CATALOGUE OF CANADIAN PLANTS 28 1 



688. H. fflacounii. Best, Bull. Torr. Bot. Club, Vol. XXVIII., 

 p. 127. 

 H. keteropterum, Can. Cat. Pt. VI., p. 182. 



Hants small, in dense, spreading tufts, yellowish green to 

 golden brown. Stems without central strand, stoloniform, 3 to 5 

 cm. long, irregularly branched ; stems and branches curved at 

 the tips; larger branches (secondary stems) pinnate or bipinnate, 

 often subfasciculate, ascending-erect ; paraphyllia few, ovate or 

 linear-lanceolate, serrate ; stem-leavf-s close, appressed when dry, 

 erect-spreading when moist, subsecund, narrowly costate to the 

 middle, .3 to .4 mm. wide, .5 to .7 mm. long ; from a cordate, 

 subclasping base, ovate, gradually to abruptly acuminate, spread- 

 ing, tips recurved, margins plane, papillate-serrulate ; larger 

 branch-leaves ovate-lanceolate, long-acuminate, serrate, more or 

 less secund ; cells of the basal-central area of stem-leaves sub- 

 linear, .005 to .007 mm. wide, 3 to 5 times long, gradually passing 

 into the quadrate cells of the basal angles and margins and 

 becoming roundish quadrate to rhombic-oblong above, each cell 

 with usually two small papillse on both surfaces near the ends of 

 its long diameter ; apical cells of smaller branch-leaves quadrate, 

 crowned with two papillae. Dioecious; perichetial bracts whitish, 

 inner long, acuminate, flexuous-spreading, serrate ; pedicels 

 smooth, shining, flexuous, about i'5 cm. long ; capsules oblong, 

 gradually tapering to a short neck, horizontal, pachydermous, 

 reddish brown, lightly constricted under the mouth and subpendant 

 when deoperculate ; urn .8 mm. wide, I'S to 2 mm. long ; exothe- 

 cial cells elliptical-oblong; exostomial teeth yellowish brown, 

 strongly lamellate, confluent into a reddish basal band ; endosto- 

 mial band nearly one half the length of the teeth ; segments 

 somewhat open, as long as the teeth ; cilia i to 2, nodose-appen- 

 diculate ; annulus broad, of two rows of cells, deciduous ; oper- 

 culum conic, obliquely rostellate ; spores .009 to .012 ; matures 

 in spring. 



Type specimen collected on damp rocks above the railway 

 bridge at Coldstream, 10 miles from Victoria, Vancouver Island, 

 June 2nd, 1893. This was named P. Vancouveriense by Kindberg. 

 On May i8th, 1887, the same species was collected in the same 

 place and named P. keteropterum^ Bruch. Fine specimens were 

 collected on Protection Island and Mount Benson, near Nanaimo, 

 July, 1893 ; also on Mount Arrowsmith, Vancouver Island, July 



