Tersifonns 



tetramerous 



Ter' siforms {tersus, neat), in Eosa, those 

 forms which have all the ribs of 

 their leaves hairy (Alniquist). 

 Ter'tiospore {trrtuts, third ; airopa, a 

 seed), C. MacMillan's term for a 

 fertilized egg which undergoes re- 

 juvenescence and segments into 

 usually four spores, motile and simi- 

 lar to the spores of a gametophyte 

 generation ; the result of sporophytic 

 segmentation, as in Oedogonium. 

 tes'sellate, tessella'tus (Lat., of squared 

 stouesl, chequer- work, as in Fritil- 

 hiria Mdeagris, Linn, 

 tessula'ris [tesscrula, a small square 

 stone), of cubic dimensions, all sides 

 equal. 

 Tes'ta (Lat., a brick or tile), the outer 

 coat of the seed, usually hard and 

 brittle. 

 testa'ceous, testa'ceus (Lat., of bricks 



or tiles), brick-red. 

 testic'ular, testic'ulate, testicula'tus 

 (Lat.), sliaped like the tubers of 

 Orchis, and fruit of M er cur talis ; 

 Testic'ulus %, Tes'tk % (Lat.) = 

 Antheh. 

 Tes'tule {tcstula, a dim. of Te.sta), an 



old name for Fkustule. 

 te'ter (Lat., offensive), having a foul 



smell. 

 Tetrablas'tus {rirpas, four ; ^Xaarhs, 

 a bud), Koerl)er's term for those 

 Lichen-spores which consist of four 

 cells ; tetracam'arous, -rus{-\- Cam- 

 ARUs),of four closed carpels; tetra- 

 carpel'lary {Kapirhs, fruit), of four 

 carpels ; Tetracaro'tin (+ Carotin), 

 a lipochrome pigment resembling 

 carotin. 

 Tetrachae'nium % (rerpas, four, + 

 Achaenium), a fruit of four ad- 

 herent achenes, as in Labiatae ; 

 Tetrachocar'pium [rerpaxa, four- 

 fold ; Kap-rrhs, fruit) = TETRASrORR ; 



tetrachot'omous, tctrachoi' omus 



(reVvoj, I cut), when a cyme, in its 

 restricted sense of fascicle, bears 

 four lateral peduncles al)out the 

 termiual tlower ; Tetrachot'omy, the 

 fission of a stem into four branches 

 of equal rank (Worsdell). 

 tetracoc'cous,-«ts(T€Tpas; {owv, k6kkos, 



a berry), (1) consisting of four closed 

 carpels ; (2) applied to bacteria when 

 in four segments ; Tetracot'yl ( + 

 Cotyledon), a seedling with both 

 cotyledons deeply bifid (De Vries) ; 

 tetracy'clic [kvkKos, a circle), when 

 a flower is composed of four whorls 

 of organs. 

 Tet'rad (TcrpaSioi/, a set or group of 

 four), (1) a body formed of four cells, 

 as in the formation of pollen in the 

 pollen-mother-cells ; (2) = Tetra- 

 spoRE ; (3) in heterotypic nuclear 

 division, one division of a chromo- 

 some into four parts, forming a set ; 

 tetradip'loid (-f diploid), the fusion 

 of four nuclei (Nemec) ; Tetradogen'- 

 esis {'yivitxis, origin), the formation 

 of a tetrad of spores, thus including 

 all the phenomena of Meiosis. 

 tetrad'ymous (rerpciSu^os, fourfold), 

 (1) having four cells or cases ; (2) 

 when the lamellae of an Agaric are 

 arranged so that alternate laniellae 

 are shorter than the intermediates, 

 and one complete lamella termin- 

 ates a set of four pairs, short and 

 long. 

 Tetradynam'ia {r^rpas, four; Swvo^uts, 

 power), a Liunean class Avhich is 

 characterized by possessing tetrady- 

 nanious stamens ; tetrady'namout, 

 ■miis, having four long stamens and 

 two short, as in Cruciferae ; tetra- 

 folia'tus, tetrafo'lius {folium, a leaf), 

 four-leaved, more correctly tetra- 

 phyllous ; tetrag'onal (yovio, an 

 angle), four-angled; Tetragonidan'- 

 gium (-f Gonidangium), asexual re- 

 productive oigan in Floridean Algae, 

 producing tetragonidia ; Tetra- 

 gonid'ium(+ Gonidium), asexually 

 produced spores of Florideae, etc., 

 usually in gi'oups of four ; tetra- 

 g'onous [yuivia, an angle), four- 

 angled ; Tetragyn'ia {yyv)], a 

 woman), a Liunean artificial order, 

 the members having flowers with four 

 pistils ; tetrag'ynous, of four carpels 

 or styles ; tetrameriste'lic ( + Mer- 

 istele), used of leaf-traces when 

 composed of four meristeles (Breb- 

 ner) ; tetram'erous, -rus (fiepos, 



381 



