Flora of North America species comparison

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

petiole deeply to shallowly grooved adaxially, 5–15 mm, with pairs or clusters of spherical glands distally or throughout, glabrous adaxially;

largest medial blade hypostomatous, narrowly elliptic, elliptic, or lanceolate, 50–135 × 20–50 mm, 2–4 times as long as wide, base convex, margins slightly revolute or flat, serrulate, apex acuminate, abaxial surface pale not glaucous, glabrous, adaxial highly glossy, glabrous;

proximal blade margins entire or serrulate;

juvenile blade reddish, glabrous abaxially.

stipules foliaceous, apex acute, acuminate, or rounded;

petiole convex to flat, or shallowly grooved adaxially, 3–17 mm, pilose, villous, or pubescent adaxially;

largest medial blade (often amphistomatous), lorate, narrowly oblong, or narrowly to broadly elliptic, 26–102 × 8–30 mm, 2.5–3–5.2 times as long as wide, base convex, rounded, or subcordate, margins flat or slightly revolute, (thickened), entire or serrulate, apex acute or acuminate, abaxial surface not glaucous, glabrous, pilose, or moderately densely short-silky, hairs (white, sometimes also ferruginous), wavy, adaxial dull or slightly glossy, glabrous or moderately densely pilose;

proximal blade margins entire, crenate, or serrulate;

juvenile blade green, pilose to densely villous abaxially, hairs white, sometimes also ferruginous.

abaxial nectary 0.6–1.7 mm, adaxial nectary square, ovate, or oblong, 0.5–1.5 mm, nectaries distinct or ± connate and cup-shaped;

stamens 4–10;

filaments distinct, hairy on proximal 1/2;

anthers ellipsoid or globose, 0.5–0.6 mm.

adaxial nectary narrowly oblong, oblong, ovate, or flask-shaped, 0.6–1.5 mm;

filaments distinct or connate ca. 1/2 their lengths, glabrous, hairy on proximal 1/2;

anthers yellow or purple turning yellow, 0.5–0.8 mm.

(abaxial nectary present or absent), adaxial nectary oblong, square, or ovate, 0.4–0.8 mm, (nectaries distinct or connate and shallowly cup-shaped), shorter than or equal to stipe;

stipe 0.5–1.6 mm;

ovary pyriform, beak bulged below or tapering to styles;

ovules 18–22 per ovary;

styles connate or distinct, 0.4–0.6 mm;

stigmas flat, abaxially non-papillate with rounded tip, or slenderly cylindrical, 0.4–0.6 mm.

adaxial nectary oblong, ovate, or flask-shaped, 0.3–0.8 mm, shorter than stipe;

stipe 0.5–2.5 mm;

ovary pyriform, glabrous, beak gradually to abruptly tapering to or slightly bulged below styles;

ovules 10–18 per ovary;

styles 0.3–1.4 mm;

stigmas flat, abaxially non-papillate with rounded tip, or slenderly cylindrical, or 2 plump lobes, 0.2–0.26–0.48 mm.

6–9 mm.

2.5–6 mm.

staminate 27–81 × 9–13 mm, flowering branchlet 9–21 mm; pistillate moderately to densely flowered, slender or stout, 29–68 × 7–15 mm, flowering branchlet 9–42 mm;

floral bract 2–4 mm, apex acute or rounded to truncate, entire or toothed, abaxially sparsely hairy (mainly proximally), hairs wavy or straight.

flowering as or just before leaves emerge; staminate stout or subglobose, 7–37 × 5–12 mm, flowering branchlet 0.5–5.6 mm; pistillate densely or moderately densely flowered, stout, 12–62 × 7–17 mm, flowering branchlet 1–9 mm;

floral bract brown, 0.7–2.1 mm, apex rounded or retuse, abaxially hairy throughout or proximally, hairs straight, wavy, or curly.

= 76.

= 76.