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, 5.9–11.3 × 0.3–1.1 mm, 1-veined.

bracts caducous, sometimes persistent.

bracts absent.

0–0.2 mm in fruit.

0–0.2 mm in fruit.

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

styles erect or spreading;

pollen yellow.

usually solitary or 1 pistillate and 1 staminate in an axil;

styles reflexed or strongly curved;

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.

0.8–1.2 × 0.9–1.3 mm, as long as or shorter than wide;

mericarps brown or gray-brown, not swollen, winged throughout, wings straight, 0.05–0.1 mm wide, width less than mericarp body.

= 20.