112 
Teratol'ogy —S ynonym for “Morphology. ” 
To a certain extent it rather treats of 
the malformations or deviations from 
the normal type of stmetnre of plants. 
An excellent account of this subject is 
given by T)r. ^faxwell T. IVIasters in a 
volomn published by the Ray Society. 
He divides the subject under the fol- 
lowing headings, viz. 1. Deviation 
from the ordinary arrangement, com- 
prising («) iinmu of ports* (cohesion and 
adhesion) ; of orpom 
(^lission, dialysis, solution); {f)aiterntiOn- 
of poi<Liion (displacement, prolification, 
heterotaxy, heterogamy, alteration in 
the direction of organs). 2. Deviations 
from ordinary forms, comprising (o) 
strasimorphy (peraistouce of juvenile 
forms) ; (/<) pleiomorphy (irregular 
peloria) ; (c) metamor}>hy (phyllody, 
metamorphy of the floral organs) ; (c?) 
heteromorphy (deformities, polymor- 
phy, alteration of colour). 3. Deviation 
from ordinary number — {a) increase of 
number of organs (multiplication of 
axile organs, irillorescence, multiplica- 
tion of foliar organs) ; (6) diminished 
number of organs (suppression of axile 
organs, Kuppression of foliar mgans). 
4. Deviation from ordinary size and 
consistence — (n) hypertrophy (enlarge- 
ment, elongation, enation); (/v)atroj)hy 
(ahfjrtinn, degeneration). 
Terci'nk, Terci'na— a membrane between 
the secundine and nucleus, but not 
generally allowed to be any more than 
some layer of the regular envelopes to 
the latter. 
Tere'do — A Ijoring animal. Any disease 
in plants produced by the boring of 
insects, 
Te'rete— A n organ, or any part of a plant, 
is so called when the transverse section 
is not angular, nearly cylindrical, but 
somewhat taijering into a very elon- 
gated cone. (See leaves of Dendrohmni 
teretlfoUum, and the flower-buds of 
Evcalpptm teretkornisy Blue Gum.) 
TEEGispER'iiUs—Synonym for “ Dorsif* 
erus,” which is the betterAerm. 
Ter'goi — T he back. 
Ter'mtsal, Ter.mina'lis — S ituate at the 
extremity of some part. 
Terminol'ogt — Synonym for “Glossology.” 
Tern — I n threes, or in a whorl of three. 
Terna'te, Tern.a'tes— Arranged by threes, 
about the same poit. TERNA'TO-riN- 
na'tuS — Wlien three seconclarypetioles, 
attached to a common petiole, bear 
leaflets arranged in a pinnate manner. 
(See leaves of Queensland Nut, whose 
leaves arc in a whorl of 3 or I, .Vuca- 
d(vmia teroifolia.) 
TERRA'.VErs, Terres'tuis— G rowing above 
the surface, on dry land. Terricole — 
Growing on the earth, 
Terrioknuj^ — B om on the ground— not 
epiphytal. 
Tessklla'tei),Tessella'tus— W hen colours 
are so blended in nearly s(juare or 
oblong patches as to represent an 
appearance of chequer-work, (See the 
bark at the base of the trunk of the 
Moreton Bay Ash, EncalypUis^ tesseU 
laris . ) 
Tessula’rts {Tessera^ a die) — Approaching 
the form of a cube. 
Trh'ta (A pot) — The outer coat of the 
epermodenn. 
Testa'ceous, Testa'ceus -Brownish-yel- 
low ; orange-yellow with much grey ; 
brick-dust colour. 
TeHTIC'UI.A, TESTIC'ULAfE, TESTICrL-A'TUS^ 
Solid and ovate. TKSTic'uLr.s, Tes'tis 
—S ynonym for “Anthera.” (See tho 
two oval tubers of many terrestrial 
Orchids. ) 
Tk'ter (Stinking) — Qriving out a f<etid 
odour. 
Tet'ra — Four in composition. Thus : 
TBTRACHOCAn'pirM— A cluster of four 
spores in certain Algae. Tktkacho'- 
TOMUS — When a cyme (in its restricted 
sense of fascicle) bears four lateral 
]ied uncles about the terminal flow’er. 
TETRAC’oa'cua — A fruit composed of 
fourcocca. Tetradymus — Whercevery 
alternate lamella of an Agaric is shorter 
than the two contiguous to it, and one 
complete lamella terminates a set of 
four pairs of short and long ; also, 
where four cells or cases are combined. 
Tetra'dy.namia, Tetrady'namocs — A 
name given to flowers where the 
stamens are six, two of which are 
shorter than the other four. Tetra'- 
GONOUs, Tetr.\go'nus — Having four 
angles, not very acute. Tetra'gyNOI'h, 
Tetra'gyncs — Where the four carpels, 
or at least styles, are free. Tetran'- 
DROGa -Having four stamens. Tet'- 
r.ahe'drical — Having four sides. Tet'* 
RASPORE8 — Certain spores produced in 
fours. 
THAr/AMiFi.o'R.f) (1st scries of Polype'tal®) 
— Torus .small or elongated, rarely 
expanded in a disk. Ovary superior. 
Stamens definite or more frequently 
indefinite. 
Thalamium— Synonym for “ Hymenium.” 
Thalltne — Composed of, or of the same 
substance as the thallus. 
Tha'llus — A frond or exp,an.sion somewhat 
resembling a leaf. 
The'ca=As'ous. 
Thele'phohus— C overed with nipple-like 
prominences. 
Thorns — S ee prickles and spines. 
Thrix, Trichos— H air. As in the words 
trichncej)halus, acrotriche, &c. 
Thtrre, Thyk'sus— a branched raceme, in 
which the iinddle branches are longer 
than those above, or below them. 
Thtu'.^cla— Diminutive of “Thyrsus.” 
Thyrsif'ercs, Thvesiklo'uus— Where 
the inflorescence is a Thyrsus. (See 
Dkhorisandra thifrsijloray not an un- 
common garden plant, with deep-blue 
flowers.) 
TiGEii'LA( ALatinized word from the French 
Tigclle^ diminutive of Tige, a stem)—* 
The portion of the embryo between the 
radicle and cot.yledons. Tegella'tus 
— When the tigella is well marked. 
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