406 Introduction to Botany. 



Dis'tichous (di- -f Gr. stichos, a row or verse) : in two vertical rows. 



Distinct' : separate, not united. 



Divar'icate (di- + L. varicare, to straddle) : widely diverging. 



Diver'gent : inclined away from each other. 



Divi'ded : lobed or segmented to the base or midrib. Figs. 236 and 239. 



Dor'sal (L. dorsum, the back) : the surface of a member turned away from 



the main axis; thus, the dorsal surface of a leaf is its under surface. 

 Drupa'ceous : producing or having the form of a drupe. 

 Drupe (L. drupa, an overripe olive) : a fleshy or pulpy fruit with the inner 



portion hard or stony. Figs. 331 and 332. 



E- or ex- : in compound words meaning out from, without, or destitute of. 



Ebe'neous : black as ebony. 



Ebrac'teate : without bracts. 



Ech'inate, pr. ek'inate (L. echinus, a hedgehog) : beset with bristles; like a 



hedgehog. 



Effuse' : very loosely spreading. 

 Egg : the female cell which after fusion with the sperm develops into an 



embryo or new plant. 

 Ela'ter (Gr. elater, a driver) : a spirally marked thread borne among the 



spores of some liverworts and slime moulds. 



Ellipsoidal (Gr. elleipsis, ellipse; eidos, form) : shaped like an ellipse. 

 Emar'ginate : having a decided terminal notch. Fig. 254. 

 Em'bryo (Gr. embryon, an embryo) : the rudimentary plant within a seed. 

 En'docarp (Gr. endon, within; karpos, fruit) : the inner layer of a matured 



ovary. 

 En'dogen (Gr. endon + genos, descent or birth) : a plant among the Sper- 



matophytes without a true cambium ring, as in grasses and monocotyled- 



onous plants in general. 



Endogenous: pertaining to an endogen; arising from deep-seated tissues. 

 Entire' : with undivided margin. 

 Ephem'eral (Gr. ephemeras, daily; from epi, over, and hemera, day) : lasting 



only one day. 



Ep'icarp (Gr. epi, upon or over; carpos, fruit) : outer layer of a mature ovary. 

 Epicot'yl (Gr. epi + cotyle, hollow vessel) : the young shoot above the 



cotyledons. 

 Epider'mis (Gr. epi + derma, skin) : the outer protective layer of cells of 



leaves, young stems and roots, and fruits. In old stems and roots the 



epidermis becomes permanently replaced by cork. 

 Epig'ynous (Gr. epi -f gyne, woman) : growing from the summit of the 



ovary, or apparently so. Fig. 123, C. 



