Decumbent ; lying on the ^ound, but tending to rise at the end. 

 Decurrent ; when the limb of a leaf is prolonged down the stem 



below the point of attachment of the midrib. 

 Decussate ; opposite leaves, but the successive pairs placed at 



right angles to each other. 

 Dejlexed ; curved downwards or towards the back. 

 Dehiscence ; the mode in which an organ opens. 

 Deltoid ; fleshy with a triangular transverse section. 

 Dentate ; with short equilateral triangular teeth. When these 



are again dentate, the whole is doubly dentate : not bidentate, 



which means having two teeth. 

 Denticulate ; finely dentate. 



Depressed; when flattened vertically or at the top. 

 Determinate inflorescence ends in a flower. 

 Dicotyledonous ; with two opposite cotyledons. 

 Didymous ; formed of two similar parts attached to each other 



by a small portion of their margin. 

 Diffuse ; widely spreading. 

 Digitate ; fingered ; of several leaves all stai-ting from the top 



of the petiole. 

 Dioecious ; with the sexes on different plants. 

 Disk ; a fleshy space from which the stamens and pistils spring, 



or between them ; the central part of a head (capitulum). 

 Dissepiments ; vertical plates dividing an ovary into parts ; septa. 

 Distichous ; arranged above each other in two rows on opposite 



sides of an axis. 

 Distinct ; separate from its neighbours. 

 Divaricate ; spreading at an obtuse angle. 

 Diver r/ing ; gradually separating. 

 Dorsal; attached to, or on the back. 



Drupe ; a one-celled superior fruit, not bursting, fleshy exter- 

 nally, stony within, containing one or two seeds. 



Echinate ; armed with straight slender prickles like a hedge- 

 hog. 



Dllijjtic ; oval but acute at each end. 



Elongate ; much lengthened. 



Emarginate ; slightly notched at the end. 



Embryo ; the young plant as first seen in the seed. 



Entire ; not toothed nor lobed at the edge. 



Epidermis ; the skin. 



Epigynous ; apparently seated upon the ovary. 



Epipetalous ; borne on the petals. 



Epiphytes ; plants growing upon others, but not deriving nou- 

 rishment from their juices. 



Equallitig ; when the ends of organs rise to the same height, 

 even though their relative lengths are different. 



