144 THALICTRUM-TILLANDSIA. 



THA-LICTRmi. 12—13. (^Ranunculacecs.) [From ?Aa?;o, to flourish.] 



dio'icvm, (meadow rue, w-r. M. 1]..) flowers dioecious; filaments filiform; 

 leaves about 3-ternate ; leafets roundish, cordate, obtusely lobed, glabr&us; 

 peduncles axillary, shorter than the leaves. 1-2 f. 

 pubes"ccns, (w. Au. %..) leafets woolly, lobed, margin revolute, finely pubes- 

 cent beneath. 



THEA. 12—1. (Meli(B.) [A Chinese name.] 

 bohe'a, (bohea tea, M. Vi.) flowers 6-petalled ; leaves oblong-oval, rugose. 



From China and Japan. 

 vir"idis, (green tea, T2-) flowers 9-petalled ; leaves very long-oval. Ex. 

 THERMIA. 10 — 1. {LeguminoscR.) [From Mermos, temperature ; a plant of warm climates.] 

 rhombifo'lia, (y. %..) leaves ovate-rhomboid, silky-pubescent beneath; sti- 

 pules leaf-like, round, ovate, oblique, shorter than the petiole ; flowers ra- 

 cemed. S. 

 THESIUM. 5—1. (^leagnt.) [FromaGreek word signifying garland.] 

 umbella'lum, (false toad-flax, w. g. J. %.) erect; leaves oblong; umbels axil- 

 lary, 3-5-flowered ; peduncles longer than the leaves. 9-15 i. 



THLASPI. 14 — 1. (Cruciferoi.) [From i/(too, to brealc, so called because it appears broken, j 

 bursa-pasto'ris, (shepherd's-purse, w. IVl. ©.) hirsute ; silicles deltoid, obcor- 



date ; radical leaves pinnatifid. 

 arven'-'se, (penny-cress, w. J. ©.) leaves oblong, sagittate, coarselv toothed, 

 smooth; pouch sub-orbicular, shorter than the pedicel; its wings dilated 

 longitudinally ; flowers in a raceme. 1 f. 

 tubero'sum, (Ap. ©.) flowers large, rosaceous; stem 4-5 inches high, simple, 

 pubescent; upper leaves sessile;' radical leaves long-petioled ; root tuber- 

 ous; pouch orbicular. 



THUJA. 19—15. (Coniferce.) [From ^Awore, odour, so called from its fragrant smell.] 



occidenta'lis, (American arbor-vitas, M. Vj-) '^'"^"ches ancipetal; leaves im- 

 bricated, in 4 rows, ovate-rhomboidal ; strobiles obovate. Mountains. A 

 small tree with very tough branches. Leaves resembling scales. 

 THYMUS. 13—1. (Labiatm.) [From ^AwOTa, odour.] 

 vulga'ris, (thyme, b-p. J. %) erect ; leaves ovate and linear, revolute ; flow- 

 ' ers in a whorled spike. 

 TIARELLA. 10—2. {Saxifraga..) [From <mro, an ornament for the head.] 



cordifo'lia, (mitre-wort, w. M. %..) leaves cordate, acutely lobed, dentate ; 

 teeth mucronate; scape racemed; petals with long claws; flowers in atsim- 

 ple terminal raceme. Shady woods. 8-10 i. 

 TIGARIA. 11—1. (Rosacem.) 



tridenta'ta, (y. Ju. Tj) leaves crowded towards the ends of the branches, 3- 

 toothed, villose above, hoary-tomentose beneath; flowers terminal, solita- 

 ry. S. 



TIGRIDA. 15—3. (Iride.m.) [So called from its spotted appearance, resembling a tiger.] 

 ensifor'mis, (tiger-flower,) spatha 2-leaved ; two outer petals longer than the 

 other four; leaves ensiform, nerved. Mexico. 

 TILIA. 12—1. (Tiliaceas..) [From pJeZea, the Greek name.] 



gla'bra. (bass-wood, lime-tree, y-w. Ju. It.) leaves round-cordate, abruptly 

 acuminate, sharply serrate, sub-coriaceous, glabrous; petals truncate at 

 the apex, crenate ; style about equalling the petals ; nut ovate. Large 

 tree. Wood soft and white. Leaves often truncate at the base. 



TILLANDSIA. 6—1. (Narcissi.) [Named from Tillandsius, professor of Medicine at Albo.] 

 utricnla'ta, (wild pine, bladder tillandsia, w.) leaves concave, broad, their 



base enlarged; panicle branching; flowers sessile; stamens longer than 



the corolla. 3 f. The leaves are often found containing nearly a pint ol 



water. S. 

 «s«eo't(ie5, stem gray, diffuse, filiform, pendulous, branching. Parasitic. From 



its peculiar appearance, suspended from trees to which it has fastened itself 



it is called old marl's beard. 



