Species of Heterocladic 129 



1-2, nodose ; operculum conic-rostrate, straight or oblique, nearly 

 as long as capsule: spores smooth, .010-012 mm.; matures in 

 summer ; grows on rocks and stones in damp places. 



Type locality, Washington ; type collected by J. A. Allen in 

 Upper Nesqually Valley, Oct. 4, 1898 ; type with mature 

 capsules. 



Idaho (Leiberg); Oregon (Howell); British Columbia (Macoun); 

 Vancouver Island (Macoun). 



Exsiccati : Macoun Can. Muse. 267 and 108 as H. heterop- 

 terum. 



Macoun Can. Muse. 108 as H. Vancouveriense. 



H. heteroptcrioides is apparently confined to the Northwest, rare 

 in fruit and often associated with Hypnum occidentale. The apical 

 cells of the ultimate branch leaves of the closely related H. heter- 

 opterum are hyaline, long oval, with a single papilla at their distal 

 ends. The leaf-cells moreover on both surfaces have one or two, 

 usually two, small, rounded papillae near the ends of their long 

 diameters. As this species can be confidently looked for along 

 the Atlantic coast, from Newfoundland northward, these characters 

 will serve to distinguish it from H. heteroptcrioides. 



6. Heterocladium heteropterioides filescens var. nov. 



In widely spreading tufts, dark green passing yellowish green. 

 Stems prostrate, 8-10 cm. long, or longer, sparingly branched ; 

 stems and branches filiform ; leaves smaller ; papillae as in type ; 

 sterile. 



Type of variety collected by W. B. Wittemeyer in canyon of 

 the Stillaquamish River, Washington, June, 1892. Same range 

 as the type and about as common. 



Exsiccati : Macoun Can. Muse. 688 as H. hetcropterum. 



H. hetcropterum var. flaccidun 



fallax M 



so compact, stems longer and leaf cells with more papillae. 



ft 



Doubtful or Excluded Species 



1. Heterocladium Vancouveriense Kindb. Cat. of Canadian 

 Plants 6 : 183. 1892, is Hypnum occidentale* S. & L., Icon. Muse. 

 Supp. 105. pi. 81. 1874. 



*See also The Hryologist, 4 : 13. 1901 



