138 



Mycologia 



has been recorded on the Atlantic coast from Maine (Eckfeldt) 

 to Greenland (Macoun, Stisenberger) , and at the following inter- 

 mediate stations: Quebec (Macoun), Miquelon island (Stisen- 

 berger), Newfoundland (Eckfeldt, Stisenberger, Arnold), Hud- 

 son bay (Macoun) , Labrador (Arnold, Cummings, Eckfeldt, 

 Macoun, Townsend & Allen) and Baffin's bay (Stisenberger). 

 On the Pacific coast it is reported from British Columbia (Ma- 

 coun) to Alaska (Hue, Rothcock, Cummings, Stisenberger) . In 

 addition to these localities I have seen specimens from Melville 

 island, Ungava and Keewatin. 



Observations : Though this plant appears to be only a smaller, 

 more slender color variety of ochroleuca, yet it has the unique 

 property of conveying after a time a purplish tinge* to the her- 

 barium envelopes, perhaps due to iodinef which is known to occur 

 in some [marine] algae. When only a few filaments of its 

 thallus have been gathered with ochroleuca, they indicate their 

 presence by tinging just beneath them the paper on which they lie. 

 This property offers the best diagnostic characteristic for the 

 ready determination of long preserved^ herbarium material. Its 

 structural differences give sufficient grounds for its recognition as 

 a full species. Alectoria Thulensis Th. Fr. (Lich. Arctoi, 28. 

 i860) which has been recorded from our area is the present 

 species under a synonymous name. 



Specimens Examined 

 Newfoundland: A. C. Waghorne, 1892 (ANS) ; M. A. Curtis 

 (NH) ; (S). Labrador: Blanc Sablon, A. C. Waghorne, 1894 

 (NY, NH) ; Seal harbor,/! C. Waghorne, Aug. 12, 1891 (ANS) ; 

 Blanc Sablon, A. C. Waghorne, July 24, 1893 (CEC) ; Clearwater 

 lake, A. P. Low, July 12, 1896 (CGS). Ungava: Mansfield 

 island, R. Bell, Aug. 30, 1884 (CGS). Greenland: Gischa 

 (TH) ; Christianshaab (NH). Quebec: Shickshock mts., Gaspe, 

 Aug. 26, 1882 (CGS). Franklin: Melville island, E. Parry 



* Arnold : " Das Papier der beiden Umschlagebogen ist dort, wo die Flechte 

 liegt, braun-rothlich gefarbt." Lich. Fragm. Oesterr. bot. Ztschr. 44: 2. 1894, 

 and Crombie : Brit. Lich. 211. 1894. 



t Found in sea water and mineral springs. 



t Ten years or more. 



