Flora of North America species comparison

stipules rudimentary on early ones, foliaceous or rudimentary on late ones;

petiole puberulent, villous, or short-silky adaxially;

largest medial blade (sometimes hypostomatous) linear, 39–96 × 5.3–14 mm, 6.5–31 times as long as wide, abaxial surface glabrous or densely silky-villous to glabrescent, hairs appressed or spreading, straight, adaxial sparsely to very densely long-silky-villous;

juvenile blade densely silky-villous abaxially (hairs relatively long, spreading, appressed).

stipules absent or rudimentary on early ones, foliaceous on late ones;

petiole pubescent adaxially;

largest medial blade lorate, 30–136–143 × 2–8 mm, 10–16–28 times as long as wide, abaxial surface densely silky-villous or pilose, hairs appressed or spreading, straight or wavy, adaxial sparsely long-silky to glabrescent;

juvenile blade very densely long-silky abaxially (hairs usually appressed, sometimes a few spreading).

abaxial nectary 0.5–0.9 mm, adaxial nectary narrowly oblong, square, or ovate, 0.4–1.1 mm;

anthers 0.6–1.1 mm.

abaxial nectary 0.2–0.8 mm, adaxial nectary oblong, 0.3–0.8 mm;

anthers 0.5–1 mm.

adaxial nectary oblong, ovate, or flask-shaped, 0.4–1.3 mm, longer than stipe;

stipe 0–0.2 mm;

ovary pyriform, pilose or villous to glabrescent, beak abruptly tapering to styles;

ovules 12–24 per ovary;

styles (± distinct) 0.2–0.5 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly cylindrical, 0.3–1 mm.

adaxial nectary oblong or ovate, 0.3–0.9 mm shorter than stipe;

stipe 0.2–0.9 mm;

ovary obclavate, usually glabrous, sometimes beak pilose, beak bulged below or abruptly tapering to styles;

ovules 13–30 per ovary;

styles 0–0.2 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.3–0.5 mm.

staminate 7–42 × 4–9 mm, flowering branchlet 2–56 mm;

pistillate densely or moderately densely flowered, slender to stout, 22–43 × 3–11 mm, flowering branchlet 2–55 mm;

floral bract 1.4–2.6 mm, apex acute or convex, entire or erose, abaxially hairy throughout or proximally, hairs wavy, straight, or crinkled.

staminate 13–54 × 2–10 mm, flowering branchlet 1.5–16 mm;

pistillate loosely flowered, slender or stout, 14.5–70 × 4–12 mm, flowering branchlet 2–16 mm;

floral bract 1.2–1.6 mm, apex rounded, entire, abaxially hairy (or glabrate), hairs wavy or straight.

= 38.