Flora of North America species comparison

1-25-branched, repent, filiform, mat-forming.

blades orbiculate to oblong, margins entire;

cystoliths elongate, linear.

axillary, 1-flowered.

unisexual, proximal flowers pistillate, the distal staminate;

bracts subtending pistillate flowers developing 3 corky wings covered with fine, hooked hairs in fruit.

tepals 4, distinct, equal;

stamens4;

pistillode obovate.

tepals 4, connate, lacking hooked hairs;

staminodes absent;

stigma filiform, deciduous.

sessile, ovoid, apex acute, tightly enclosed by scarious perianth and surrounded by connivent, winged bracteoles.

=10.