Transmutation 
triarch 
acting in sympathy; ~ Cells = 
TRANSFUSION-TISSUE. 
Transmuta'tion (transmuto, I shift), 
chemical change by addition or 
alteration of composition without 
complete resolution into its ele- 
ments; ~ of Host, = LipoxEny. 
Transovula‘tae (érans, across, + 
OvuLum), Van Tieghem’s term 
for Phanerogams furnished with 
transitory ovules; Transpira’tion 
(spiratio, a breathing), the ex- 
halation of watery vapour from 
the stomata of plants, not mere 
evaporation. - 
Trans’ port (¢ransporto, I carry across), 
the conveyance of assimilated sub- 
stance from one part to another; 
translocation. 
transver’sal (transversus, athwart), 
lying crosswise; ~ Ax'is of Diatoms, 
that axis which lies in the trans- 
versal plane, cutting the per- 
valvar (main longitudinal) axis (0. 
Mueller); ~ Wall, that which 
divides the basal and median walls 
of the proémbryo of Archegoniatae, 
at right angles into upper and 
lower halves; transver’san Plane, 
that which passes through the 
centre of a Diatom frustule verti- 
cally to the pervalvar axis (0. 
Mueller); tran’sverse, transver’sus, 
transversa’lis, across, right and left 
as to bract and axis, collateral ; 
Lindley gives “‘broader than long” 
as the definition of transversus; ~ 
Cho’risis, when two or more organs 
instead of one appear above or 
within another; ~ Geot’ropism, = 
DrsGEorTRorism ; ~ Heliot’ropism 
=DIAHELIOTROPISM; ~ Planes, 
those which cut the axis of growth 
and surface at right angles, 
trape’ziform, trapexiform'is (rpaméfiov, 
a figure of four unequal sides, 
forma, shape), an unsymmetrical 
four-sided figure, as a trapezium, 
almost the same as rhomboid ; 
trap’ezoid, -dews (eldos, resemb- 
lance), like a trapezium. 
Trap-hairs, the special hairs which 
confine insects in certain flowers 
274 
till pollination is effected; ¢f. 
WICKER-BAIRS, 
Traps, pl., Prison-flowers, such as 
Aristolochia, which confine insect 
visitors until pollination has taken 
place. 
Traube’s Cells, artificial cells formed 
by various solutions of gelatine 
and other colloids, which have 
been used to explain the phe- 
nomena of intussusception. 
traumatrop’ic (rpadya, a wound, 
tporh, a turning), showing the 
influence of wounded root-tips ; ~ 
Curvature, the bending of roots in 
consequence of injury to their tips; 
Traumat’ropism, Pfeffer’s term for 
the phenomena consequent on the 
infliction of wounds on the tip of 
a growing root. 
Tre’halase, an enzyme which hydro- 
lizes Tre’halose, a sugar found in 
many Fungi and stated to be 
identical with the ‘‘Trehala” 
(Persian Manna), a waxy excretion 
produced by a coleopterous larva 
to form its cocoon. 
tremel'loid (Tremelia, eldos, resemb- 
lance), jelly-like in substance or 
appearance, like the genus 
Tremella. 
Tree, a woody plant with an evident 
trunk; tree-like, resembling a 
tree, but smaller ; dendroid. 
tri, in compounds, from Greek (rpeés) 
or Latin (¢res)=three or triple. 
Triachae’nium (éri, from tres, three + 
ACHAENIUM), like a cremocarp, but 
of three carpels; Triadel’phia 
(adehpos, a brother), a Linnean 
order of plants with their stamens 
in three sets; triadel’phous, fila- 
ments in three brotherhoods ; Tri- 
ake’nium = TRIACHAENIUM ; trian’- 
der =trian’drous, trian’drian (dvi, 
dvdpés, a man), having three 
stamens; Trian’dria, a Linnean 
class of three-stamened plants; 
trian’gular, triangula'ris (angulus, 
an angle), with three angles; 
triangula’tus (Lat.), three-angled ; 
trian’thous (dv@os, a flower), three- 
flowered, as a peduncle; tri’arch 
