Flora of North America species comparison

to 16 per plant, pale brown, 0.5-1 mm diam., producing proliferations.

yellow to tan, to 15 per plant, 0.3-1 mm diam., producing proliferations.

upright, to 1.6 cm, 5mm diam., commonly 2 leaves per stem.

upright, to 2 cm, 3mm diam., 1 leaf per stem.

stalk 0-1.8cm, to 2.5 times length of trophophore blade.;

trophophore blade erect to spreading, commonly ± folded when alive, green, dull, without pale central band when dried, to 4.3 × 1 cm (rarely 0.4 × 0.3 mm), herbaceous, thick, gradually tapering to base, apex attenuate;

venation complex-reticulate, with numerous parallel narrow areoles, each with 1-several included veinlets.

stalk expanding gradually into blade.;

trophophore blade erect or spreading, usually plane when alive, pale green, dull, mostly oblanceolate to obovate to ovate, widest point in middle, to 10 × 3.5 cm, soft, herbaceous, base tapering gradually, apex rounded;

venation complex-reticulate, with included free veinlets in areoles.

arising near ground level, 1-2.5 times length of trophophore;

sporangial clusters 8-15 × 1-3 mm, with 8-15 pairs of sporangia, apiculum 0.3-1 mm.

arising at ground level, 2.5-4.5 times length of trophophore;

sporangial clusters 20-45 × 1-4 mm, with 10-40 pairs of sporangia, apiculum 1-2 mm.

=960.