Flora of North America species comparison

erect or decumbent;

branches brownish, yellow-brown, gray-brown, or red-brown, villous or pilose to glabrescent;

branchlets yellow-brown or red-brown, sparsely to densely villous or tomentose to glabrescent.

stipules marcescent, rudimentary or foliaceous on early ones, foliaceous on late ones, usually prominent, linear to lanceolate, 2–17 mm, apex acuminate;

petiole 4–27 mm, pilose adaxially;

largest medial blade oblanceolate or obovate to narrowly elliptic, 43–82 × 12–39 mm, 2.2–4.8 times as long as wide, base cuneate or convex, apex acuminate or convex, abaxial surface very densely to sparsely villous-tomentose or short-silky, hairs straight, wavy, or curved, adaxial long-silky or pilose to glabrescent;

proximal blade margins entire;

juvenile blade densely villous or long-silky.

stipules (marcescent or not), foliaceous or rudimentary on early and late ones;

petiole (usually deeply to shallowly grooved adaxially), 1–27 mm, (much longer than subtended bud);

largest medial blade usually hypostomatous, sometimes hemiamphistomatous or amphistomatous, usually narrowly elliptic, elliptic, usually oblanceolate or obovate, sometimes narrowly oblong or obovate, 27–82 × 6–39 mm, 1.4–4.8 times as long as wide, base usually cuneate or convex, sometimes rounded, rarely subcordate, margins slightly revolute or flat, usually entire, apex acute, acuminate, convex, or rounded, abaxial surface densely villous or villous-silky, tomentose, short- or long-silky, or pilose, hairs usually wavy or straight, sometimes curved, adaxial usually slightly glossy, sometimes dull, moderately densely villous, pilose, or long-silky to glabrescent;

proximal blade margins entire or serrulate;

juvenile blade sparsely or densely villous, tomentose, or long-silky abaxially.

abaxial nectary 0.1–0.6 mm, adaxial nectary narrowly oblong, oblong, or square, 0.6–0.9 mm;

filaments distinct, glabrous.

abaxial nectary 0.1–1 mm, adaxial nectary narrowly oblong, oblong, square, ovate, or flask-shaped, 0.5–1.3 mm, nectaries distinct, or connate and cup-shaped;

filaments distinct or slightly or partly connate, glabrous, or hairy on proximal 1/2;

anthers 0.4–0.8 mm.

adaxial nectary sometimes flask-shaped;

stipe 0.5–2.8 mm;

ovary obclavate or pyriform, densely tomentose, short-silky, or pubescent, beak gradually tapering to styles;

ovules 12–22 per ovary;

styles connate to distinct 1/2 their lengths, 0.3–1.4 mm;

stigmas slenderly to broadly cylindrical, 0.4–0.59–0.8 mm.

abaxial nectary absent, adaxial nectary usually narrowly oblong, oblong, or ovate, sometimes flask-shaped, 0.4–1.8 mm, shorter to longer than stipe;

stipe 0.3–2.8 mm;

ovary pyriform or obclavate, densely villous, tomentose, short-silky, or pubescent, beak usually gradually tapering to styles, sometimes gradually tapering to or slightly bulged below styles;

ovules 6–22 per ovary;

styles connate to distinct 1/2 their lengths or more, 0.3–1.6 mm;

stigmas flat, abaxially non-papillate with rounded tip, or slenderly or broadly cylindrical, 0.2–0.8 mm.

5–9 mm.

4.5–9 mm.

staminate 19–45 × 9–17 mm, flowering branchlet 2–9 mm;

pistillate slender to stout, 24–83 × 8–17 mm, flowering branchlet 3–37 mm;

floral bract tawny, light brown, or bicolor, 1.5–2.5 mm, apex convex to rounded, hairs wavy.

staminate 14–53 × 5–17 mm, flowering branchlet 1–25 mm;

pistillate densely to sometimes loosely flowered, slender, stout, subglobose, or globose, 15–83 × 7–21 mm, flowering branchlet 2–37 mm;

floral bract tawny, brown, bicolor, or greenish, 1–3.4 mm, apex convex or rounded, entire, abaxially hairy, hairs wavy, crinkled, or straight.

= 76, 95, 114.

= 76, 95, 114, 152.