1806 



TIARELLA 



extent except with moisture, coolness and a fairly rich 

 soil. The plant forces well and easily in a coolhouse for 

 early spring flowering. It is tenacious of life and gen- 

 erally easy to manage. 



M'- 



2510. Tiarellacordifolia(XK). 

 bb. Petals filiform-, inconspicuous* 

 uniioliata, Hook. Hardy perennial: Ivs. thin, rounded 

 or triangular, 3-5-lobed, the lobes crenate-toothed; stem- 

 Ivs. usually only 1, rarely 2-3: panicle loose; petals 

 small. W. Amer. — The lobing of the Ivs., according to 

 Bot. of Calif., varies so that it may pass into the next 

 species. 



aa. I/vs. S-foliolate. 

 trifoliata, Linn. Resembling T. unifoliata except in 

 having 3-foliolate Ivs. Ore. to Alaska. Also north- 

 western Asia. F w Barclay. 



TIBOUCHiNA (native name in Guiana). Melasto- 

 m&ceag, A genus of about 125 species, native to the 

 warmer parts of North and South America but mainly 

 from Brazil. Shrubs, herbs or climbers, with usually 

 large ovate or oblong, 3-7-nerved Ivs. and purple, rose, 

 violet or rarely white Ms., either solitary or in terminal 

 panicles. Fls. 5-merous, rarely 4- or 8-merous; calyx 

 ovoid or bell-shaped, the lobes as long as or longer than 

 the tube; petals obovate, entire or retuse; stamens 

 twice the number of the petals, nearly equal or alter- 

 nately unequal: ovary free: fr. a capsule, 5— 1-valved. 

 D.C. Mon. Phaner. vol. 7. 



semidecandra, Cogn. (Lasidndra maerdntha, Linden 

 & Seem. Pleroma macrdnthum, Hook. ). Fig. 2511. A 

 tender shrub: Ivs. ovate or oblong-ovate, 2-6 in. long, 

 round at the base, short-petioled, densely setose above, 

 villous beneath, not foveolate, 5-nerved or 3-nerved: 

 bracts broadly suborbicular, somewhat rounded at the 

 apex and shortly apiculate, margin not translucent : fls. 

 reddish purple to violet, often 5 in. across, solitary and 

 terminal or 1 fl. terminal and 2 in the upper axils on the 

 branchlet; stamens purple; style setulose. Brazil, { 

 B.M. 5721; 4412 (as P. Kunthianum). F.S. 23:2430. 

 Gn. 44:921. F. 18(18:193. l.H. 16:594. 



Var. floribunda is more suited to pot culture in pots 

 and flowers more freely when small than the type. 

 Lasidndra, or Pleroma spUndens, Hort., should be 

 compared with this. T. semidecandra is a plant of easy 

 culture that has been highly praised by several con- 

 noisseurs. Cuttings struck in April will give bushy 

 plants for fall and winter blooming. Handsome speci- 

 mens may be had by keeping the same plant two or 

 three years, training it to wires or stakes in a cool- 

 house where it has plenty of root room. The flowers 



TIGRIDIA 



last but a day or so, but new ones open up every day 

 and the flowering season lasts for several weeks. 

 Plants may also be used for summer bedding. They are 

 seldom out of bloom. The species is much esteemed in 

 Florida, where it makes a showy shrub 8 ft. high. It 

 endures a few degrees of frost with impunity, and even 

 if cut down it sprouts readily. 



elegans, Cogn. (Pleroma fleqans, Gardn.) Tender 

 shrub, 3-6 ft. high: Ivs. rigid, fragile, oblong or ovate- 

 oblong, 3-nerved: fls. purple, Wi in. across; calyx more 

 or less armed with rigid spreading bristles which are 

 thickened at the base. Brazil. B.M. 4262. P.M. 15:27. 

 F.S. 12:1212 (as Lasiandra elegans). — Once cult, by 

 John Saul. F w , Barclay. 



TICKSEED is Coreopsis. 



TICK TKEFOIL. Eefer to Desmodium. 



TIEDEMANNIA rigida, Conlt. & Rose, is a hardy 

 native, white-flowered swamp herb, growing 2-5 ft. 

 high from clustered tubers. It has pinnate Ivs. with 3-9 

 leaflets. This was offered in 1890-91 by a collector of 

 North Carolina plants, but is probably not in culti- 

 vation. For a fuller account, see Coulter and Rose's 

 monograph of the North American Umbellifera? (contrib. 

 U. S. Nat. Herb. vol. 7, No. 1, p. 194), 1900; also Gray's 

 Manual, and Britton and Brown's Illustrated Flora. 



TI-ES. Lucuma Bivicoa. 



TIGEK FLOWER. Tigridia. 



TIGEH LILY. Lilium tigrinum. 



TIGER'S JAW. Catalogue name for Mesembryav- 

 themum tigrinum. 



TIGRtDIA (tiger-like; referring to the peculiarly 

 marked flowers). Iriddcea. Eight or ten species of 

 cormous plants ranging from Mexico to Peru aud Chile, 



2511. Tibouchin 



(X %). 



and making very showy summer-blooming plants. 

 Bulbs tunicated. Stem erect, unbranched, a few inches 

 to 214 ft. tall, with a few narrow plicate leaves at the 



