306 CARDOT AND THERIOT [34^] 



Canby, 427, 448) ; Hall Island (Trelease, 1989) ; St. Paul Island (U. 

 S. S. Albatross Exped.). 



Hylocomium triquetrum beringianum var. nov. 



Colore lutescente foliisque erecto-imbricatis, subhomomallis, minus 

 papillosis distinctum. 



From Hall Island (Trelease, 1989 in part; Coville and Kearney, 

 2059). 



Hylocomium rugosum De Not. Epil., 99. 

 From Skagway (Canby, 483 in part). 



POSTSCRIPT. 



NOTE i . Since the completion of this paper for the press, in March, 

 1901, a very important catalogue of the bryophytes of the Yukon, 

 comprising 24 hepatics, 7 sphagna, and 222 mosses, has been published 

 by Mr. R. S. Williams, in the Bulletin of the New York Botanical 

 Garden. Mr. Williams's list includes a large number of mosses that 

 are here indicated as new to Alaska. The following species, however, 

 to the number of fifty, are not found in Mr. Williams's list : 



Rhabdoweisia fugax, Webera annotina, 



Aongstroemia longipes, Bryum bimum, 



Dicranella grevilleana, B. pallens, 



Dicranum anderssonii, Mnium insigne, 



Hypnum callichroum, M. nudum, 



H. dieckii, Aulacomnium androgynum, 



H. subeugyrium, Oligotrichum integrifolium, 



D. starkei, Fontinalis patula, 



D. albicans, Pterygophyllum lucens?, 



D groenlandicum, Orthothecium intricatum, 



D. neglectum, Pseudoleskea atrovirens, 



D. howelln, P. stenophylla, 



Dicranodontium longirostre, Brachythecium novse-angliae, 



D. aristatum, B. asperrimum, 



Ditrichum homallum, B. plumosum, 



Barbula aciphylla, Eurhynchium stokesii, 



Grimmiamaritima, E. oreganum, 



G. elatior forma?, Rhynchostegium serrulatum, 



Amphoridium mougeotii, Plagiothecium sylvaticum, 



Orthotrichum arcticum, P. roeseanum, 



Tayloria tenuis, P. muehlenbeckii, 



Splachnum luteum, P. elegans, 



Philonotis macounii, Amblystegium serpens, 



P. capillaris, A. varium, 



Meesea tschuctschica, Hylocomium umbratum. 



