342 GLOSSARY. 



Disc, or Dish : an elevated riin of the torus. 



Disc-flowers ': the florets of a Composite flower, which are on the 



receptacle and have no rays. 

 Dissected : finely divided or cut. 

 Dissepiment : partition of an ovary or fruit. 

 Distichous : two-ranked ; in two rows. 

 Distinct : not cohering ; not united with each other. 

 Divaricate : extremely divergent. 



Divided leaf: one with the blade divided to the midrib. 

 Dodecandroiis : with twelve stamens. 



Dorsal suture : the outer suture, or that corresponding to the midrib. 

 Double flower : one with the petals multiplied. 

 Downy : having short and soft hairs. 

 Drupe : a stone fruit. 



Duet ! fused cells which form a continuous vessel or tube. 

 Duramen : the heart-wood. 

 Dwarf-: diminutive. 



E, or Ex (as a prefix) : destitute of. 



Eared : having ear-like appendages. 



Ebracteate : destitute of bracts. 



Ebracteolate : without bractlets. 



Echinatc : with prickles. 



Echinulate : with small prickles. 



Ectoplasm: the hyaline layer surrounding the naked protoplasm. 



Edentate : toothless ; not toothed. 



Efflorescence : anthesis ; flowering. 



Elaters : the threads interspersed with spores of Liverworts, etc. 



Eleutheropetalous : petals free or distinct ; polypetalous or chori- 

 petalous. 



Elliptical : oblong with regularly rounded ends. 



Emarginate : with a notch at the summit. 



Embryo : the rudimentary plantlet in the seed. 



Embryo-sac : the enlarged cell of the ovule in which the embryo 

 arises. 



Emersed : raised above water. 



Endocarp : the inner layer of a fruit. 



Endochrome : coloring matter in cells, especially that in Algse. 



Endogen : a plant with woody fibres (or bundles) and pith com- 

 mingled ; a Dicotyledonous plant. 



Endogenous : arising or growing within ; like an endogen. 



Endosperm : the albumen, or part of the seed which develops within 

 the embryo-sac. 



Endospore : the inner wall of a spore. 



Ensiform : shaped like a sword. 



Entire: even ; not notched nor toothed. 



Entomophilous flowers : those whose fertilization (pollination) is 

 eflfected by insects. 



Ephemeral : lasting but a day. 



Epi (as a prefix) : upon. 



