LICHENS 
IIS 
The following additional species of the genus Lcptogium have been 
reported from Alaska: L. muscicolum (Sw.) Fr., L. tenuissimum 
(Diks.) Koerb., L. myochroum tomentosum Tuck., collected by 
Wright on the islands in Bering Strait; L. tremelloides (L. fil.) 
Fr., collected by Dr. Cooley at Salmon Creek, near Juneau; L. scoti- 
num Ach. and A. parculum Nyl., reported from Port Clarence by 
Nylander. 
COLLEMA. 
This genus is represented by two specimens, both of which are 
sterile. One was collected by Frederick Funston under no. 21, 
locality not given. The other was collected by Trelease. The latter 
specimen is numbered 1160, but bears no other data. It may possibly 
be referred to C. pulposum. No. 21 is so fragmentary and incomplete 
that no determination can be made. 
Species of Collema recorded for Alaska : C. melcenu?7i polycarpzan 
Schaer., collected by Wright on the islands of Bering Strait; C. 
mclcenmn Ach., C. triptodes Nyl., C. tenax Ach., C. furvum sub- 
hirsutulum Nyl., reported from Port Clarence by Nylander; and C. 
pulposum (Bernh.) Ach., collected by Dr. Bean at Cape Lisburne. 
Nylander records CoIIemopsis Jlotoviana (Hepp) as having been col¬ 
lected at Port Clarence. 
EPHEBE. 
133. Ephebe pubescens Fr. 
Ephebepubescens Fries, S. 0 . V. 356. 1825.—Nyl. Syn. 1 : t. 2.1 and 17- 
20. i860. 
Mountain west of Muir Glacier (Trelease, 974). Sterile. New 
to Alaska. It has been reported from Greenland, but I find no record 
of it for Newfoundland or Labrador. 
Family P ANN ARIACEAI. 
PANNARIA. 
KEY TO THE SPECIES. 
Thallus white, powdery. . lanuginosa. 
Thallus brown or blackening. 
Thallus of rounded branchlets. lepidzota coralliphora. 
Thallus squamulose. 
Thallus yellowish and reddish-brown, apothecia sessile, with a 
broad, thin, light-colored margin. ...hypnorum, 
Thallus darker, apothecia appressed or immersed, margin not so 
conspicuous and of nearly the same color as the disk ...bruntiea. 
