triplas 



Trophoplast 



trip'lus (Lat.), threefold; tripo'lar 

 (+ I'OLAR), liaving three poles. 



Triposplank'ton {+ Plankton), float- 

 ing marine vegetation made np 

 chiefly of Ccraiium Tripos (Cleve). 



trip'terous, -rus {rpi-, three ; irnphv, 

 a wing), three-winged. 



triq'ueter (Lat., three-cornered), tri- 

 que'troua, triq'uetrus, three-edged, 

 with three salient angles. 



triqni'nate, triquina'tus {tri, three, 

 -\- QiiNATUs), divided into three, 

 then into five ; tri-ridged, having 

 three ridges or projecting ribs; 

 tri'sect, trisec'ted, trisec'tus [Rectus', 

 cut), divided into three, three-cleft 

 to the base ; trisep'alous, trisep'alus 

 (+ Sefalum), having three sepals; 

 trisep'tate (+ Septum), with three 

 septa or partitions, as in many 

 spores ; trise'rial, triseria'lis ; trise'- 

 riate, triseria'tus {series, a row), in 

 three horizontal ranks or series, 

 trifarious ; trisperm'ous (o-TrcpMo. ^ 

 seed), three-seeded ; trigtach'yus 

 {(XTax^s, a spike of corn), three- 

 spiked ; tris'tichous, -chus {arixos, 

 a series), in three vertical ranks ; 

 tristigmat'ic, tristignuW icus ( + 

 Stigma), having three stigmas. 

 tris'tis (Lat, sad), (1) of a dull or un- 

 attractive colour, as the flowers of 

 Matthiola tristis, R. Br. ; (2) flower- 

 ing only at night (Heinig). 

 tristy'lous, -lus {tri, three, + Stylus), 

 with three styles; trisyncotyle'- 

 donous (De Vries), = tricotyle- 



DONOUS. 



trisurcate, trisulca'tus {trisuhus, 

 having three furrows), with three 

 grooves or furrows. 



triter'nate {tri, three, -+- tern ate), 

 thrice ternate. 



Tritice'tum, an association of Triticum 

 juncexim ; Tri'ticin, the proteid of 

 wheat, Triticum vttlgare, Vill., 

 present in its gluten. 



triun'dulate {tri, three, + undulate), 

 used for Diatoms having three un- 

 dulations on the dorsal side of the 

 valve. 



trival'vular {tri, three, + valvular), 

 three-valved. 



triver'ted, 0. Mailer's term for asym- 

 metric as applied to Diatoms, 

 trivial {trivialis, common-place), 

 ordinary, common ; '-' Names, the 

 common name of a plant, the ad- 

 jective, or more rarely, the second 

 substantive appended to a generic 

 name to connote a species. 

 Trix'eny {rpi, three ; |evos, a guest or 

 host), De Bary's term for the con- 

 dition of a parasite which passes 

 its career in three host-plants. 

 troch'lear, trochlea'ris {trochlea, a 

 pulley) ; trochlea'rifonn {forma, 

 shape), pulley-shaped, 

 Tropax'is {rpoiri], a turning, + Axis), 

 a theoretic plane between the cpi- 

 cotyl and hypocotyl, whence growth 

 proceeds in opposite directions 

 (White); cf. Transition. 

 troph'ic {Tpo(p^, nourishment), relating 

 to increase in thickness, cf. Trophy; 

 trophileg'ic {h4yw, I collect), collect- 

 ing food-material for the plant, as 

 the shell -like barren fronds of Platy- 

 cerium are supposed to do (Arch- 

 angeli) ; Troph'ime {TpScpi/xos, a 

 nursling), the result of the fusion 

 of the central nucleus of the 

 embryo sac, the mesocyst, with tlie 

 second antherozoid (Van Tieghem) ; 

 Trophochromid'ia (+ Chromidia), 

 Mesnil's term for vegetative chro- 

 midia; Troph'ogone {y6vos, ott- 

 spring), a growth in Ascomycetes 

 similar to those which produce 

 gametophores, but having a nutritive 

 function (Dangeard) ; Troph'ophyll 

 {(pvWov, a leaf), a vegetative leaf or 

 frond, as distinct from one which pro- 

 duces fructification ; Troph'opliyte 

 {(pvrhv, a plant), (1) an error for 

 Tropophyte ; (2) the fusion-product 

 in Wehoitschia and angiosperras, to 

 distinguish it from the prothallus of 

 the lower Cryptogams ; it has been 

 mistakenly applied to the endosperm 

 of Cycads (Pearson) ; Troph'oplasm 

 {■KXdfffxa, that formed), the Alveo- 

 lar-plasma of Strasburger , tropho- 

 plas'mic, adj. of Trophoplasm ; 

 Troph'oplast {irKaffThs, moulded), 

 A. JNIeyer's term for the essential 



393 



