306 LICHENS OF NOVA SCOTIA—MACKAY. 
93. B. Petrea, Fl. Tuck. On granite boulders, Pictou. 
TRIB. III.— Grapidiacei (Eschw., Nyl.) 
FAM. 1L—OPEGRAPHEI. Stitz. 
GENS. XXX.—OpecRAPHA (Humb). Ach. Nyl. 
94. O. varia (pers.), Fr. On the bark of the maple, Pictou. 
XXXI—GraPuHIS. <Ach., Nyl. 
95. G. scripta, Ach. Common; on birch and hemlock bark 
Pictou. 
FAM. 2—ARTHONIEI. Kobr. 
Gen. XXXIJ—ArtuHontia. Ach., Vyl. 
96. A. patellulata, (Nyl.) Rare; on bark of trees, Pictou. 
TRIB. IV. — Caliciacei. 
FAM. 1—SPHAROPHORELI. 
GEN. XXXIII.—SpuH#ropHorvs. Pars. 
97. SS. globiferous (L), D.C. Common, especially on the rough 
bark of the trunks of Abies Canadensis, Pictou and North Dal- 
housie, P. 
FAM. 2—CALICIEI. 
Gen. XXXIV.—Aco.ium (Fee.) DeNot. 
98. A. tigilare (Ach.) DeNot. On weathered wood, fence 
palings, Pictou. 
Gen. XXXV.—Caticium, Pers., Ach., Fr. 
99. OC. lenticulare (Hoffm, Ach.) On weathered wood, North 
Dalhousie, Pictou. Rare. 
Gen. XXX VI.—ContocyBE, Ach. 
100. C. furfuracea (h) Ach. Found growing on the roots of an 
overturned tree in a moist spot in the forest: Carriboo, Pictou. 
TRIB. V.— Verrueariacei (Fr., Fee). Shiz. 
FAM. 1—VERRUCARIEI. 
Gen. XXXVII—Verrucaria (Pers.) Tuck! 
101. V. maura (Wahl), Th., Fr. Sandstone rocks on seashore, 
Cape John, Pictou Co. 
102. V. rupestris, Schrad. Conglomerate rocks, N. Dal., Pictou. 
Co. 
