Jones: Flora of Illinois 359 



Dentate. Coarsely toothed, with the teeth directed outward. 



Denticulate. Minutely dentate. 



Determinate (inflore.scence). One in which the terminal flower is the oldest 



and therefore the first to open, the order of flowering proceeding from 



the top downward. 

 DiADELPHOUs. Having the stamens united by their filaments in two sets, as 



in almost all papilionaceous flowers. 

 Diffuse. Loosely spreading or branching. 

 Digitate. Compound leaves with the leaflets arising from the apex of the 



petiole. 

 DiMORPHOU.s. Occurring in two forms. 



Dioecigu-s. Having the staminate and pistillate flowers on different plants. 

 Discoid. Resembling a disk; a discoid head (in Compositae) is one without 



ray-flowers. 

 Disk. A development of the receptacle about the base of the pistil; the 



common receptacle of the heads of Compositae. 

 Dissected. Divided into many narrow segments. 



Distinct. Separate: not united with parts of the same series; not connate. 

 Divaricate. Spreading; widely divergent. 

 Divided. Separated to the base or to the midvein. 



Double. Said of flowers that have more than the usual number of petals. 

 Drupe. A succulent indehiscent fruit with a bony, usually one-seeded endo- 



carp; a stone-fruit, such as a plum. 

 Drupelet. A little drupe, such as the individual carpels which together 



form the blackberry and similar fruits. 



EcHiNATE. Beset with prickles or bristles. 



Ellipsoid. A solid body elliptical in longitudinal section. 



Elliptical. Having the form of an ellipse; nearly oblong. 



Emarginate. Deeply notched at the apex. 



Endocarp. The inner layer of the pericarp. 



Entire. With smooth margins, not toothed or lobed. 



Epigynous. Borne on the ovary; applied to petals and stamens when the 



ovary is inferior. 

 Epipetalous. Borne upon the corolla. 

 Episepalous. Borne upon the calyx, 

 Equitant. Said of conduplicate leaves which alternately enfold each other 



as in Iris, the upper part of the leaf being flat and \ertical. 

 Erose. With jagged margin, as if gnawed. 

 Escape. Escaping from cultivation, and maintaining itself. 

 Evanescent. Soon disappearing. 

 Evergreen. Remaining green in the dormant season; applied to plants whose 



leaves persist throughout the year. 

 Exfoliating. Peeling off in thin layers. 

 Exserted. Prolonged beyond the surrounding organs, as stamens from the 



corolla; not included. 

 Exstipulate (or estipulate). Lacking stipules. 



Falc.\te. Sickle- or scythe-shaped. 



Farinose. Covered with mealy powder. 



Fascicle. A compact cluster or bundle. 



Fastigiate. With stems or branches erect and close together. 



