444 A TEXT-BOOK OF BOTANY. 



Dioicus-a-um. Unisexual. The two sexes on different plants. Gr. 6i- t 61? 



twice, -f oJ/cof , a house. 



Dioscorea. Yam. Dedicated to the Greek naturalist, Dioscorides. 

 Diospyros. Persimmon. From Gr. A/df, of Jupiter, -f- irvp6^, grain. 

 Diphyllus-a-um. Having two leaves. Gr. 6i- } rf/f, twice, + QvMor, a leaf. 

 Dipsacus. Teasel. The classical name. Probably from rf/^a, thirst, be- 

 cause the united cup-shaped bases of the leaves of some species hold 



water. 



Dirca. Leatherwood. Moosewood. Name of uncertain origin. 

 Domesticus-a-um. Domestic, common. 

 Domingensis-e. Of Santo Domingo. 



Dorema. Ammoniac plant. From Gr. dupr/pa, a gift, benefit. 

 Dorstenia. Contrayerva. Named for T. Dorsten, German botanist, six- 

 teenth century. 

 Drosera. Sundew. From Gr. fipocepoc.^ dewy. The glands of the leaves 



exude drops of a clear glutinous fluid, which glitter like dewdrops. 

 Dryopteris. Greek name of a fern growing on oaks. From 8pv$, oak, + 



Trrep/f, a fern. 



Dulcamara. Bittersweet. From Lat. dulcis, sweet, + amarus, bitter. 

 Dulcis-e. Sweet. 

 Dysentericus-a-um. Pertaining to dysentery, dysenteric. Gr. dvaevrepiKoc;, 



afflicted with dysentery. 



Ebenaceae. Ebony family. From Gr. efievos, Lat. ebcnus, ebony. 

 Ecballium. Squirting cucumber. From Gr. f/c ? out of, -f- /MAAw, to throw. 

 Elasticus-a-um, Elastic, gummy. Probably formed from Gr.evlavvw, to drive. 

 Elaterium. Classic name for a medicine prepared from the juice of the 



wild cucumber. From Gr. k7.ci.vvu, to drive away. 

 Eleocharis. Spike rush. From Gr. e/iof, a marsh, + #dp*f, grace ; being 



marsh plants. 



Elettaria. Cardamom. From clettari, native name of plant in Malabar. 

 Eleuteria. From Eleuthera, one of the Bahama Islands. 

 Epigrca. Ground laurel. Trailing arbutus. From Gr. CTT/, upon, + -yq } 



earth, in reference to its trailing growth. 

 Equisetacese. Horsetail family. Ancient Latin name equiscrtum (equi- 



seta) , the plant horsetail. 

 Equisetum. Horsetail. Ancient Latin name. Derived from equus, horse, 



-f- sect a (seta), a bristle. 

 Erectus-a-um. Upright, elevated, lofty. 

 Ergota. Ergot. From French ergot, a spur. 

 Ericaceae. Heath family. From Gr. epe/'/cj?, heath, heather. 

 Erigeron. Fleabane. Ancient Greek name of a groundsel, probably 



Scnecio vulgaris. From ypi, early, -f- yepuv, old man, from the hoary 



appearance of some vernal species. 

 Eriodictyon. From Gr. eptov, wool, + rf/ruov, a net ; in allusion to the 



woolly, net-veined leaves. 



