tartareous 



tephrus 



tartar'eous. -ens (Mid. Lat., tar- 

 trum, wine tartar), having a rough 

 crumbling surface, like some 

 Lichens. 



taw'ny, fulvous, a dull brownish- 

 yellow. 



taxiform'is (taxus, the yew, forma, 

 shape), arranged distichously like 

 the leaves of yew. 



taxinom'ic = TAXONOMIC. 



Tax'is (rd^Ls, order), used by Czapek 

 to express reaction of free organ- 

 isms in response to external 

 stimuli by movement ; Taxit'ery 

 (repas, a monster), a modification 

 which is so slight as to admit of 

 comparison with the normal formj; 

 Taxol'ogy (\6yos, discourse) or 

 Taxon'omy (i/6/xos, law), classifica- 

 tion ; Tazono'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) J 

 the glume of a grass ; pi. Tegmen'- 

 ta, the scales of a leaf-bud ; <~ 

 folia'cea, fulcra'cea, petiola'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' turn, (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 (reXetos, perfect, dvOos, a 

 flower), hermaphrodite. 



Teleol'ogy (rfXeos, gen. of rAos, com- 

 pletion, \6yos, discourse), the 

 doctrine of final causes, or theory 

 of tendency to an end ; adj. 

 teleolog'ic. 



Teleutoconid'ium = Teleutogonid'ium 

 (rfXevTT], an end, + GONIDIUM), 

 = TELEUTOSPORE ; Teleu'tospore 

 (criropd, a seed), a resting bilocular 

 spore of Uredineae on germination 

 producing a promycelium. 



Telog'amae (reXos, an end, ya/j.os, 

 marriage), Ardissone's term for 

 Florideae ; Telogonid'ium ( + GONI- 

 DIUM), a gonidium arising from 

 successive generations in the same 

 cell (A. Braun) ; Tel'ophase (0d<rts, 

 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, cf. NUTANS (Heinig). 



Tem'ulin, an active principle occurring 

 in Lolium temulentum, Linn. 



Tenac'ulum, pi. 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 (eftJos, resemblance), 

 applied to long processes which 

 pass through mammiform protuber- 

 ances of the perigloea of Diatoms 

 (Buffham). 



tenuifo'lious -lius (folium, a leaf), 

 thin or fine-leaved; Tenuinucel- 

 la'tae (tennis, narrow, + NUCELLDS), 

 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 oipetalum), 

 a division of the perianth, sepal or 

 petal ; restricted by H. G. Reichen- 

 bach to the two unchanged petals 

 of Orchids. 



teph'reus, teph'rus (re<pos, ashy), 



266 



