explanate 
Eye 
~ of protoplasm, the normal con- 
dition when it is impermeable 
to cell-sap, the opposite of con- 
traction, when it is flaccid and 
permeable. 
ex’planate, explana’ tus (Lat., flattened 
out), spread out flat. 
expul’sive (expulsus, driven out) 
Fruits, fruits which forcibly ex- 
pel their seeds. 
exquisi’tus ¢ (Lat., choice), used of 
parts larger or more highly coloured 
than usual, as Bracteac exquisitae ; 
cf. Coma. 
exscul’ptus (Lat.,carved out),showing 
small depressions as though dug 
out, as the seeds of Anchusa. 
exsert’, exsert’ed, exsert’us (Lat., pro- 
truded), protruding beyond, as 
stamens beyond the tube of the 
corolla. 
Exsicca’ta (exsiccatus, dry), dried 
plants, usually in sets for sale or 
subscribers, frequently with printed 
tickets. 
exstip’ulate, exstipula’tus (ex, priv., 
+SrTIPuLa), wanting stipules. 
exsuc’cous, exsuc’cus (Lat.), juiceless. 
Extensibility (extensus, spread out), 
having the property of stretching. 
extenua'tus (Lat., thinned), a sy- 
nonym of vircatus (Henslow). 
exten’sus (Lat.), spread out. 
exte’rior (Lat., outer), outer ; in the 
flower sometimes = ANTERIOR. 
extern’al, extern’us (Lat.), outward ; 
~ Sheath, a modification of the 
bundle-sheath, stated to occur in 
Ferns (Russow). 
Ex’tine (extimus, outside + ine), the 
outer coat of a pollen-grain. 
ex'tra (Lat.), without, beyond, as 
ex’tra-axill/ary, ~ -azilla’ris, be- 
yond, or out of the axil; 
cell’ular, outside a cell; ~ fas- 
cic'ular, outside the vascular 
bundles; ~ flor’al, beyond the 
flower, as some nectaries ; 
folia’ceous, away from the leaves, 
or inserted in a different position 
from them; ~ mat’rical, outside 
of w nidus or matrix; ~ me‘dian, 
beyond the middle; ~ sem’‘inal, 
a 
~ 
~ 
97 
outside the seed, as ~ ~ Devel’op- 
ment, following the sowing of the 
seed, as the escape of the embryo, 
etc. ; ~ ste’lar, the ground-tissue 
outside the central cylinder. 
Extrameabil‘ity (extra, beyond, mea- 
bilis, penetrable), the capacity of 
protoplasm to permit substances to 
pass outwards from its vacuoles 
(Janse), 
extra’rius (Lat., outward), placed on 
the outside. 
extratrop'ical (extra, without, + 
Tropic), beyond the tropics, to the 
north or south of them; extrava- 
ginal (vagina, a sheath), beyond 
or outside the sheath, applied to 
branches springing from buds, 
which break through the sheath of 
the subtending leaf, chiefly in 
grasses; Extravasa'tion (vas, a 
vessel), unnatural flow of a liquid 
from a tissue or organ, as the 
“‘bleeding ” of vines. 
ex’trorse, extror’sus (exteros, on the 
outside, versws, towards), directed 
outward, as the dehiscence of an 
anther. 
ex'tus, a modern term = EXTRA; 
similar in form to intus, but not 
classic Latin. 
Exuda’‘tion (evudo or exsudo, [ sweat), 
the transpiration of liquids from 
hydathodes, etc., ag seen on the 
leaf-tips of Monocotyledons. 
exunguic'ulate (ex, priv. ungula, a 
claw), without a claw (Crozier). 
exu'tive (exutus, drawn off), applied 
to seeds wanting the usual integu- 
ment. 
Exu'viae (Lat., stripped off clothing), 
cast off parts, as shed scales ; Exu- 
via‘tion, the operation of shedding 
effete material. 
Eye, (1) a gardener’s name for an un- 
developed bud ; (2) the persistent 
calyx of a pome, cf. Crown; (3) a 
conspicuous spot in a flower, as a 
blotch of colour; ~ Spot (1) a 
coloured spot in a motile gamete 
or spore, which is sensitive to 
light ; (2) markings on the silicious 
valve of Coscinodiscus, consisting 
