The Ferns of Washington 75 



stem until maturity; cones y%-% in. long, on the tips 

 of the branches. — British Columbia to California. 



2. Selaginella strtjthioloides (Presl.) Underw. (Plate 

 3, Fig. 4). 



Stems 1-6 ft. long, Vfa in. in diameter, pendent, 

 growing with mosses on the trunks of trees, attached by- 

 roots from their stems and branches; stems pinnately 

 much branched, light brown. Leaves narrow, tV in. 

 long, short, white-awned at apex, with occasional cilia 

 on margin, some early losing their awns; leaves on younger 

 branches dark green, loosely spreading; those on old 

 branches light brown, fewer, half appressed; cones or 

 fruiting spikes slender, 4-angled, not abundant. — Near 

 the sea coast. British Columbia to Oregon. 



3. Selaginella rupestris (L.) Spring. (Plate 3, Fig. 5.) 

 Stems prostrate, 4-12 in. long, much branched; 



branches several times forked, usually less than 3 inches 

 high. Leaves in about 8 ranks, closely appressed except 

 at tips, usually less than tV in. long, ending in a slender 



white bristle l^-Vx as long as the leaf itself; leaves 



narrow, with deep groove on back, tapering from base 

 to a rounded apex, margins with numerous cilia. Fertile 

 spikes or cones erect, 4-sided, J^-l in. long; bracts broader 

 at base than leaves, with shorter and sharper terminal 

 awn, margin more ciliate. Megaspores and microspores 

 borne in same leaf-axils. Megaspores bright orange in 

 color. — British Columbia to New England, south to 

 California and Georgia. 



nella runestris densa (Rvdb.) Comb. Nov. 



a. Selaginella rupestris densa (Rydb.) 



(Selaginella densa Rydb.) 



Stems densely tufted, 2-5 in. long; sterile brandies 

 ery short, crowded. Leaves many-ranked. — Washing- 

 on to Montana and Nebraska. 



