Flora of North America species comparison

pale green to yellowish;

superficial cortex of 2 layers of enlarged, thin-walled and well differentiated cells.;

stem leaves triangular, triangular-lingulate to lingulate, more than 0.8 mm, appressed, apex obtuse to broadly obtuse, erose to fimbriate;

hyaline cells efibrillose and nonseptate.

leaves narrowly lingulate-triangular, 1.2–1.8 mm, apex acute to apiculate, border not developed much along margins and narrow at base (occupying less than 0.25 the width of the base);

hyaline cells rhombic, mostly 0–1-septate.

straight and often tapering, often 5-ranked, leaves not much elongate at distal end of branches.

usually strongly 5-ranked.

ovate-lanceolate, 1.4–2 mm, straight; slightly undulate and sharply recurved;

margins entire;

hyaline cells on convex surface with 1 pore per cell at cell apex, concave surface with round wall thinnings in the cell ends and angles; chlorophyllous cells triangular in transverse section and well-enclosed on concave surface.

narrowly ovate-lanceolate, 1.2–1.5 mm, concave, straight, apex strongly involute, border entire, hyaline cells on convex surface with 3–9 faintly ringed rounded-elliptic pores along the commissures often quite small apically, largely aporose on concave surface.

dioicous.

dioicous.

22–28 µm;

papillose on both surfaces;

proximal laesura more than 0.5 spore radius.

19–28 µm; coarsely papillose on both surfaces with a distinct ridged border around perimeter of proximal surface;

proximal laesura less than 0.5 spore radius.

fascicles with 2 spreading and 2 pendent branches.;

branch stems green, cortex enlarged with conspicuous retort cells.

fascicles with 2 spreading and 1–2 pendent branches.