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-oblanceolate to spatulate, 1.5–3.9 × 0.8–1.4(–1.5) mm, 2+-veined.

bracts persistent.

bracts absent.

0–0.5 mm in fruit.

0.4–0.6 mm in fruit.

usually 1 staminate and 1 pistillate in each axil;

styles spreading;

pollen yellow.

usually solitary or 1 staminate and 1 pistillate opposed by 1 pistillate;

styles deflexed;

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.

(0.5–)0.6–0.7(–0.8) × (0.5–)0.8–1 mm, shorter than wide;

mericarps black, not swollen, winged only at apex, wings straight, 0.01–0.03 mm wide.

= 40.

= 10.