ILLUSTRATED GLOSSARY -Continued. 



M 



v4 



Plicate, folded in pleats or furrows; e. g. 

 leaves of Camptothecium. (Fig. 14.) 

 PliccP, folds of a plicate leaf. 

 Pliiriseriale, many ranked; /. e., as applied 

 to leav'es, arranged in several rows along the stem. 

 Porose, see pitted, with which P'ig. 13 be- 

 longs. 



Primordial utricle, "The first layer depos- 

 ited within a cell." -As applied to the cells of the 

 moss leaf it refers to the layer of protoplasm 

 lying next the cell wall, which often is very con- 

 spicuous when dried and shrunken away from 

 the cell wall. As a character for use in the iden- 

 tification of species it is valueless, because its 

 appearance is due to circumstances not well 

 understood, and is frequently present in some 

 specimens and lacking in others of the same 

 species. 



Prosenchymatous cells, cells with pointed 

 ends dovetailing into each other. (Fig. 15.) 



Quadrate cells, cells square or nearly so. 

 (Fig I.) 



Rosiilate, in the form of a rosette. 

 Rugose, wrinkled (in the case of leaves it is 

 usually applied to tranverse wrinkles); e. g. 

 leaves of Hypnum rugosum. 



Secund, twisted or turned to one side. (F"ig. 

 16.) E. g. lea\es of many Hypnums. Not neces- 

 sarily curved as in the figure. 



Striate, marked with striae or slight furrows. 



Sulcate, deeply furrowed with longitudinal 



channels. As applied to leaves, both striate and sulcate really 



refer to the fold whose concave surface is on the inner or ventral 



surface of the leaf. 



Tubulose, see canaliculate. 



Uncinate, hooked, curved back at point. (Fig. 16.) 

 Undulate, with an alternately concave and convex 

 margin, wavy; e. g. leaves of Dicranum nndulatum. 



Ventral surface, the surface of a leaf next the stem. 

 Vermicular, narrow and curved like a little worm; 

 applied to leaf cells. 



