Vol. xiv. No. 4— Botanical Gazette— Apr., 1889 



New mosses of North America. II 



F. RENAULD AND J. CARDOT. 1 



(with plates xii-xiv.) 



Microbryum Flcerkeanum Sch. var. Henrici. — Differs 

 from the typical form in the green color of the plant and the 

 excurrent costa, often hyaline at the point. 



Kansas : Saline county, on sandy ground ( "Joseph Hairy). 



Weisia viridnla Brid. var. nitida. — Characterized by the 

 shorter leaves, and the narrow, subcylindrical capsule, shin- 

 ing as though varnished and distinctly sulcate when dry. 



Florida {Fitzgerald). Louisiana: Station Slidell, on 

 sandy ground (A. B. Langlois). 



Dicranum hyperboreum C. Mull. var. papillosum. — Dif- 

 fers from the type in its leaves shorter, deeply canaliculate, 

 papillose on the back, and the costa strongly rugose. 



Greenland. 



Dicranum sabuletorim. — In compact green or yellow- 

 ish tufts. Stems 2-4 cm. long, simple or dichotomous, cov- 

 ered below with ferruginous tomentum. Leaves erecto-pat- 

 ent or subsecund above when moist, flexuous and somewhat 

 crispate when dry, oblong-lanceolate, long narrowed-acumi- 

 nate, generally somewhat inflexed at margins, subcanalicu- 

 late, smooth or papillose at back, serrulate above, 4-6 mm. 

 Ion g> -75- 1 mm. broad; costa percurrent or excurrent, gen- 

 erally papillose and denticulate at back above, sometimes 

 nearly smooth. Cells of the areolation short, angular, irreg- 

 ular in the upper part, linear, elongated toward the base, the 

 alar large, lax, quadrate or subhexagonal, orange-brown. 

 External pericranial bracts from a broad base suddenly con- 

 stricted into a more or less elongated denticulate point, the 

 inner convolute, sheathing, abruptly subulate from the 

 rounded apex. Pedicel yellowish, 20-25 mm. long. Capsule 



l Provisional diagnoses of most of the following mosses have been issued in Revue 

 xryologique, 1888, no. 5. 



