11G American Fern Journal 



polymorphic species: but, on the other hand, it is more 

 thftn likely that several of its reputed synonyms will 

 be found upon careful investigation to represent forms 

 which are specifically distinct. Such a study is urgently 

 needed. 



Pellaea ternifolia (Cav.) Link. Collected from 

 dry rocks, Ramsey Canyon, Huachuca Mountains, 

 Arizona, August 23, 1910, Goodding 766. This also 

 is a highly variable species which, as currently accepted, 

 ranges from Texas to Argentina and occurs also in 

 Santo Domingo and in the Hawaiian Islands. So 

 far as the writer can find it has been known hitherto 

 in the United States only from western Texas. The 

 present specimens, which are unusually large, were 

 distributed under the name Pellaea atropurpurea . 



A New Polystichum from British Columbia 



L. S. HOPKINS, 



In the latter part of last year Dr. J. M. Maeoun sent 

 to the writer for identification a fern which he had col- 

 lected August 2d, on Vancouver Island, British Colum- 

 bia. The fern seems distinct enough to warrant its des- 

 cription as a new species and it is therefore given the 

 specific name Andersoni in honor of Mr. \Y. B. Ander- 

 son, who first directed Dr. Macoun's attention to it. 



Only three fruiting fronds were found, all growing from 

 the same root. 



Polystichum Andersoni sp. nov. 



Stipe short, 2-4 cm. long; stipe and rachis densely 



clothed with pale lanceolate chaff; blade 8-12 cm. wide. 



45 55 cm. long, lanceolate, pinnate, broadesl one-third 

 of the distance from the base, tapering to an acuminate 

 point; pinnae pinnatifid, broadest at the base, tapering. 



