220 EUCAL YPTUS. 



Didymous: twin. 



Didynamous (statnens); having four stamens in two pairs, one pair shorter 

 than the other. 



Diffuse: spreading widely and irregularly. 



Digitate (fingered): where the leaflets of a compound leaf are all borne 

 on the apex of the petiole. , 



Digynous (flowei): having two pistils or styles. 



Dimerous: made up of two parts, or its organs in twos. 



Dimidiate: halved; or where a leaf or leaflet has only one side devel- 

 oped, or a stamen has only one lobe or cell. 



Dimorphous: of two forms. 



Dioecious or Dioicous: where the stamens and pistils are in separate flow- 

 ers on different plants. 



Dipetalous: of two petals. Diphyllous : two-leaved. Dipterous : two- 

 winged. 



Disciform or Disk-shaped: flat and circular, like a disk or quoit, 



Disk: the face of any flat body; the central part of a head of flowers, 

 like the Sunflower, or Coreopsis, as opposed to the ray or margin ; a 

 fleshy expansion of the receptacle of a flower. 



Dissected: cut deeply into many lobes or divisions. 



Dissepiments: the partitions of an ovary or a fruit. 



Distichous: two-ranked. 



Distinct : uncotnbined with each other. 



Divaricate : straddling ; very widely divergent. 



Divided (leaves, etc.) : cut into divisions extending about to the base or 

 the mid rib. 



Dodeca- (in Greek compounds): twelve; as 



Dodecagynous : with twelve pistils or styles. 



Dodecandrous : with twelve stamens. 



Dolabriform : axe-shaped. 



Dorsal : pertaining to the back (dorsum) of an organ. 



Double Flowers, so called : where the petals are multiplied unduly. 



Downy : clothed with a coat of soft and short hairs. 



Drupe : a stone-fruit. 



Drupaceous : like or pertaining to a drupe. 



Ducts : the so-called vessels of plants. 



Dumose : bushy, or relating to bushes. 



Duramen : the heart-wood. 



Dwarf : remarkably low in stature. 



E-, or Ex-, at the beginning of compound words, means destitute of ; 

 as ecostate, without a rib or midrib; exalbuminous, without albu- 

 men, etc. 



Eared : see auriculate. 



Ebracteate : destitute of bracts. 



