452 APPENDIX. 



Deltoid, applied to a solid leaf, the transverse section of which resembles the 



Greek A. 

 Dentate, having the margin divided into small incisions, resembling teeth. 

 Dentato-sinuate, scolloped and toothed. 

 Denticulate, having the margin finely and slightly toothed. 

 Depressed, pressed down ; flattened vertically. 

 Diadelphous, having stamens collected into two bodies ; as in Milkwort, 



Rest-harrow, &c. 

 Diandrous, having two stamens. 



Dichotomous, branched in pairs ; as the stem of Purging Flax, Night- 

 shade, &c 

 Dicotyledons. See Cotyledon. 

 Didymous, twin, two united ; as the fruit of Madder and Woodruff ; the 



anthers of Mercury, &c. 

 Didynamous, having two long and two short stamens in the flower ; as in 



Foxglove, Dead-Nettie, Thyme, &c. 

 Diffuse, scattered, widely spreading. 

 Digitate, fingered, shaped like the hand spread open ; as the leaves of 



Horse-Chestnut. 

 Digynous, having two pistils or styles. 

 Dioecious ; when the same species has males or stamens only in the flowers 



of one individual, and females or pistils only in the flowers of another, 



such a plant is named dioecious ; as Bryony, Juniper, Mercury. 

 Discoid ; when in compound flowers the florets are all tubular, the head of 



flowers is said to be discoid. In other cases when the florets of the 



centre of a head of flowers are more perfect than the rest, they are 



called discoid. 

 Disk, the fleshy annular process that surrounds the gennen or ovary in some 



flowers ; the centre of a head of compound flowers ; also a receptacle 



which adheres to the calyx. 

 Dissepiments, the partitions by which a seed-vessel is divided, and by which 



it is separated into cells. 

 Distichous, arranged in two opposite rows. 

 Divaricate, straggling ; spreading or branching wide apart. 

 Dodecandrous, having twelve stamens. 

 Dolabriform, axe-shaped. 

 Dorsal, growing on the back. 

 Doubly-serrated, twice-serrated. 

 Down, short soft hairs resembling the down of birds. 

 Drupe, a kind of fruit with a fleshy succulent exterior, and containing 



a hard stone or nut ; as in Cherry-Laurel, Mezereon. 



E. 



Eared, having ear-like projections at the base ; as the lower leaves of Bo- 

 rage and Sage. 

 Egg-shaped, see Ovate. 



