Appendix VI: Glossary. 
Dioecious. Unisexual, the flowers of 
different sexes borne by separate 
plants. 
Dioecio-polygamous. Dioecious with- 
some perfect flowers intermixed. 
Dipetalous. Having two petals. 
Diphyllous. Two-leaved. 
Dipterous. Two-winged. 
Disciform. In the shape of a disk, 
depressed and circular. 
Discoid. In compound flowers, having 
disk-flowers only, without rays. 
Disk. A dilation or development of 
the receptacle around the base of 
the pistil. In compound flowers, 
the inner series of tubular flowers 
as distinct from the marginal ray. 
Dissected. Deeply cut or divided into 
numerous segments. 
Dissepiment. A septum or partition 
separating the cells of an ovary or 
fruit. 
Distichous. Arranged in two vertical 
rows; two-ranked. 
Distinct. Separate; not united. 
Divaricate. Widely divergent, nearly 
at right angles. 
Divergent. Receding from each other. 
Divided. Cleft to the base or to the 
mid-nerve. 
Dorsal. Upon or relating to the 
dorsum. or back. 
Dorsifixed. Attached by or on the 
back. 
Dossed. Marked with transparent 
receptacles of oil, looking like dots. 
Drupaceous. Resembling or of the 
nature of a drupe. 
Drupe. A stone-fruit; a fleshy or 
pulpy fruit with the seed or kernel 
inclosed in a hard or stony casing 
(putamen).: 
Drupelet. A diminutive drupe, as 
each of the several parts of a black- 
berry. 
Dwarf. Much below the ordinary 
size of its kind. 
E-, or Ex. A Latin prefix having 
offen in botanical terms a privative 
signification. 
Ebracteate. Without bracts. 
Ecalcarate. Without spurs. 
Echinate. Beset with prickles. 
Ecostate. Without costa or midnerve. 
1211 
Edentate. Without teeth. 
Effuse. Very diffuse; very loosely 
spreading. 
Eglandulose. Without glands. 
Ellipsoidal. Nearly elliptical; or of 
solids, elliptical in outline. 
Elliptical. In the form of an ellipse. 
oblong with both ends uniformly and 
somewhat gradually rounded. 
Elongated Drawn out in length. 
Emarginate. Notched at the extre- 
midy. 
Embracing. Clasping at base. 
Embryo. The rudimentary plantlet 
formed within the seed, 
Emergent, Emersed. Raised above the 
water; of the capsule in mosses when 
barely exserted from its involucral 
leaves. 
Endemic. Confined to a particular 
country or region. 
Endocarp. The inner layer of the 
pericarp, lying next to the seed. 
Endogenous. Growing from within, 
instead of by superficial increments, 
the growth ordinarily being general 
throughout the substance of the 
stem. 
Endogens. Plants with an endogenous 
structure. 
Ensiform. Sword-shaped, as the leaf 
of an Iris. 1 
Entire. With the margin uninterrup- 
ted, without teeth or division of any 
sort. 
Ephemeral. Lasting but a day or for 
a very short time. 
Epi-. A Greek prefix signifying upon. 
Epicarp. The external layer of a 
pericarp. 
Epidermis. 'Uhe thin membrane for- 
ming the outer surface of leaves and 
young stems. 
Epigynous. At or upon the top of 
the ovary. 
Epipetalous. Inserted upon the petals. 
Equal. Alike in size, or number, ete. ; 
more frequently used in respect to 
length. 
Equitant. Astride, of conduplicate 
leaves which fold over each other 
in two ranks, as in Iris. 
Erect. Upright; perpendicular to the 
surface of attachment. 
Etiolated. Blanched by darkness. 
