Flora of North America species comparison

leaves smaller than branch leaves, triangular-lingulate, with rounded apex, border entire;

hyaline cells efibrillose, non-ornamented, rhomboid, septate; resorbed on convex surface;

concave surface intact except near apex.

dimorphic, spreading branches stiff;

pendent branches slender and delicate.

ovate-lanceolate, apex involute, border entire;

hyaline cells fibrillose and non-ornamented, convex surface with 4–6 small ringed ovate pores (approximately 1/4 the diameter of the cell), concave surface with 0–4 unringed pores per cell; chlorophyllous cells elliptic to truncate-elliptic in transverse section, qually exposed on both surfaces.

monoicous or dioicous.

with few pseudostomata.

15–24 µm; finely papillose on both surfaces;

proximal laesura less than 0.5 the length of the spore.

fascicles with 3(–8) spreading and 3(–8) pendent branches.;

branch stems with distinct solitary retort cells, necks not or slightly rostrate.