—48- 



TWO NEW VARIETIES OF BRACHYTHECIUH. 



By a. J. Grout. 



Brachythecium rivularelaxum.— Plants very lax, sparingly branched ; 

 leaves distant, more loosely areolate than in the typical form; all but the 

 lowest slenderly acuminate as in B. rutabitlmn but with the alar cells of B. 

 rivulare. In habit this resembles robust forms of Hypnum cordifoliuin. 



Probably this is a good species, but 

 as it has been collected but once and in 

 a sterile condition, it seems best to 

 await a fuller knowledge of the plant 

 before giving it more than varietal 

 i rank. B. rhnilare varies greatly in 

 V habit, but this is the only form with 

 slenderly acuminate leaves that I have 

 ever met with. 



Fig. I. B. rh'ulare /a.r»»! x i; c, 

 Stem leaf of the same x 5 ; b, 

 Stem leaf of B. rizmlare x 5. 



Avalanche Trail, Flathead Co., N. W. 

 Montana, July 29, i8g8. Coll. J. M. 

 Holzinger and J. B. Blake. 



Brachythecium Collinum Holzinckki. 

 ally acuminate than in the 

 typical form, with broader 

 cells; also less serrate pri- 

 mordial utricle very dis- 

 tinct. 



Base of Sperry Glacier, 

 N. W. Montana, July 25, 

 1898. Coll. J. M. Holzinger 

 and J. B. Blake. 



-Lca\es larger and more gradu- 



Types in herbarium of A. 

 J. Grout. 



Fig. 



a, Branch leaves of B . collimnn 



•r. 

 B . col Union x 20. 



Holzingeri x 20: b. Branch leaves of 



CURRENT BRYOLOQICAL LITERATURE. 



Recherches Anatomiques sur les Leucobryacees. 

 By M. Jules Cardot. 



This work is a reprint from the Memoires dela Societe nationale des Sci- 

 ences naturelles et mathematiques de Cherbourg, Tome XXXII, 1900. It 

 comprises 84 pages of printed matter and 19 fine plates The latter represent 

 mostly leaf sections beautifully drawn with camera lucida, and are selected, 

 according to the author, from upward of two thousand drawings made during 



