202 GLOSSARY OE TERMS USED 



Papilla, minute excrescences on the cell-walls. 



Papillose, having a roughened appearance, owing to the presence 



of papillae. 

 Paraphyllia, small leafy bodies produced among the leaves of 



certain mosses (p. 94). 

 Paraphyses, minute thread-like bodies which accompany the 



reproductive organs of mosses (p. 37). 

 Paroicous, where both fertilising and fruit-bearing organs are 



produced in the same flower, but in distinct groups. 

 Pendulous, hanging down ; of the capsule, when the fruit-stalk 



bends round at its upper end (Plate III. fig. 21). 

 Perianth, another name for the cup-like envelope (or colesule) 



which in certain liverworts encloses the fruit-bearing and 



sometimes the fertilising organs. 



Perichcetial leaves, the special leaves which surround the fruit- 

 bearing organs. 

 Peristome, the fringe of teeth (or hairs) which surrounds the 



mouth of the capsule of a moss (p. 68). 

 Phanerogams, " flowering " plants, having stamens, pistils, and 



Pleurocarpous, where the fruit is produced at the side of the stem 



or branch. 

 Postical, the lower portion (or lobe) of the leaves of certain 



liverworts (p. 139). 

 Protonema, the first growth from the spore ; in mosses generally 



taking the form of delicate branching threads (p. 30), though 



sometimes a flat green plate (p. 120). 

 Pyriform, pear-shaped. 



Ring, see Annulus. 



Secund, of the leaves, when all turned to one side. 



Seta, the stalk of the fruit or capsule. 



Sheath, the lower portion of the fruit-bearing organ in mosses 

 (surrounding the base of the fruit-stalk), which is left 

 behind when the veil is formed (Plate I. fig. 8). 



Spathulate, spoon-shaped. 



