(io8) 



Sphagnum Girgensohnii Russow. Locality of preceding 



(5o6). 



Sphagnum f us cum (Schimp.) Klinggr. In swamps about 

 Dawson. In fine fruit the latter part of August. Often 

 used in large quantities for filling the spaces between the 

 logs of buildings (501). 



Sphagnum fimbriatum Wils. In swamps about Dawson. 

 Fruiting. Rather rare (502). 



Sphagnum teres squarrosulum (Lesq.) Schp. Canon City, 

 Dyea Creek. On damp mountain side (509). 



Sphagnum squarrosum Pers. Klondike River bottom (513). 



Sphagnum squarrosum subsquarrosum Warns. Swamps 

 about Dawson. Fruiting (508). 



Sphagnum medium Limpr. Abundantly fruiting in swamps 

 and on cold, wet hillsides about Dawson. This species is 

 also largely used in the building of log houses (516). 



Andrcaea petrophila Ehrh. Common about Lake Linde- 

 man. In fine fruit May 17. The plants are quite variable 

 in color and length of stem. The leaves are papillose on 

 both sides but most distinctly so on the back in upper part. 

 The cell walls are very thick, the upper cells measure .008 

 x .008 mm. to .008 x .012 mm., below they are 3-4 times 

 longer than wide (5 2 °)« 



Andreaea petrophila acuminata Schimp. Lake Linde- 

 man. All the specimens examined seemed to be dioicous. 

 The papillae vary greatly on different leaves, often being very 

 prominent on young leaves and scarcely visible on old spec- 

 imens (523). 



Andreaea petrophila parvifolia (Muell.). Sheep camp, 

 Dyea Creek. These specimens are from the original locality 

 of parvifolia and agree with a bit of the original collection 

 from Herb. Mueller. They differ from petrophila in having 

 rather smaller leaves and mostly dioicous flowers, the $ 

 plants being more branching than the 9 and bearing three or 

 four antheridial buds ; paroicous plants occur, however, and 

 there seems to be no reason for considering it other than a 

 variety as above given (519)- 



