Flora of North America species comparison

erect;

branches yellow-green, yellow-brown, or gray-brown, glabrous;

branchlets yellow-brown or red-brown, glabrous;

branches and branchlets sometimes weakly glaucous.

(marcescent but not skeletonized), stipules usually absent or rudimentary, rarely present on late ones;

petiole (convex, or shallowly to deeply grooved, flat), 0.4–4.6(–5.5) mm, (glabrous adaxially);

largest medial blade (2 pairs of secondary veins arising at or close to base, arcing toward apex) broadly elliptic, subcircular, or circular, 1.9–16.3 × 3–10.5 mm, 0.84–1.17(–2.53) times as long as wide, base rounded or convex, margins flat, entire, ciliate, apex retuse, rounded, convex, or acute, abaxial surface glabrous, adaxial highly glossy, glabrous;

proximal blade margins entire;

juvenile blade glabrous or puberulent.

stipules foliaceous, (prominent), apex rounded or acute;

petiole convex to flat, or shallowly grooved adaxially, 6–16 mm, velvety or pilose adaxially;

largest medial blade narrowly oblong, elliptic, or broadly elliptic, 54–100 × 18–35 mm, 1.8–3.6 times as long as wide, base convex, rounded, subcordate, or cordate, margins flat, serrate or serrulate (teeth sometimes elongate), apex acuminate to acute, abaxial surface not glaucous, glabrous, adaxial dull, glabrous or pilose, midrib hairy;

proximal blade margins entire or serrulate;

juvenile blade reddish or yellowish green, glabrous or sparsely short- or long-silky abaxially, hairs white.

abaxial nectary 0.5–1 mm, adaxial nectary narrowly oblong or oblong, 0.8–1.4 mm, nectaries distinct;

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

anthers ellipsoid or globose, 0.4–0.6 mm.

adaxial nectary narrowly oblong, 0.6–1.1 mm;

filaments distinct or slightly connate, glabrous;

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

abaxial nectary present or absent, adaxial nectary usually narrowly oblong or oblong, sometimes flask-shaped, 0.8–2 mm, longer than stipe;

stipe 0.4–0.8 mm;

ovary pyriform, glabrous or puberulent, (hairs in patches, especially on beak), beak slightly bulged below styles;

ovules 7–17 per ovary;

styles connate or slightly distinct distally, 0.5–1 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly or broadly cylindrical, 0.28–0.6 mm.

adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.3–1.1 mm, shorter than stipe;

stipe 1.4–3.6 mm;

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

ovules 18–22 per ovary;

styles 0.2–0.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, or broadly cylindrical, 0.2–0.23–0.26 mm.

3.8–8.3 mm.

3.6–5.2 mm.

from subterminal buds; staminate subglobose, stout, or indeterminate, 3.3–18.5 × 2.5–12 mm, flowering branchlet 0.5–9 mm; pistillate moderately densely to loosely flowered (2–15 flowers), stout, subglobose, globose, or indeterminate, 4.5–35 × 2–17 mm, flowering branchlet 0.5–22 mm;

floral bract brown, 1.6–2.8 mm, apex rounded or retuse, entire, abaxially sparsely hairy or ciliate, hairs usually wavy, crinkled or curly, rarely straight.

flowering as or just before leaves emerge; staminate stout or slender, 24–43(–52 in fruit) × 6–11 mm, flowering branchlet 1–4 mm; pistillate moderately densely to loosely flowered, stout, 33–73 × 8–16 mm, flowering branchlet 2–12 mm;

floral bract brown, 0.7–1.6 mm, apex rounded, convex, or acute, abaxially hairy throughout or proximally, hairs wavy or curly.