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 (sometimes marcescent), foliaceous, (resinous, 1.5–7.5 mm), apex acute;

petiole shallowly grooved, or convex to flat adaxially, 4–15 mm, villous or puberulent adaxially, (weakly ventricose around floral buds);

largest medial blade narrowly to broadly elliptic, oblanceolate, or obovate, 35–95 × 10–29 mm, 2.2–4.2(–5) times as long as wide, base usually convex, rounded, or cuneate, sometimes cordate, margins flat, entire, apex acute, convex, or acuminate, abaxial surface not glaucous, moderately to very densely long-silky tomentose to glabrescent, hairs wavy, adaxial slightly glossy, sparsely villous or pubescent to glabrescent;

proximal blade margins entire;

juvenile blade color sometimes obscured by hairs, very densely long-silky abaxially, hairs white.

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.

adaxial nectary narrowly oblong to oblong, 0.4–1.8 mm;

filaments distinct;

anthers yellow or purple turning yellow, ellipsoid or shortly cylindrical, 0.4–0.6 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 narrowly oblong to oblong, 0.6–1.3 mm;

stipe 0.2–0.6 mm;

ovary pyriform, (hairs refractive), beak gradually tapering to styles;

ovules 16–21 per ovary;

styles 0.6–1.8 mm;

stigmas 0.28–0.47–0.64 mm.

5–7 mm.

4.5–6 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.

flowering before leaves emerge; staminate stout or subglobose, 20–57 × 13–18 mm, flowering branchlet 0–2 mm; pistillate densely flowered, slender to stout, 28–92(–105 in fruit) × 12–19 mm, flowering branchlet 0–5 mm;

floral bract brown or black, 2.8–5.2 mm, apex acute to convex, abaxially hairy, hairs straight.

= 76.