444 GLOSSARY. 



Proliferous. An umbel or flower is said to be proliferous when 



it has smaller ones growing out of it. A proliferous stem 



has joints growing one out of another. 

 Proteranihous, When the leaves appear before the flowers. 

 Pseudopinnate. Falsely or imperfectly pinnate. 

 Pubescent. Hairy or downy. 

 Pulp. The soft, juicy, cellular substance found in berries and 



similar fruits. 

 Pulpij. Filled with pulp. 

 Pulverulent. Dusty, Composed of powder, or appearing as if 



covered with it. 

 Pulvinate. Like a cushion. 



Punctate. Appearing as if pricked full of small holes, or dots. 

 Punctiform. Resembling dots. 

 Pungent. Sharp, acrid, pricking. 

 Putamcn. A hard shell. 

 Pyjcidium. A one celled, many seeded, superior fuit, with a dry, 



or thin pericarp, opening transversely, as in Anagallis. 



Quaternate. Four together. 

 Quinate. Five together. 



R. 



Raceme. A cluster ; a kind of inflorescence in which the flowers 

 are arranged by simple pedicels on the sides of a common 

 peduncle. 



Rachis. The common stalk to which the florets and spikelets of 

 grasses and other plants are attached. Also the midrib of 

 some leaves and fronds. 



Radiate. Having ligulate florets placed like rays at the circum- 

 ference, as in certain compound flowers ; or having the outer 

 petals largest, as in certain cymes and umbels. 



Radical. Growing immediately from the root. 



Radicle. The part of the corculum which afterwards forms the 

 root. Also the minute branch of a root. 



Ray. The diverging florets or petals which form the outside of 

 radiate flowers, cymes and umbels. 



