Flora of North America species comparison

stipules foliaceous, apex convex to rounded;

petiole shallowly to deeply grooved adaxially, 5–13 mm, with clusters of spherical or foliaceous glands distally, glabrous, pilose, or densely villous adaxially;

largest medial blade usually hypostomatous or hemiamphistomatous, rarely amphistomatous, lorate, very narrowly elliptic, narrowly elliptic, or lanceolate, (24–)55–133 × 11–43 mm, 2.5–6.2 times as long as wide, base convex or cuneate, margins flat, serrulate, apex acuminate to caudate, abaxial surface usually not glaucous (rarely so), glabrous, pilose, or moderately densely villous or long-silky, hairs appressed or spreading, white and/or ferruginous, straight or wavy, (coarse, caducous), adaxial (secondary veins flat or protruding), slightly or highly glossy, glabrous, pilose, or long-silky, hairs white and/or ferruginous;

proximal blade margins entire and glandular-dotted, or serrulate or crenulate;

juvenile blade reddish or yellowish green, glabrous or densely villous or long-silky abaxially, hairs white and ferruginous.

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

petiole 1–6 mm, long-silky adaxially;

largest medial blade (sometimes hypostomatous, glands submarginal), linear, lorate, narrowly elliptic, or narrowly oblanceolate, 40–120 × 7.5–16 mm, 3–8.5 times as long as wide, base cuneate or convex, margins flat, remotely spinulose-serrulate, apex acuminate, acute, or caudate, abaxial surface not glaucous, densely to sparsely long- or short-silky or villous, hairs appressed or spreading, straight or wavy, adaxial dull, sparsely long-silky or villous;

proximal blade margins entire;

juvenile blade yellowish green, very densely long-silky or villous abaxially.

abaxial nectary 0.5–1.1 mm, adaxial nectary square or ovate, 0.3–0.9 mm, nectaries connate and cup-shaped;

stamens 3–6;

filaments distinct, hairy on proximal 1/2 or basally;

anthers ellipsoid, shortly cylindrical, obovoid, or globose, 0.6–0.8 mm.

abaxial nectary 0.4–1 mm, adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.5–1.1 mm, nectaries distinct;

filaments hairy on proximal 1/2;

anthers 0.8–1.2 mm.

adaxial nectary square or ovate, (swollen), 0.2–0.5 mm, shorter than stipe;

stipe 0.5–2 mm;

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

ovules 18–24 per ovary;

styles connate or distinct 1/2 their lengths, 0.5–0.8 mm;

stigmas flat, abaxially non-papillate with rounded tip, broadly cylindrical, or 2 plump lobes, 0.24–0.31–0.42 mm.

adaxial nectary oblong, square, ovate, or flask-shaped, 0.6–1 mm, longer than stipe;

stipe 0.2–0.7 mm;

ovary pyriform, villous or long-silky, beak abruptly tapering to styles;

ovules 24–36 per ovary;

styles 0.1–0.7 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly cylindrical, 0.4–1 mm.

5–7 mm.

4–5.5 mm.

staminate 19–69 × 4–14 mm, flowering branchlet 5–23 mm; pistillate (fruiting in summer), moderately densely to loosely flowered, slender to stout, 23–56(–70 in fruit) × 8–12 mm, flowering branchlet 8–25 mm;

floral bract 1.5–3 mm, apex convex or rounded, entire or toothed, abaxially sparsely hairy throughout or proximally, hairs wavy.

staminate 38–45 × 6–7 mm, flowering branchlet 25–45 mm; pistillate densely flowered, slender, 40–73 × 6–7 mm, flowering branchlet 20–32 mm;

floral bract (sometimes brown), 2.4–3.2 mm, apex acute or rounded, entire or irregularly toothed, abaxially hairy, hairs wavy.

= 76.