146 
CUMMINGS 
Additional Alaska species: Cetraria delisei submedia Nyl., Port 
Clarence; C. crispa (Ach.), Port Clarence; C. nigricans Nyl., Port 
Clarence and St. Lawrence Island; Platysnia tilesii Ach., Port Clar¬ 
ence; and P. sccpincola forma minuta Nyl., Port Clarence — all re¬ 
corded by Nylander only; Platysma septentrionale Nyl., listed by 
Nylander from Port Clarence and by Rothrock from Kotzebue Sound; 
C. glauca substraminea Babington, reported by Babington from 
Kotzebue Sound. Dr. Bean collected two species, C. juniperina (L.) 
Ach., sterile specimens, on Chamisso Island in Eschscholtz Bay, and 
C. aleurites (Ach.) Th. Fr. at Cook Inlet and, on the bark of coni- 
ferae, at Eschscholtz Bay. Concerning the latter species Rothrock 1 
writes : “ Stein has said of this species that it is an evident transition, 
resembling Cetraria in its fruit and spermagonia, and Parmelia in 
habit, and hence often placed by later lichenologists in the latter genus.” 
J. M. Macoun collected C. actdeata (Schreb.) Fr. on St. Paul Island 
and Nylander reports its occurrence at Port Clarence. Dr. Hayes 
added one species to the list, C. glauca stenophylla Tuck., collected 
at Prince William Sound. Tuckerman reports two additional species, 
C. ramulosa (Hook.) Tuck., a common alpine and arctic form, and C. 
chrysantha Tuck. The range of the latter species is very interesting. 
It was collected by Wright on the islands in Bering Strait, and is repre¬ 
sented by a specimen in the Babington Herbarium collected on rocks 
at Kotzebue Sound; the only other locality given is Japan, where 
fertile specimens were collected by Wright. 
RAMALINA. 
KEY TO THE SPECIES. 
Thallus rather elongated, finely divided.... pusilla geniculata. 
Tliallus short, compressed, coarsely divided. polymorpha. 
215. Ramalina polymorpha Ach. 
Ramalina polymorpha Acharius, L. U. 600. 1810. 
Unalaska (Setchell) ; St. Paul Island (Trelease, 1192). Sterile. 
An alpine and arctic species. Previously reported from the islands in 
Bering Strait, collected by Wright, and from St. Paul Island by Macoun 
and Dr. Bean. Rothrock’s determination of Dr. Bean’s specimen is 
revised by Nylander, who makes it R. polymorpha emplecta . 
1 Rothrock, Dr. J. T. List of and Notes upon the Lichens collected by Dr. T. 
H. Bean in Alaska and the Adjacent Regions in 1S80. Proceedings of the United 
States National Museum, 7: 1884. 
