(n8) 



Grimmia cancscens (Timm.)C. M. {Racomitrium canes- 

 cens Brid.) Sheep Camp, Dyea Creek and Lake Linde- 

 man. Specimens sometimes blackish throughout. The 

 alar cells, more or less hyaline and somewhat inflated-hex- 

 agonal, in several rows, seem alwa}'s to distinguish this plant 

 (608). 



Grimmia hypnoidcs (L.) Lindb. (Racomilritem lanugi- 

 nosum Brid.) Lake Lindeman (607). 



Hedwigia albicans (Web.) Lind. (//. ciliata Ehrh.) 

 Common about Dawson in fine fruiting tufts with stems up 

 to 8 cm. long, also collected at Lake Bennett (610). 



Amphidiiim Lapponicnm (Hedw.) Schimp. (Amphori- 

 dium Lapponicnm (Hedw.) Schimp.) Lake Lindeman and 

 Lake Marsh (611). 



Wcissia Drummondii (Hook. & Grev.) Lind. (Ulota 

 Drummondii Brid.) On bark of Alnus at Sheep Camp, 

 Dyea Creek (612). 



Wcissia Bruchii (Hornsch.) Lindb. {Ulota Bruchii 

 Hornsch.) On rock at Sheep Camp and Lake Lindeman 



(613). 



Wcissia ulophylla intermedia (Schimp.) Braithw. {Ulota 



crispa intermedia (Schimp.) Dixon.) Sheep Camp. On 

 Popuhis and Alnus (614). 



Wcissia phyllantha (Brid.) Lindb. {Ulota phyllantha 

 Brid.) Skagway, Alaska. On rock just above tide-water. 

 The plants are stout and dark colored, bearing dense clusters 

 of gemmae on both sides of the costa near apex (615). 



Orlhotrichum anoniahim Hedw. Dawson. In fine fruit 

 June 29, on rock. Also collected at Skagway (616). 



Orihotrichum Macounii Aust. Dawson. On rock. I 

 refer specimens to this species with a seta about twice the 

 length of the cylindrical capsule, which is at first smooth but 

 may finally become ribbed throughout, with teeth regular and 

 often united to apex and stout cilia (of a double row of cells) 

 often nearly as long as the teeth. The characters pointed 

 out by Austin as separating this species from Kingianum are 

 not apparently very constant (617). 



