302 LICHENS OF NOVA SCOTIA—MACKAY. 
19. P. ambigua, Ach. On trees, Pictou. 
20. P. olivacea, Ach. Very common on bark of trees, Pictou. 
Gen. VIII.—Puyscia (D.C) Fr.) Th. tr. 
21. P. stellaris (L.) Nyl. Common on trees and sometimes on 
rocks, Pictou. Also, var. hispida, Fr. On trees and rocks, Pictou. 
22. P. obscura, (Eboh.) Nyl. On trees, North Dalhousie, 
Pictou ; Truro. 
FAM. 3.—UMBILICARICI. 
Gen. [X.—Umpiuicarict (Hoffm.) 
23. U. pustulata, Hoffm. On rocks. Bedford and North 
West Arm, Halifax. 
24. U. Dillenit, Tuck. On rocks, North West Arm, Halifax. 
25. U. erosa,Hoffm. Ona granite boulder, Pictou. 
26. U. Michlenbergii, Ach. On rocks, Bedford, N. W. A., 
Halifax. 
FAM. 4—PELTEGEREI. 
Gen. X.—Sticta (Schreb.) Delis., Fr. 
27. SS. crocata, Ach. Rare. On elm trees in intervale, North 
Dalhousie, Pictou. Very pretty. 
28. 8S. pulmonaria, Ach. Very common, on trees. Pictou. 
29. SS. scrobiculata, Ach. Not uncommon, on trunks of trees, 
Pictou. 
30. 8S. glomerulifera, Delis. Frequent on maple trees, Pictou. 
Gren. XI.—WNephroma, Ach. 
31. N. laevigatwm, Ach. With mosses on damp rocks, N. W. 
Arm, Halifax. 
GEN, XIT.—PEeEtticEra (Willd., Hoffm.) Fee. 
32. P. aphthosa, Ho ffm. Common with mosses on shady 
moist banks in the wood. Pictou. 
33. P. canina, Hoffm. Frequent ; with the preceding. Pic- 
tou and Halifax. 
34. P. polydactyla, Hoffm. Not rare. Found in situations 
similar to those of aphthosa and Conina, Pictou. 
FAM. 5.—PANNARIEI. 
Gen. XIJI.—Pannaria (Del.) Tuck.) 
35. P. hypnorum, Fr. On decaying mosses, North Dalhou- 
sie, Pictou. 
