Eugenol 
Evolution 
Eu’genol, the chief constituent of oil 
of cloves, obtained from Pimenta 
acris, Kostel., and other myrtace- 
ous plants, formerly referred to 
Eugenia. 
eugeog’enous (ci, well, yi, the earth, 
yevvdw, I bring forth), Thurmann’s 
word to indicate rocks readily 
yielding detritus and the plants 
which grow on it; Eunu’cleole 
(+NvcLg£0LE), used by Rosen for 
an erythrophilous nucleus ; Euisog’- 
amy (yduos, marriage), the union 
of a gamete with any other similar 
gamete (Hartog). 
Eupato’rine, an alkaloid occurring in 
ELupatorium cannabinum, Linn. 
Euphor’bium, an acrid inspissated 
juice or resin from various species 
of Huphorbia. 
euphotomet’ric (cf, well, gas, dords, 
light, uérpov, a measure), used of 
leaves which place themselves so 
as to obtain the maximum of dif- 
fused light, as the foliage of forests 
(Wiesner). 
Eu’phylis (e?, well, gvAdov, a leaf), 
true leaves, foliage leaves; eu- 
phy'toid (gurov, a plant; cidos, 
like) Par’asites, are erect land 
plants, parasitic in habit (Johow) ; 
eu'schist (cx:ords, split), when a 
gamete is formed by successive com- 
plete divisions from the parent- 
cell, the Gametogonium (Hartog) ; 
eusporang’iate (copa, seed, dyyetov, 
a vessel), in Pteridophytes, possess- 
ing a sporangium, a Eusporan’gium, 
derived from a group of superficial 
cells; Eusporophy’ta(¢urov, aplant), 
Cryptogams defined by C. Mac- 
millan as ‘‘ self-supporting, and do 
not nurse the gametophytes,e.g. the 
higher mosses, the lower fern- 
worts and club-mosses” ; Eu’stathe 
+ (crauos, abode), ‘‘the external 
+ 
layer of a cell” (Lindley). 
Euthybas‘id (ed@vs, direct), Van 
Tieghem’s word for those basidia 
which spring directly from the 
sporophore ; cf. PRosasip ; Euthy- 
morph’osis (uopdwors, a shaping), 
the rapid succession of members of 
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different form on the same stem, 
buds, etc., polymorphism (Caruel). 
eu'thyschist (evd’s, immediately, 
ox.o70s, split), brood-division, when 
each nuclear division is accom- 
panied by cell division (Hartog). 
eutrop’ic (e%, well, rpd7os, direction), 
A. Gray’s word for twining with 
the sun, that is, left to right, 
dextrorse; Eu'tropy, applied by 
M‘Leod to those flowers to which 
only a restricted class of specialised 
insects can gain access. 
evalv'is, evalv'ular (ce, priv., valva, 
leaf of a door), destitute of valves, 
not opening by them. 
evanes’cent (evanescens, vanishing), 
soon disappearing, lasting only a 
short time; evaniscen’ti-veno’sus, 
when the lateral veins of a leaf do 
not reach the margin. 
Evaporation (evaporatio, vapouris- 
ing), to pass off in vapour. 
e’ven, without inequalities of sur- 
face; E’venness, absence of eleva- 
tions or depressions ; evenpin’nate 
= ABRUPTLY-PINNATE (Crozier) ; 
evergreen, bearing green foliage 
all the year; everlast’ing, used of 
some flowers which preserve their 
shape and colour in drying, as 
species of Gnaphalium, Helichry- 
sum, ete. 
ever’niaeform (forma, shape), like 
the thallus of Hvernia, a genus of 
Lichens; Ever’nine, a principle 
found in the same genus; evern- 
jo'id (eldos, like), resembling 
Hvernia. 
Ever'sion (eversio, an overthrowing), 
protrusion of organs from a cavity, 
turned backward or outward ; 
evert’ed, turned inside out. 
evident (evidens, manifest), clearly 
visible. 
evit'tate, evitia'tus (e, priv., vitta, a 
fillet), not having Vuirrag, oil- 
reservoirs in the fruit of Umbelli- 
ferae. 
e’volute (evolvo, I roll forth), unfold- 
ed, turned back; Evolu’tion, (1) 
the act of development; (2) the 
theory according to which complex 
