4^6 Introduction to Botany. 



Ter'nate-pin'nate : applied to compound leaves when the secondary petioles 



occur in threes at the summit of the primary petiole. 

 Tes'ta (L. testa, a brick or tile) : the usually hard and brittle outer coat of a 



seed. 

 Testa'ceous : brick-red. 

 Tetradyn'amous (Gr. tetra, four; dynamis, power) : having four long and 



two shorter stamens, as in the Cruciferae. 

 Tetrag'onal (Gr. tetra + gonia, an angle) : four-angled. 

 Thal'loid : resembling or consisting of a thallus. 

 Thal'lophyte (Gr. thallos, a sprout; phyton, a plant) : a plant having no 



clear differentiation into stem and leaf. 

 Thal'lus, pi. thalli : a vegetative body having no distinction into stem and leaf. 

 Throat : the opening into the tube of a gamopetalous corolla. 

 Thyrse, pr. thers (Gr. thyrsos, the staff of Bacchus twined round with ivy and 



vine shoots) : a dense panicle like that of the lilac or grape. 

 Thyr'soid {thyrse + Gr. eidos, resemblance) : resembling a thyrse. 

 Thyr'sus: same as thyrse. 

 To'mentose (L. tomentum, a stuffing for cushions of wool, hair, or feathers) : 



covered with dense and matted woolly hairs. 

 Torose' (L. torosus, fleshy) : cylindrical with alternate swellings and con- 

 tractions. Tor'ulose : diminutive of torose. 

 Tor'us (L. torus, a bed) : the receptacle of a flower. Fig. 87, a. 

 Tri (Gr. or L. prefix tri, three) : in compound words, three or thrice. 

 Trian'drous (tri + Gr. aner, andros, man) : having three stamens. 

 Trich'ome (Gr. trichoma, a growth of hair) : any hair-, scale-, or bristle-like 



outgrowth from the epidermis. 

 Tri'fid (L. /r2, three; yJKat?-^,^?^^, to split) : three cleft. 

 Trifol'iate (L. tri, three; folium, a leaf): said of compound leaves of three 



leaflets, as in clover and oxalis. Fig. 259. 

 Trimor'phic or trimor'phous (Gr. tri, three; morphe, form) : occurring 



under three forms, as when the stamens and styles of different flowers 



are long, short, and intermediate. 

 Triter'nate (L. tri -f temi, by threes) : occurring in groups of threes three 



times. 

 Tropoph'ilous (Gr. trope, a turning; philein, to love) : adapted to change 



of condition, such as deciduous trees, or plants whose above-ground parts 



die away on the approach of winter or dry season. 

 Trop'ophyte (Gr. trofe + phyton, plant) : plant which sheds its leaves or 



whose above-ground parts die away on approach of winter or dry 



season. 

 Xnin'cate (L. truncatus, shortened) : ending abruptly. Fig. 252. 



