Flora of North America species comparison

and leaf scales present.

and leaf scales absent.

connate at base, ± linear, tapering strongly from near base or spatulate, 2.5–9 × 0.3–5 mm, 1+-veined.

not connate at base, ± linear, tapering from base, 12 × 0.3–0.5 mm, 1-veined.

bracts caducous, sometimes persistent.

bracts absent.

0–0.2 mm in fruit.

0.5–1 mm in fruit.

usually 1 staminate and 1 pistillate in 1 axil opposed by 1 pistillate;

styles erect or spreading;

pollen yellow.

solitary or 1+ per axil;

styles recurved, ± reflexed;

pollen colorless.

obovoid, usually widest distal to middle, 0.8–1.4 × 0.6–1.4 mm, longer than wide, sometimes as long as wide;

mericarps black, not swollen, not winged, winged only at apex, or winged throughout but widest at apex, wings straight, 0.03–0.1 mm wide.

1.1–1.8 × 1.5–2.5 mm, shorter than wide;

mericarps black, not swollen, winged throughout, wings straight, 0.1–0.3 mm wide.

= 20.