14 The Ottawa Naturalist. [April 



strong superficial resemblance to Lophozia Ruiheana, Lindberg- 

 recognized its distinctness and made it the type ot his section 

 Mesoptychia. Schiffner afterwards raised this section to sub- 

 generic rank under Lophozia. The Yukon specimens, however, 

 which are more complete than those originally found, show con- 

 clusively that J. Sahlbergii should be considered the type of a 

 distinct genus, for which Lindberg's appropriate sectional name 

 may be retained. In the following ennumeration the numbers 

 quoted refer to the specimens collected by Professor Macoun. 



Marchantiaceae 



1. AsTERELLA FRAGRANS, (Schleich.) Trevis. 



Hunker Creek (6i). 



2. Prelssia quadrata, (Scop.) Nees. 



Hunker Creek (62). 



3. Marchantia polymorpha, L. 



Dawson (i); West Dawson (Williams). 



Metzgeriaceae. 



4. Riccardia pinguis, (L.) S. F. Gray. 



Dawson (5); Bonanza Creek (85). 



Jungermanniaceae. 



5. Gymnomitrium corallioides, Nees. 



Indian Divide (98). 



6. Nardia scalaris, (Schrad.) S. F. Gray. 



Dawson (Williams). 



7. Arnellia Fennica, (Gottsche) Lindb. Meddel. Soc. F. et Fl. 



Fenn. 14 : 70. 1887. Lindb. & Arnell, Kongl. Sv. Vet. Akad. 

 Handl. 23^ : 35. 1889. 



Jungermannia Fermiciiy Gottsche ; G. & R. Hep. Eur. 418. 1868. 

 Southhya Fennica, Gottsche, /. c. 



Hunker Creek (64 ^./>.); Dawson (Williams), a few frag- 

 ments only, not listed by Howe. A widely distributed species, 

 now known in the Old World from Norway, Sweden, Fin- 

 land, Italy and Siberia. In North America the species has 

 been previously collected by Dus^n in Greenland, and by 



