— 30 — 
P. saxatilis (L.) Fr. 
P. sulcata Tayl. ( Parmelia saxatilis sulcata Nyl.) 
Peltigera canina (L.) Hoffm. 
Pertusaria multipuncta (Turn.) Nyl. On trunks of Betula lutea. 
Physic & aquila detonsa T uck. 
Pyxine sorediata (Ach.) Fr. 
Ramalina farinacea (L.) Ach. On rocks. 
Umbilicaria Dillenii Tuck. Prospect Rock. 
U. Muhlenbergii (Ach.) Tuck. Lookout Rock. 
U. pustulata (L.) Hoffm. Prospect Rock. 
Mt. Greylock Lichens 
Alectoria chalybeiformis (L.) S. F. Gray. On rocks at the summit. 
Baeomyces roseus Pers. Wilbur’s Park. 
Biatora granulosa (Ehrh.) Poetsch. 
B. uliginosa (Schrad.) Fr. Determined by Dr. Riddle. 
B. viridescens (Schrad.) Fr. On old balsam stump at the summit with 
Icmadophila. 
Cladonia alpestris (L.) Rabenh. Stony Ledge. 
C. cariosa cribrosa (Wallr.) Wainio. 
C. cristatella Tuck. On rotten coniferous wood at the summit and else- 
where. 
C. fimbriata (L.) Hoffm. A variety of this composite species. 
C. furcata (Huds.) Fr. Woods west of Stony Ledge. 
C. furcata racemosa (Hoffm.) Flk. Bellowspipe Trail and in the woods 
west of Stony Ledge. 
C. gracilis (L.) Fr. A variety of this composite species. 
C. ochrochlora ceratodes Flk. On balsams and rotten logs at the summit; 
determined by Mr. Merrill. 
C. papillaria (Ehrh.) Hoffm. Stony Ledge. 
C. squamosa (Scop.) Hoffm. On rotten logs at the summit; a variety of 
this composite species. 
C. sylvatica (L.) Rabenh. Stony Ledge and at the summit. 
C. verticillata Hoffm. 
Ever nia furfur acea Cladonia Tuck. 
Graphis scripta (L.) Ach. On trunks of yellow birch. 
Icmadophila aeruginosa (Scop.) Mass. On old balsam stump at the summit. 
[Baeomyces aeruginosus, (Scop.) DC.] 
Lecanora subfusca (L., Nyl.) Ach. On balsams, yellow birch and mountain ash at 
the summit; determined by Mr. Merrill. 
Lecidea platycarpa Ach. On balsams and rocks at the summit; determined by 
Mr. Merrill and Dr. Riddle. 
Lobaria amplissima (Scop.) Arn. Fine specimens on the trees along the Bel- 
lowspipe Trail. [Sticta amplissima (Scop.) 
Mass.] 
