Flora of North America species comparison

stipules foliaceous, apex acute to acuminate;

petiole convex to flat, or shallowly grooved adaxially, 2–6(–9) mm, pilose or villous adaxially;

largest medial blade narrowly to broadly elliptic or narrowly ovate to ovate, 25–92 × 10–45 mm, 1.5–2.6(–3.4) times as long as wide, base convex, cuneate, or rounded, margins slightly revolute or flat, shallowly serrulate or entire, apex acuminate, acute, or convex, abaxial surface glaucous, sparsely pubescent, hairs wavy, adaxial dull to slightly glossy, pilose, sparsely pubescent or glabrous, midrib hairy, (hairs white and ferruginous);

proximal blade margins entire or finely serrulate;

juvenile blade sometimes reddish, sparsely pubescent abaxially, hairs white, sometimes also ferruginous.

stipules (sometimes marcescent), foliaceous, (3–12–35 mm, 1.7–3.6–6.6 times as long as wide, lanceolate or narrowly elliptic, sometimes ovate or oval, base broad, abruptly tapering), apex acuminate or acute;

petiole convex to flat or shallowly grooved adaxially, 2–7.3–27 mm, villous to glabrescent adaxially;

largest medial blade broadly to narrowly elliptic, or obovate, 23–45–100 × 10–22–55 mm, 1.2–2.2–4.2 times as long as wide, base cuneate, convex, or concave, margins slightly revolute or flat, entire or serrulate, apex acute, acuminate, or convex, abaxial surface glaucous, glabrous or pilose, hairs (white, sometimes also ferruginous), curved, adaxial slightly glossy, moderately densely villous or pilose to glabrescent;

proximal blade margins usually entire, sometimes serrulate;

juvenile blade yellowish green, abaxially densely villous or pilose, sometimes glabrous, hairs white, sometimes also ferruginous.

adaxial nectary oblong or square, 0.3–0.7 mm;

filaments distinct or basally connate, glabrous;

anthers purple turning yellow, 0.4–0.6 mm.

adaxial nectary narrowly oblong to oblong, 0.7–1.8 mm;

filaments distinct to connate ca. 1/2 their lengths, glabrous;

anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.5–0.8 mm.

adaxial nectary square or obovate, 0.3–0.6 mm, usually shorter than stipe;

stipe 0.4–1.2 mm;

ovary pyriform, glabrous, beak gradually tapering to styles;

ovules 12–22 per ovary;

styles connate (sometimes distinct 1/2 their lengths), 0.2–0.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, or broadly cylindrical, or 2 plump lobes, 0.2–0.32–0.44 mm.

adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.6–1.4 mm (2+-lobed), longer than stipe;

stipe 0.4–1 mm;

ovary pyriform, beak gradually tapering to styles;

ovules 22–37 per ovary;

styles 1–2.8 mm;

stigmas slenderly cylindrical, 0.32–0.63–0.86 mm.

3.2–8 mm.

4.5–6.8 mm.

flowering as leaves emerge; staminate slender, stout, or subglobose, 14.5–34.5 × 8–12 mm, flowering branchlet 1–7 mm; pistillate moderately densely or loosely flowered, slender or stout, 21–59 × 6–16 mm, flowering branchlet 1.5–9 mm;

floral bract brown or bicolor, 1.2–1.8 mm, apex acute to rounded, abaxially glabrate to hairy, hairs straight to wavy.

flowering before leaves emerge; staminate stout or subglobose, 22–53 × 16–24 mm, flowering branchlet 0 mm; pistillate densely flowered, slender or stout, 25–69(–85 in fruit) × 13–20 mm, flowering branchlet 0–2 mm;

floral bract brown or black, 2.4–3.2 mm, apex acute, rounded, or retuse, abaxially moderately densely hairy, hairs straight.

= 38.

= 38.