( 109 ) 
Andreaea alpestris (Thed.) Schimp. Sheep Camp, Dyea 
Creek. This has leaves very similar to the preceding in size 
and shape, but the leaf cells below are longer, thinner-walled 
and less pitted. It should, perhaps, be regarded as only a 
variety of petrophila, as Braithwait does (512). 
Gymnostomum curvirostrum (Ehrh.) Hedw. Yukon 
River bluff just below Dawson (524). 
Dicranoweisia crispula (Hedw.) Lindb. Common on 
rocks about Lake Lindeman (555). 
Dicranoweisia contermina R. & C. Locality of preceding 
(556). 
Cynodontium Schiste (Wahlb.) Lindb. On earth about 
ledges of rock. The leaves are roughly papillose on both 
faces. Upper leaf-cells irregular, not much elongated, up to 
about .oo8 mm. long. Rough spores up to.o16 mm. Teeth 
either solid or with two or three perforations above (525). 
Cynodontium torguescens (Bruch) Limpr. Lake Linde- 
man, on thin earth over rock. Dawson, on rock. Leaves 
papillose, up to 3 mm. long, twice longer and much narrower- 
pointed than in a/fesirzs. Inner perichaetial leaves longer- 
pointed and less clasping than in graczlescens, foliage leaves 
also narrower above. The perigonium, of two leaves, close 
under the perichaetium or almost at its side (526). 
Cynodontium polycarpum (Ehrh.) Schimp. Common on 
rock on upper Dyea cr., also just over the Coast Range on 
streams flowing into Lake Lindeman. The leaves are dis- 
tinctly serrate above (527). 
Cynodontium strumiferum (Ehrh.) DeNot. Lake Linde- 
man. In crevices of rock (528). 
Oncophorus virens (Sw.) Brid. (Cynodontium virens 
Schimp.) About springs between Lakes Lindeman and 
Bennett. Alar cells sometimes more or less enlarged or in- 
flated (529). 
Oncophorus virens serratus (B. & S.) Limpr. (Cyno- 
dontium virens serratum B. & S.) Onearth along streams 
flowing into Lake Lindeman (792). 
Oncophorus virens nigrescens (Schimp.). (Cynodontium 
