Flora of North America species comparison

and leaf scales present.

and leaf scales present.

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

connate at base, spatulate-obovate, 1.4–2.3 × 0.4–1.5 mm, 2+-veined.

bracts caducous, sometimes persistent.

bracts absent.

0–0.2 mm in fruit.

0 mm in fruit.

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

styles erect or spreading;

pollen yellow.

not solitary, usually 1 staminate and 1 pistillate in 1 axil opposed by 1 pistillate;

styles erect to reflexed;

pollen yellow.

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.

0.4–0.7 × 0.7–0.9 mm, shorter than wide;

mericarps black, swollen at base, not winged or winged only at apex, wings straight, 0–0.03 mm wide.

= 20.

= 10.