Intervenium 
Inulin 
Inter’venium (inter, between, vena, a 
vein), a portion of parenchyma be- 
tween the veins of a leaf; Inter- 
wea'ving (+ weaving), the union of 
hyphae by growing amongst each 
other, without cohesion; Germ. 
Verflechtung ; interxy’lary (+ Xyr- 
LEM), amongst the xylem elements. 
Intex’ine, Intex’tine (intus, within, + 
Exting), the inner membrane when 
two exist in the extine, or outer 
covering of a pollen-grain ; In’tine, 
the innermost coat of a pollen- 
grain. 
Intor’sio (Lat., curling or crisping) ; 
Intor’tion = Torsion ; intor’tus 
(Lat., twisted), practically a syn- 
onym of contorted, twisted upon 
itself, 
intodisca’lis + (intus, within, discus, a 
disc), inserted within the disk of a 
flower. 
intracarp’ellary (intra, within, + CaR- 
PEL), within the carpels ; intra- 
cellular (+ CELLULAR), within a 
cell; intrafascie’ular (fascic'ulus, a 
bundle), within a bundle; intra- 
filar (jflum, a thread), within a 
filament ; intrafolia’ceous, -ceus 
(folium, a leaf, + aceous), within 
or before a leaf, as within the axil; 
intralam’ellar (lamella, a small 
plate), within plate-like structures, 
as the trama of Agarics; intramarg’- 
inal (margo, a margin), placed 
within the margin near the edge; 
intramat’rical (matrix, a mould), 
inside a matrix or nidus; Intra- 
meabil'ity (meabilis, penetrable), 
the capacity of protoplasm to per- 
mit substances to pass into its 
vacuoles (Janse) ; intramolec’ular 
(+ MotgcuLz), within the mole- 
cules; intramu’ral (muralis, per- 
taining to a wall), between the 
walls of cells, as ~ Glands, used 
by De Bary for multicellar organs 
of secretion, whose product ap- 
pears in the limiting walls; 
intranu’clear (nucleus, a kernel), 
within the nucleus; intrapet’iolar 
(petiolus, a small stalk), within the 
petiole, or between it and the 
stem, as ~ Buds, those which are 
completely enclosed by the petiole, 
as in Platanus. 
intrar’ious, intrar’ius (L. Lat.) turned 
inward toward the axis. 
intrasem’inal (intra, within, semen, a 
seed), within the seed ; ~Devel’op- 
ment,the whole development under- 
gone by the embryo during the 
conversion of the ovule into the 
ripe seed; intraste’lar (+STELE), 
within the stele, as ~ Tis’sue = Con- 
JUNCTIVE Tissue; intravagi’nal 
(vagina,a sheath), within thesheath, 
applied to branches which spring 
from buds which do not break 
through the sheath of the sub- 
tending leaf (Scribner); intravalvu- 
la‘ris (-+ VALVULARIS), within valves, 
as the dissepiment in many Cruci- 
ferae ; intraxy’lary( + XYLEM) with- 
in the xylem. 
in’tricate, intrica’tus(Lat.), entangled. 
introcur’ved, introcur’vus (Lat.), in- 
curved. 
introdu’ced (introduct’us, brought 
within), used of plants which have 
been brought from another country. 
introflex’ed (intro, inside, flecus, bent), 
inflexed. 
in’trorse,intror’sus (Mod. Lat.) turned 
inward, towards the axis. 
introve’nius (intro, inside, vena, w» 
vein), hidden veined; from the 
abundance of parenchyma, the veins 
not readily seen ; ¢f. AVENIUS. 
intru’ded, in’truse, intru’sus (Lat., 
thrust in), pushed or projecting 
forward. 
Intussuscep’tion (intus, within, sus- 
ceptus, taken up), the theory of 
growth, which assumes the inter- 
calation of new particles (micellae), 
between the already existing par- 
ticles of the cell-wall. 
In’ulase (from the genus Ina), an 
enzyme in Compositae which con- 
verts Inulin into Levulose; Inw’- 
lenin, a subordinate constituent 
of Inulin (Tanret); In’ulin, a 
body like starch, first found in 
Compositae, in the form of sphaero- 
crystals. 
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