Flora of North America species comparison

erect;

branches gray-brown, glabrous;

branchlets yellow-brown, glabrous.

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 foliaceous;

petiole 5–9 mm;

largest medial blade narrowly elliptic, 32–58 × 12–19 mm, 2–3.3 times as long as wide, base cuneate or convex, margins slightly revolute, entire, apex acute to acuminate, abaxial surface glabrous, adaxial slightly glossy, glabrous;

proximal blade margins shallowly serrulate;

juvenile blade glabrous.

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 0.3–0.8 mm, adaxial nectary narrowly oblong, 0.6–1 mm, nectaries distinct;

filaments distinct, glabrous;

anthers ellipsoid, shortly cylindrical, or globose, 0.4–0.7 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.

abaxial nectary absent, adaxial nectary narrowly oblong or oblong, 0.5–1.1 mm, equal to or longer than stipe;

stipe 0.4–1.2 mm;

ovary pyriform, usually glabrous, rarely puberulent, beak slightly bulged below styles;

ovules 12 per ovary;

styles 0.6–0.8 mm;

stigmas flat, abaxially not papillate with rounded tip, or broadly cylindrical, 0.3–0.5 mm.

5–7 mm.

4.4–8 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 17.5–42 × 5–13 mm, flowering branchlet 6–7 mm; pistillate moderately densely flowered, stout, 20–40 × 6–12 mm, flowering branchlet 4–7 mm;

floral bract tawny or bicolor, 1.3–2.5 mm, apex rounded, entire, abaxially glabrous.

= 76.