Flora of North America species comparison

and leaf scales present.

and leaf scales present.

connate at base, ± parallel-sided, 5.2–9.1 × 0.1–0.9 mm, 1+-veined.

connate at base, obovate-spatulate to ± round, 4–9 × 1–4 mm, 1+-veined.

bracts persistent.

bracts persistent.

0–0.5 mm in fruit.

0–0.2 mm in fruit.

usually 1 staminate and 1 pistillate in each axil;

styles spreading;

pollen yellow.

solitary;

styles erect;

pollen yellow.

1–1.2 × 1.1–1.3 mm, ± as long as wide;

mericarps black, not swollen, evenly winged throughout, wings straight, 0.05–0.1 mm wide.

1.2–1.8 × 1–1.7 mm, ± as long as wide;

mericarps pale grayish brown, not swollen, winged throughout, wings straight, 0.1–0.5 mm wide.

= 40.

= 10.