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GLOSSARY. 



Thrum-eyed or Thumb-eyed, flowers having 



short styles, where the stigma does not appear 



at the upper part of the tube of the corolla, 



as in Primula. 



Thyrsus, a sort of panicle, in form like a bunch 



of grapes, the inflorescence being definite. 

 Tigellus, the young embryonic axis. 

 ToiSE is equal to 1.94904 metres or 6.39459 



English feet.' 

 ToMENTOSE, covered with cottony, entangled 



pubescence, called totnentum. 

 ToRULOSE, presenting successive rounded swell- 

 ings, as in the moniliform pods of some 

 Cruciferae. 

 Torus, another name for thalamus ; sometimes 

 applied to a much-developed thalamus, as in 

 Nelumbium. 

 Trachea, a name for spiral vessels. 

 Trachenchyma, tissue composed of spiral 



vessels. 

 Transpiration, the exhalation of fluids by 



leaves, etc. 

 Treis, three ; Tris, thrice, in composition Tri. 

 Triadelphous, stamens united in three bundles 



by their filaments. 

 Triandrous, having three stamens. 

 Triangular, having three angles, the faces 



being fiat. 

 Trichophore, cellular body supporting the 



Cystocarp in some Floridese. 

 Trichogynium, a hair-like process in Floridess, 

 surmounting a cell, which after fertiUsation 

 becomes a cystocarp. 

 Trichotomous, divided successively into three 



branches. 

 Tricoccous, formed, by three elastic monosper- 



mal carpels. 

 Tricostate, three-ribbed, ribs from the base. 

 Tricuspidate, having three long points or 



cuspides. 

 Tridentate, having three teeth. 

 Trifarious, in three rows, looking in three 



directions. 

 Trifid, three-cleft, a leaf divided into three 



segments which reach to the middle. 

 Trifoliate or Trifoliolate, same as Ter- 

 nate. When the three leaves come off at 

 one point the leaf is temately-trifoliolaie ; 

 when there is a terminal stalked leaflet and 

 two lateral ones it is pinnately-irifoliolate. 

 Trigonous, having three angles, the faces being 



convex. 

 Trigynous, having three carpels or three styles. 

 Teijugate, having three pairs of leaflets. 

 Trilocular, having three loculaments. 

 Trimerous, composed of three parts ; a. trivter- 

 ous flower has its envelopes in three or 

 multiples of three. 

 Trimorphic, three forms of flowers in one 

 species, each on a different plant, and having 

 stamens and pistil ; there are three lengths of 

 stamens, of which two lengths are in each 

 flower ; and there are three lengths of styles 

 diff'ering in each fonn of flower, not associ- 

 ated with stamens of corresponding length. 

 Trinervis, having three nbs springing to- 

 gether from the base. 

 Tricecious, or Trioicous, a species producing 

 n hermaphrodite, staminate, and pistillate 



flowers on three separate individuals. 

 Triceciously-Hermaphrodite, same as Tri- 

 morphic. 



Tripartite, deeply divided into three. 

 Tripinnate, a compound leaf three times 



divided in a pinnate manner. 

 Tripinnatifid, a pinnatifid leaf with the seg- 

 ments twice divided;in a pinnatifid manner. 

 Triplicostate, three ribs proceeding from 



above the base of the leaf. 

 Triquetrous, having three angles, the faces 



being concave. 

 Tristichous, in three rows. 

 Triternate, three times divided in a ternate 



manner. 

 Trophosperm, a name for the placenta. 

 Truncate, terminating abruptly, as if cut off 



at the end. 

 Tryma, drupaceous fruit like the Walnut ; a 



superior i - celled i - seeded fruit, with a 



coriaceous or fleshy epi- and mesocarp ; a 



stony 2-valved endocarp with partitions on 



inner concave surface, as in Walnut 

 Tuber, a thickened underground stem or 



branch, as the potato. 

 TuBERcuLE, the swollen root of some terrestrial 



Orchids. 

 Tuberous, applied to roots in the form of tuber- 



cules. 

 Tubular, applied to the regular florets of the 



Compositse. 

 Tubular-bell-shaped, applied to a campanu- 



late corolla, which is somewhat tubular in its 



form. 

 Tunicated, applied to a bulb covered by thin 



external scales, as the Onion. 

 Turbinate, in the form of a top. 

 Turio, a young shoot covered with scales sent 



up from an underground stem, as in Aspara- 



Tylosis, development of irregular cells in the 

 interior of pitted vessels, seen in many 

 exogenous trees, as Walnut, Oak, and Elm. 



Type, the perfect representation or idea of any- 

 thing. 



Typical, applied to a specimen which has emi- 

 nently the characteristics of the species, or to 

 a species or genus characteristic of an order. 



Umbel, inflorescence in which numerous stalked 



flowers arise from one point. 

 Umbellule, a small umbel, seen in the com- 

 pound umbellate flowers of many Umbelli- 



ferse. 

 Umbilicate, fixed to a stalk by a point in the 



centre. 

 Umbilicus, the hilum or base of a seed. 

 Umbo, a conical protuberance on a surface. 

 Umbonate, round, with a projecting point in 



the centre, like the boss of an ancient shield. 

 Umbraculiferous, in the form of an expanded 



umbrella. 

 Uncinate, provided with an uncus or hooked 



process. 

 Undecim, eleven ; in Greek, Endeca, 

 Unguis, claw, the narrowed part of a petal ; 



such a petal is called Unguiculate. 

 Uni, in composition, one, same as Greek Mono. 

 Unicellular, composed of a single cell, as 



some Algae. 

 Unilateral, arranged on one side, or turned 



to one side. 

 Unilocular, having a single loculus or cavity. 

 Uniparous, a cymose inflorescence in which 



the primary axis produces one bract, and 



