LICHENS 73 



Family SPH^EROPHORIACEjE. 

 SPHyEROPHORON. 



KEY TO THE SPECIES. 



Thallus densely crespitose, slightly branched, branches of same size. 



fragile. 

 Thallus more open, freely branched, terminal branches very fine. 



coralloides. 



7. Sphaerophoron coralloides Pers. 



Sphcerophoron coralloides PERSOON in Ust. Ann. i: 23. 1794. 



Alaska (Brewer and Coe, 304) ; Lowe Inlet, British Columbia (Tre- 

 lease, 1277); Sitka (Trelease, 1278); Broughton Strait (Trelease, 

 1267) ; Juneau, 2000 ft. (Trelease, 1273) ; Yakutat (Trelease, 1289) ; 

 Wrangell (Brewer and 006,405) ; Orca (Trelease, 1271) ; Point Gus- 

 tavus, Glacier Bay (Brewer and Coe, 781, 782) ; Hall Island (Trelease, 

 1213, 1282 ; Brewer and Coe, 2060, 2062) ; St. Matthew Island (Tre- 

 lease, 1216) ; St. Lawrence Island (Trelease, 1210, 1275, 1285) ; St. 

 Michael (Setchell) ; Unalaska (Setchell) ; Cape Nome (Setchell). 



Dr. Nylander reports its occurrence on earth and moss on St. Law- 

 rence Island ; Dr. Rothrock credits it to Alaska, with no definite station. 

 Under the synonym S. globiferus (L.) DC., it is reported by J. M. 

 Macoun as growing on rock on St. Paul and St. George Islands. Dr. 

 Grace Cooley collected it at Loring, and also at Salmon Creek, near 

 Juneau, and Dr. Bean at Port Mulgrave and on Little Koniuji Island, 

 of the Shumagin group. It seems to be one of the most widely dis- 

 tributed of the Alaska lichens, the material collected by the members 

 of the Harriman Expedition being obtained on the mainland and on 

 islands near the coast from British Columbia to Cape Nome. 



All the specimens are sterile excepting those from Glacier Bay and 

 St. Michael, which are large and well fruited. Usually the southern 

 forms are more finely divided than those from the northern stations. 

 This species seems to be more abundant and more widely distributed 

 than the following one. 



8. Sphaerophoron fragile (Crantz) Pers. 



Lichen fragilis CRANTZ, Inst. 7. h. i: 78. 1766. 



Sph&rophoron fragile PERSOON, Ust. N.Ann, i : 23. 1794. SOWERBY, Eng. 

 Bot. /. 2474. 



Summit of White Pass, 3000 ft. (Trelease, 1284, 1286) ; St. Mat- 

 thew Island (Trelease, 1283); Port Clarence (Trelease, 1280); St. 

 Michael Island (Setchell) ; Cape Nome (Setchell). 



