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VOLUME VII. NUMBER 3 5 
MAY, 1904 
The BRYOLOGIST 
AN ILLUSTRATED BIMONTHLY DEVOTED TO 
NORTH AMERICAN MOSSES 
HEPATICS AND LICHENS 
EDITORS : 
ABEL JOEL GROUT and ANNIE MORRILL SMITH 
CONTENTS 
The Peristome VI. (Illustrated) . . A. J. Grout 37 
An Interesting Moss Book, ..... A. J. Grout 39 
Rhacomitrium Flettii n. sp., (. Illustrated ) John M. Holzinger 41 
A Bryologist’s Glimpse into Geological History, 
John M, Holzinger 42 
A Call for Assistance, .... John M. Holzinger 43 
Note and Supplementary Note, . J. Franklin Collins 44 
A Correction, John M. Holzinger 44 
A Correction, . A. J. Grout 44 
Lichens— Col lema=Leptogium, {Illustrated) Carolyn W. Harris 45 
Notes on Nomenclature HI., . . Elizabeth G. Britton 48 
Specific Value of Reproductive Organs in Bryum, A. J. Grout 50 
Something New on Buxbaumia, .... A. J. Grout 51 
Notes on Rare or Little Known Mosses, .... 51 
Alsia abietina, Dr. J. W. Bailey 
Buxbaumia aphylla, E. 7 '. Cresson, Jr. 
Hylocomium triquetrum Beringianum and Bryum 
proligerum, A. M. S. 
Chapter Offerings, 52 
Entered at the Post Office at Brooklyn, N. Y., April 2, 1900, as second class ot mail 
matter, under Act of March 3, 1879. 
Published by the Editors, 78 Orange St., Brooklyn, N. Y., U. S. A. 
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PRESS OF MC BRIDE & STERN, 97-99 CLIFF STREET. NEW YORK 
