LICHENS OF NOVA SCOTIA—MACKAY. 303 
36. P. triptophyalla, ch. (?) On bark of a maple tree, North 
Dalhousie, Pictou. 
37. P. brunnea (Sw.) Mass. On the ground, Pictou. 
FAM. 6.—COLLEMEI. 
Gen. XIV.—Co.Lieme! (Hoffm.), Fa. Fe. 
38. OC. leptalowm, Tuck. On trees, North Dalhousie, Pictou. 
39. C. flaccidum, Ach. On trees, Pictou. 
40. OC. nigrescens (Huds) Ach. On trees, North Dalhousie, 
Pictou. 
Gen. XV.—Leptocium, Fr. Nyl. 
41. IL. tremelloides, Fr. On trees, North Dalhousie, Pictou ; 
N. W. Arm, Halifax. 
42. L. myochroum (Ehrh.) Scher). var. saturninum (Dicks), 
Tuck. On trees, North Dalhousie, Pictou. 
FAM. 7.—LECANOREI. 
Gen. XVI.—Puacopium (D.C.) Naeg & Kopp. 
43. P.vitellinum. Eboh.) Ach. On granite boulders, Pictou. 
44. P. cerinum, Ach. Ontrees, North Dalhousie, Pictou. 
45. P. awrantiacum (Lightf.) Not uncommon on trunks of 
willows and poplars, North Dalhousie, Pictou ; and on old board 
fences, Pictou. 
Gren. X VII.—Lecanora, Ach. 
46. IL. rubina, Ach. (?) On exposed dead wood, Pictou. 
47. L. pallescens, Fr. On hemlock bark, Pictou. 
48. IL. subfusca, Ach. Very common. On bark of trees 
everwhere. 
49. L. Hageni, Ach. On exposed and weathered bones, shore 
of Pictou Island. On calcareous boulders, Pictou. 
50. L. Pallida, Scher. On bark of maple, North Dalhousie, 
Pictou ; common. 
51. L. varia, Fr. On weathered wood and boulders, Pictou. 
Also, var. polytropa. Fr. 
52. L. albella, Ach. On bark of maple, N. Dalhousie, Pictou. 
53. LL. elatina, Ach. On old bark, Pictou. Also, 
var. ocrophea, Tuck. 
54. L. cinerea, (L.) On granite boulders, Pictou. Also 
var. discreta, Fr. 
