INTRODUCTION. 



Thread. See Filament. 



Thread- shaped, (filiformis) of the same thickness from top 



to bottom, like a piece of packthread ; like the leaves ol 



Fennel, the style of Crocus, or of Honeysuckle. 



Three-edged, (trigonus) or three-cornered ; a stem having 



three corners or angles, and the sides not flat. 

 Three-fibred, (trinervatus) having three veins or nerves, run- 

 ning from the base to the end of a leaf, without branch- 

 ing off. 



Three-lobed, (trilobatum.) 

 Thronging, (confluentia) assembled in close parcels, with 



intervening naked places. 

 Thyrsus, a cluster ; according to Linneus, is a panicle con- 

 tracted into an oval or egg-shaped form. 

 Tiled, (imbricatus) one leaf or scale partly covering another, 

 like the tiles of a house ; as the cup of dandelion or bur- 

 dock. 



Tip. See Anther. 

 Tomentose, cottony or downy. 



Tomentum, short wool ; a species of hoary or downy pubes- 

 cence, which covers the surface of many plants. 

 Tongue-shaped, (lingulatum) applied to express a thick fleshy 



leaf, somewhat in the shape of a tongue. 

 Toothed, (dentatus) when the edges of a leaf are set with 



little teeth, as in primrose. 

 Tooth-serrated, (dentato-serratum) when the edge of a leaf 



is set with serrated teeth. 

 Top-shaped, (turbinatus) nearly conical. 

 Torose, protuberating. 

 Torulose, a little swelling out. 

 Tortile, twisting. 

 Trailing stems, (procumbens) lying along upon the ground, 



and not sending out roots, as common Speedwell. 

 Transverse, crosswise. 



Trapeziform, the shape of a flat leaf, having four unequal sides. 

 Trebly-compound. See Triply compound. 

 Triangular leaf, stem, or stalk, having three sides, and three 



angles or corners. 



Triandria, from -rpcit, three ; and avr/p, a husband : the 

 name of the third class in Linneus's Sexual System, con- 

 sisting of plants with hermaphrodite flowers, with three 

 stamina or male organs. 



Triangularly spear-shaped, (deltoideus) leaves broad at the 

 base, and nearly triangular, but spear-shaped at the point. 

 Trichotomous, dividing by threes. 

 Tricoccous, three-celled, three-seeded, swelling out. 

 Tricuspidated, three-pointed. 

 Tridentaled, three-toothed. 

 Trijid, three-clefted. 

 Trigonal, three-cornered. 

 Trilobate, three-lobed. 

 Trilocular, three-celled. 

 Trinerved, three-fibred, three-ribbed. 

 Tripartite, with three divisions. 

 Triphyllous, three-leaved. 

 Tripinnated, triply winged. 



Triply compound leaves, (folia supra decomposita) are of three 

 kinds : 1. Double Twin-fork, (tergeminus) leaf-stalk, 

 with two leaflets at the end of each, and two more at the 

 division of the fork. 2. Triply three-fold, (triternatus 

 triplico-ternatus) the divisions of a triple leaf-stalk, again 

 subdivided into threes, and three leaflets at the end of 

 each subdivision. 3. Triply-winged, (tripinnatus triplico- 

 pinnatus) when the lateral ribs of a doubly-winged 

 leaf, have themselves other leaf-stalks with winged 

 leaves 



Tritjueter, with three flat sides, as the stem of the pansic 



Trispermous, three-seeded. 



Triternate triply threefold. 



Trivalved, three-valved. 



Trowel-shaped. See Triangularly spear-shaped. 



Truncated, lopped. 



Trunk, that part of the herb which rises immediately from 



the root, and is terminated by the fructification. 

 Trygynia, the name of one of the orders in several of tHte 



classes, having three pistils in each flower. 

 Tube, the lower hollow part of a flower with one petal ; 



opposed to unguis, the claw of a polypetalous flower. 

 Tubercle, (tuberculus) a little solid pimple. 

 Tuberculate, tubercled. 

 Tubulated, Tubulose, tubular. 

 Tuoerous root, (tuberosus) consisting of many roundinsr 



knobs, collected into a bundle, as the root of peony and 



dropvvort. 

 Tubular, (tubulosus) in the shape of a hollow tube, as the 



cup of the Privet, the blossom of the Honeysuckle, or 



the nectary of the Hellebore. 

 Tubular florets, are shaped like a hollow tube. 

 Tuft. See Cyma. 

 Tunicated, coated. 



Turbinated, top-shaped, nearly conical. 

 Turgid, swollen, turgid. 

 Turis, a voung unexpanded shoot, as is the Asparagus before 



it is gathered for eating. 



Twining, (volubilis) twisting round other bodies, and as- 

 cending in a spiral line. 

 Twin-fork, (bigeminus.) 

 Two-edged, (anceps) as the stem of Tutsan. 

 Two-rowed, (distichus) like the teeth in a double box or 



ivory comb, as in the leaves of the common fir. 



U&V 



Vagina, a sheath formed by a part of a leaf, distinct from 

 the sheath (spatha) which is a species of calix. 



Vaginans, sheathing. 



Vaginated, sheathed. 



Valve, (valrula) the different pieces that compose a capsule 

 are called valves ; thus, in Thornapple there are four, in 

 Loosestrife ten, in Jacob's Ladder, Daffodil, and Hya- 

 cinth, three. The petals and empalements that constitute 

 the flowers of Grasses are called valves ; thus, in the 

 Common Meadow-grass the calix or empalement is a 

 dry chaffy husk composed of two valves, and the blossom 

 is formed of two other valves. The mouth of the tube 

 of a blossom is frequently closed by several projecting 

 substances : thus, in the blossoms of Borrage and Ja- 

 cob's Ladder, the tube is closed by five of these sub- 

 stances, which are also called valves. 



Valvula, a little valve or opening : the external division of 

 a dry seed-vessel, as a capsule or pod, which splits when 

 the seeds are ripe for dissemination. 



Vane-like, (versatilis) turning about like a vane, as the an- 

 therse of geranium and crown imperial. 



J'anltrd, (fornicatus) like the roof of one's mouth. 



Veil, (calyptra) the calix of mosses covering the tips. It is 

 generally in a conical form like an extinguisher. 



Veined, (venosum) a leaf is said to be veined when its fibres 

 are branched. 



Venose, veined. 



Ventricose, distended ; bellying. 





