5–13 mm, flowering branchlet 3–15 mm; pistillate moderately densely flowered, slender or stout, 22–58 × 4–9 mm, flowering branchlet 4–12 mm;

floral bract (sometimes brown), 1.3–2.8 mm, apex rounded (sometimes truncate), entire or erose, abaxially hairy mainly proximally, hairs wavy.

flowering as leaves emerge; staminate stout to globose, 12–29 × 6–17 mm, flowering branchlet 0.8–3 mm; pistillate loosely flowered, stout to globose, 12–39 × 6–18 mm, flowering branchlet 1–11 mm;

floral bract brown, tawny, light rose, or bicolor, 1–2 mm, apex rounded, abaxially sparsely hairy, hairs straight.

= 38.