Howe: Lichens from Ontario, Canada. 119 



Order: GYMNOCARPALES. 



Group: RADIATM. 



Family: USNEACE^. 



1. Usnea longissima Ach. Lake Helen, Nipigon. 



2. Usnea harhata (L.) Web. (= U. dasypoga (Ach.) Nyl.). Lake 



Helen, Nipigon. 

 3; Usnea harhata var. stricta (Schaer.) R. H. Howe, Jr. ( = U. dasypoga 

 var. plicata (Hoffm.) Hue.). Little Fluor Island, Edward 

 Island, Fluor Island, — all L. Superior. 



4. Usnea florida (L.) Web. Jackfish Island, L. Superior. 



5. Usnea florida f. hirta (L.) Michx. Thunder Cape Mt.; Nipigon. 



Silver Islet; Porphyry Island, L. Superior. 



6. Usnea cavernosa Tuck. Nipigon: a very curious and interesting 



specimen with cephalodia resembling alectroid apothecia; 

 Porphyry Island, L. Superior; Silver Islet. 



7. Letharia thamnodes (Flot.) Hue. Perry Lake, Thunder Cape; 



Fluor Island, Lake Superior; Current River; Nipigon; Thunder 

 Cape; Porphyry Island, L. Superior. 



8. Ramalina farinacea (L.) Ach. Porphyry Island, L. Superior; 



Nipigon. The variety phalerata Ach. is represented in part. 



9. Ramalina dilacerata (Hoffm.) Wain. Porphyry Island, L. Su- 



perior; Thunder Cape; Silver Islet. 



10. Alectoria juhata var. implexa (Hofifm.)- Fr. Little Fluor Island, 



Porphyry Island, Silver Islet, and Fluor Island, L. Superior; 

 Heron Bay; Stanley; Current River. 



11. Alectoria chalybeiformis (L.) S. F. Gray. Porphyry Island, L. 



Superior. 



Group: STRATOSI-RADIATM. 

 Family: CLADONIACE^. 



12. Stereocaulon pascliale (L.) Ach. Heron Bay; Silver Islet; Fluor 



Island and Porphyry Island, L. Superior; Sleeping Giant l\It., 

 altitude 1,800 ft; Thunder Cape; Alexander Portage, 17 miles 

 north of Nipigon; Nipigon. The variety conglomeratum Fr. is 

 represented in part. 



13. Stereocaulon tomentosiim Fr. Silver Islet and Surprise Lake: 



Thunder Cape. 



14. Stereocaulon coralloides Fr. Nipigon. 



