DR. LINDSAY ON THE LICHEN-FLORA OF GREENLAND. 305 



Gen. 11. Dactyli7ia. 



Sp. 36. *arctica, Br. (ClaJonia ; Dufourea.) Always sterile, 

 says Th. Fries (Arct., p. 160). 

 Gen. 12. Cetraria. 



Sp. 37. *aculeata, Ehrh. (Cornicularia), and 

 *var. alpina, Hepp, 360. 



— muricata, Ach. 



* — acanthella, Ach. ; with other forms. 



38. *odontelIa, Ach. 



39. Islandica, L. ; and vars. or forms 



*var. leucomeloides, Linds. 



— platyna, Ach. 



* — crispa, Ach.^ 



* — Delisei, Bori/. 



40. *nivalis, L. 



41. *cucullata, Bell. 



42. juniperina, L. 



var. pinastri, Scop. 



43. saepincola, Ehrh. (on bark of Betula). 

 Gen. 13. Nephroma. 



Sp. 44. *arcticum, L. ; always sterile. 



45. papyraceum, Hffm. (Nephromium, Nyl.) 

 var. sorediata, Sch, 

 Gen. 14. Peltidea. 



Sp. 46. *aphthosa, Ach. 



47. *canina, Hffm. ; various forms. Not mentioned by 



Th. Fries, but cited by Tuckerman (Syn. Lich. 

 N. Engl., p. 29), on authority of Giesecke. 



48. *rufescens, Fr. 



49. scabrosa, Th. Fr.; fruit. 



50. *venosa, L. 

 Gen. 15. Solorina, 



Sp. 51. *crocea, L. 



52. saccata, L., and 



var. limbata, Smrf. 

 Gen. 16. Sticta. 



Sp. 53. scrobiculata, Scop. 

 Gen. 17. Parmelia. 



Sp. 54. *saxatilis, X., and 



*var. omphalodes, L. 



* — panniformis, Ach, 



* — leucochroa, PVallr. 



* — sphaerophoroidea, Linds. 



55. physodes, L., and 



*var. obscurata, Ach. 



56. *encausta, Sm., and 



var. intestiniformis, Vill. 



t In the Edinburgh University Herbarium there are specimens labelled 

 " C. Boryi, Del., Greenland," from Fries ; and " Newfoundland," from Bory, 

 1831. 



36122. U 



