=Trillium= (American Wood-Lily, Indian Shamrock, Wake-Robin). _Liliaceæ_. Propagated by seeds and by divisions. =Triteleia= (Triplet Lily). _Liliaceæ._ Propagated by seeds and by offsets. =Tritoma.= See Kniphofia. =Tritonia=, Aletris, including Montbretia. _Irideæ._ Young plants are raised from seeds; but generally increased by divisions. =Trollius= (Globe Flower, Globe Ranunculus). _Ranunculaceæ._ Seeds. Divisions in early autumn or spring. The seeds should be sown fresh or a long time will be required for germination. =Tropæolum= (Nasturtium, Canary-bird Flower, Indian Cress). _Geraniaceæ_. Seeds, started in-doors or in the garden. Tuberiferous species by tubers or divisions of roots. Perennials sometimes by cuttings in a frame. =Trumpet Creeper.= See Tecoma. =Tuberose.= See Polianthes. =Tulipa= (Tulip). _Liliaceæ._ Seeds may be sown in boxes of light sandy soil, in late winter, and placed in a cold-frame. The next season the young bulbs should be planted in a prepared bed outside. Bulbels may be detached from established bulbs when they are lifted, and grown by themselves. This is the usual method. =Tulip-tree.= See Liriodendron. =Tupelo-tree.= See Nyssa. =Turnera.= _Turneraceæ._ Seeds, divisions and cuttings. =Turnip= (_Brassica_). _Cruciferæ._ Seeds, where the plants are to remain. =Tydæa.= See Gesnera. =Typha= (Bullrush, Cat's Tail, Reed Mace). _Typhaceæ._ Propagation may be effected by seeds sown in a pot plunged in water nearly to the level of the soil; or by divisions. =Ulex= (Furze, Gorse, Whin). _Leguminosæ._ Propagated by seeds or by cuttings. =Ulmus= (Elm). _Urticaceæ._ Usually propagated by stratified seeds. Layers are sometimes made, and suckers may be taken. The varieties are grafted on common stocks. =Unicorn Plant.= See Martynia. =Uvularia=, including Oakesia (Bellwort). _Liliaceæ._ Seeds; usually by divisions. =Vaccinium= (Swamp Huckleberry, Whortleberry, Blueberry, Bilberry, Cranberry). _Vacciniaceæ._