1 86 



MOSSES WITH A HAND-LENS 



ILLUSTRATED GLOSSARY OF BRYOLOGICAL 

 TERMS.* 



HIS is not intended to be an exhaustive glossary of 

 botanical terms, but mainly a glossary of those terms 

 which are either confined to bryological works or are 

 used in a somewhat different meaning when applied to 

 mosses. Thus the common terms descriptive of leaves 

 are omitted, except acumen and a few others that are used in a 

 peculiar or unusual way by some authors. Very few terms are 

 here defined that are sufficiently well explained in the common 

 phanerogamic botanies like Gray, Wood, or Britton and Brown. 

 Braithwaite's " British Moss Flora," Lesquereux and James' 

 " Manual," and Dixon and Jameson's " Handbook of British 

 Mosses " have been largely consulted, and an attempt has been 

 made to determine the meaning of each term according to the 

 usage of all the authors accessible. 



For most of the cuts we are indebted to the kindness of Mr. 

 H. N. Dixon, Mr. Jameson, and their publishers, who have very 

 kindly allowed us the , use of the cuts in their " Handbook of 

 British Mosses," a work which should be 

 in the hands of every moss student 

 whether English or American. Figs. 43 

 and 46 are from Mrs. Britton's " Ob- 

 server " article, by consent. Terms whose 

 meaning can be made sufficiently clear 

 by definition are not illustrated as a rule. 

 Acicular, needle-shaped. Applied to 

 the beak of the operculum. 



Acrocarpous, having the sporophyte 

 terminal on a stem or ordinary branch. 

 Acrocarpous mosses can usually be easily 

 distinguished by the erect habit, as shown 

 in the figure. (Fig. I.) The old sporo- 

 phyte often seems lateral in acrocarpous 

 mosses, because the stem grows on the 

 next year from a point just below the 

 base of the sporophyte. 



*The figures of the Glossary are numbered independently of the rest 

 of the book. 



