Flora of North America species comparison

stipules (sometimes marcescent), foliaceous, apex rounded or acute;

petiole shallowly grooved or convex to flat adaxially, 1.5–11 mm, pilose or tomentose adaxially;

largest medial blade (sometimes amphistomatous), narrowly oblong, oblong, elliptic, or broadly elliptic, 10–100 × 5–44 mm, 1.5–3.4 times as long as wide, base convex, rounded, subcordate, or cordate, margins flat or slightly revolute, entire or serrulate, apex acuminate, acute, or convex, abaxial surface not glaucous, moderately densely tomentose, villous, or pilose to glabrescent, hairs wavy or straight, adaxial dull or slightly glossy, pilose or moderately densely villous to glabrescent;

proximal blade margins entire or shallowly serrulate;

juvenile blade yellowish green, sparsely to densely long-silky-tomentose abaxially, hairs white.

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.

adaxial nectary oblong or square, 0.2–0.8 mm;

filaments distinct, glabrous;

anthers yellow or purple turning yellow, 0.4–1 mm.

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 oblong, square, or ovate, 0.3–0.7 mm, shorter than stipe;

stipe 0.3–2 mm;

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

ovules 10–28 per ovary;

styles 0.5–1.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, broadly cylindrical, or 2 plump lobes, 0.16–0.34–0.4 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.

3.5–8 mm.

4–5 mm.

flowering as leaves emerge; staminate stout or subglobose, 15–37 × 8–20 mm, flowering branchlet 2–33 mm; pistillate densely or moderately densely flowered, slender, stout, or subglobose, 17–60 × 7–15 mm, flowering branchlet 3–15(–30) mm;

floral bract tawny, brown, or bicolor, 1–3 mm, apex acute or rounded, abaxially hairy, hairs straight or wavy.

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.

= 38.