Flora of North America species comparison

stipules rudimentary or foliaceous on early ones, foliaceous on late ones, apex acute or rounded;

petiole convex to flat, or shallowly grooved adaxially, 3–27 mm, puberulent, pubescent, tomentose, velvety, or glabrous adaxially;

largest medial blade (sometimes hemiamphistomatous), narrowly oblong, narrowly elliptic, or lanceolate, 28–116 × 10–30 mm, 2.6–3.5–7 times as long as wide, base subcordate, convex, or rounded, margins flat or slightly revolute, serrate, shallowly serrulate or crenulate, apex acuminate to acute, abaxial surface glabrous, pilose, or pubescent, midribs hairy, adaxial dull or slightly glossy, glabrous, pilose, sparsely long-silky, or tomentose, midribs hairy;

proximal blade margins entire or shallowly serrulate;

juvenile blade reddish or yellowish green, glabrous, pilose, or villous abaxially, hairs white.

stipules rudimentary or foliaceous on early ones, foliaceous on late ones, apex convex to acute;

petiole (with spherical glands distally), (3–)4.5–14(–22) mm, tomentose or pilose adaxially;

largest medial blade lorate or lanceolate to narrowly lanceolate, (50–)75–115(–220) × 10–22(–35) mm, 5–10 times as long as wide, base usually convex or cuneate, sometimes rounded to cordate, margins serrate or serrulate, apex acuminate, acute, or caudate, abaxial surface glabrous or sparsely tomentose on midribs, hairs white and/or ferruginous, wavy, adaxial highly glossy, glabrous or pilose, hairs white and/or ferruginous;

proximal blade margins entire or serrulate;

juvenile blade glabrous, or moderately densely tomentose or silky abaxially, hairs white and ferruginous.

adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.8–1 mm;

filaments distinct or connate less than 1/2 their lengths, glabrous;

anthers yellow or purple turning yellow, (ellipsoid), 0.5–0.7 mm.

abaxial nectary 0.3–0.5 mm, adaxial nectary oblong to narrowly oblong, 0.3–0.6 mm, nectaries distinct;

stamens 4–7;

filaments (sometimes connate less than 1/2 their lengths), hairy basally;

anthers 0.4–0.6 mm.

adaxial nectary 0.6–0.8 mm, shorter than stipe;

stipe 0.7–2.4(–2.75) mm;

ovary pyriform or obclavate, glabrous, beak sometimes slightly bulged below styles;

ovules 12–18 per ovary;

styles 0.2–0.6 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.12–0.22–0.32 mm.

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

stipe 1.3–5.3 mm;

ovary pyriform to obclavate, beak slightly bulged below styles;

ovules 12–16 per ovary;

styles (sometimes distinct distally), 0.1–0.2 mm;

stigmas 0.16–0.2–0.28 mm.

5–6 mm.

4–6 mm.

staminate flowering before or just before leaves emerge, pistillate as leaves emerge; staminate slender, stout, or subglobose, 15–44 × 8–14 mm, flowering branchlet 0.5–4 mm; pistillate loosely or moderately densely flowered, slender or stout, 16–74(–115 in fruit) × 7–15 mm, flowering branchlet 0.5–9 mm;

floral bract dark brown or tawny, 0.8–1.6 mm, apex rounded or convex, abaxially hairy throughout or proximally, hairs straight or wavy.

staminate 28–97 × 5–11 mm, flowering branchlet 4–25 mm; pistillate 33–93 × 7–15 mm, flowering branchlet 3–35 mm;

floral bract 1–3 mm, apex acute or rounded, entire or erose, abaxially sparsely hairy, hairs wavy; pistillate bract deciduous after flowering.