INDEX TO AMERICAN BOTANICAL LITERATURE 249 
Lorenz, A. New England Lophozias of the Muelleri-group. Bry- 
ologist 14: 25-31. pl. 4, 5. Mr 1911. 
McCormick, F. A. Homothallic conjugation in Rhizopus. Bot. Gaz. 
SEs 290, 240.0. 5.2 95: Me 461i: 
Mackensen, B. Two new species of Opuntia. Bull. Torrey Club 38: 
141-143. 7 Ap 19rtt. 
Mackenzie, J. D. B. Some medicinal plants indigenous to the Mira- 
michi, with their common names and use in medicine. Proc. 
Miramichi Nat. Hist. Assoc. 6: 29-34. 1911. 
Merrill, G. K. Lichen notes No. 16. (Containing something of record 
and comment, and describing one new species.) Bryologist 14: 
36-38. Mr 1911. 
Includes description of Leptogium pilosellum Merrill. 
Morse, W. J., & Lewis, C. E. Maine apple diseases. Bull. Maine 
Agric. Exp. Sta. 185: 337-392. f. 237-266. D 1910. 
Murrill, W. A. The Agaricaceae of tropical North America—II. 
Mycologia 3: 79-91. 18 Mr IogIt. 
I5 new species described in Leucomyces (1), Lepiota (13), and Limacella (1). 
Murrill, W. A. Studying tropical American fungi in European her- 
baria. Jour. N. Y. Bot. Gard. 12: 43-54. pl. 82+ f. 7-15. Mr 
IQIt. 
Nash, G. V. Cypripediums, or lady-slippers. Gard. Chron. Am. 12 
140-142. Mr 1ro1t.  [Illust.] 
Nash, G. V. Observations on the hardiness of plants cultivated at 
the New York Botanica! Garden. Gard. Chron. Am. 12: 172-175, 
177... Mrtoin 
Palmer, T.C. The apparatus of locomotion in Surirella. Proc. Dela- 
ware County Inst. Sci. 5: 146-156. f. 1-3. Jl 1910. 
Pennell, F. W. Flora of the Conowingo barrens of southeastern Penn- 
sylvania. Proc. Acad. Nat. Sci. Philadelphia 62: 541-584. F 1911. 
Pennington, L. H. Upon assimilation of atmospheric nitrogen by 
fungi. Bull. Torrey Club 38: 135-139. 7 Ap I9II. 
Porter, C. E. Bosquejo histérico, desarrollo y estado actual de los 
estudios sobre antropologia, flora y fauna chilenas. Anal. Soc. Ci. 
Argent. 70: 267-309. S 1gto.  [Illust.] 
Rehder, A. Pistillody of stamens in Hypericum nudiflorum. Bot. 
Gaz. 51: 230, 231. 15 Mr 1911. 
Riddle, L. W. The rediscovery of Parmelia lophyrea Acharius. Bry- 
ologist 14: 35. Mr 1911. 
