tartareous 
tephrus 
tartar’eous, -eus (Mid. Lat., tar- 
trum, wine tartar), having a rough 
crumbling surface, like some 
Lichens. 
taw’ny, fulvous, a dull bro ynish- 
yellow. 
taxiform’is (taxus, the yew, forma, 
shape), arranged distichously like 
the leaves of yew. 
taxinom'ic= TAXONOMIC. 
Tax'is (rdés, order), used by Czapek 
to express reaction of free organ- 
isms in response to external 
stimuli by movement; Taxit/ery 
(répas, @ monster), a modification 
which is so slight as to admit of 
comparison with the normal form ; 
Taxol’ogy (Aéyos, discourse) or 
Taxon’omy (véuos, law), classifica- 
tion ; Taxono’mist, one skilled in 
classification ; adj. taxonom’ic. 
Tear, a drop of gum or resin in its 
native state ; tear-shaped, like the 
pip of an apple, lachrymiform. 
Teeth, (1) any small marginal lobes; 
(2) in Mosses, the divisions of the 
peristome. 
Teg’men (Lat., a covering), (1) the 
inner coat of a seed, previously 
the secundine of an ovule; (2) +} 
the glume of a grass ; pl. Tegmen’- 
ta, the scales of a leaf-bud; ~ 
folia'cea, fulcra'cea, spetiola’cea, 
stipula’cea, modifications of leaves, 
stipules and petioles, petioles and 
stipules only (Lindley) ; tegmina’- 
tus (Lat.), when the nucellus is 
invested by a covering. 
tegument’ary (tegumen, a cover), re- 
lating to some covering; Tegu- 
men’tum, (1) the indusium of a 
Fern; (2) the spermoderm. 
Te’la (Lat., a web), elementary tissue, 
as meristem; ~ contex’ta, a weft 
of distinct hyphae, felted tissue ; 
Ger. ‘‘ Filzgewebe.” 
teleian’thus (7éevos, perfect, dvdos, a 
flower), hermaphrodite. 
Teleol’ogy (réAcos, gen. of rédos, com- 
pletion, dédyos, discourse), the 
doctrine of final causes, or theory 
of tendency to an end; adj. 
teleolog’ic. 
Teleutoconidium = Teleutogonid’ium 
(reXeurh, an end, + GonrDivM), 
= TELEUTOSPORE; Teleu’tospore 
(copa, @ seed), a resting bilocular 
spore of Uredineae on germination 
producing a promycelium. 
Telog’amae (rédos, an end, ydpos, 
marriage), Ardissone’s term for 
Florideae ; Telogonid’ium (+ Gont- 
DIUM), a gonidium arising from 
successive generations in the same 
cell (A. Braun) ; Tel’ophase (¢dcus, 
an appearance), the last phase of 
nuclear division. 
Tem’peratures, the sum of, used to 
mark a given period in the life-cycle 
of a plant. 
temulen’tous (temulentus, drunken), 
nodding in a jerky irregular 
manner, ¢f. NUTANS (Heinig). 
Tem/’ulin, an active principle occurring 
in Lolium temulentum, Linn. 
Tenac’ulum, pl. Tenac’ula (Lat., a 
holder), haptera or holdfasts of 
Algae ; adj. tenac’ular. 
Ten’dril, a filiform production, cauline 
or foliar, by which a plant may 
secure itself in its position. 
Ten’sion (tensio, a stretching), due to 
turgidity in cells, and manifested 
by movements of parts. 
Ten'tacle (tentaculum, Mod. Lat., a 
feeler), a sensitive glandular hair, 
as those on the leaf of Drosera; 
Tentac’uloid (eldos, resemblance), 
applied to long processes which 
pass through mammiform protuber- 
ances of the perigloea of Diatoms 
(Buffham). 
tenuifo'lious -lius (foliwm, a leaf), 
thin or fine-leaved; Tenuinucel- 
la‘tae (tenuis, narrow, + NUCELLUS), 
Van Tieghem’s term for those plants 
with true seeds, in which the 
nucellus is reduced to a layer of 
cells or wholly absorbed by the 
endosperm ; ten’uis (Lat.), thin. 
Tep’al, Tep’alum (anagram of petalum) 
a division of the perianth, sepal or 
eee ; restricted by H. G, Reichen- 
ach to the two unchanged petals 
of Orchids. 
teph’reus, teph’rus (repos, ashy), 
266 
