THE NURSERY-LIST 431 



Thunia. Orchidaceoe. 



As the form of the pseudobulbs suggests, this genus is easily 

 propagated by cuttings. These are made about 6 inches long and 

 inserted in pots of sand. After standing in an ordinary propagating- 

 frame or moist greenhouse for a short time, young growths will 

 appear at the nodes. When large enough, they are taken up and 

 potted in ordinary compost. Two years, at least, are needed for 

 them to attain to flowering size, but this is the best method when 

 a large number of plants are wanted. See also Orchids, page 372. 



Thymus (Thyme). Labiatce. 

 Increased by seeds and division. 



Thyrsacanthus (properly Odontonema). Acanthaceas. 



Increased by seeds ; also by greenwood cuttings under a frame. 



Tibouchina. Melastomacece. 



Handled by cuttings of the growing wood under glass. 



Tigridia (Tiger Flower). Iridacece. 



Increased by seeds, but generally by offsets from the corms. 



Tilia (Basswood. Linden). TiliacecB. 



Grown from seeds planted as soon as ripe or stratified and sown 

 in spring ; if kept dry over winter they will remain dormant till the 

 second year. Layers may be made, and cuttings employed, but the 

 named sorts are usually grafted in spring or budded in summer 

 on common stocks. Mound-layering is sometimes practiced. 



Tillandsia. Bromeliacece. 



Propagated mostly by suckers (offsets) ; sometimes by seeds. T. 

 usneoides is the " Spanish moss " of the South ; rarely propagated, 

 but may be grown from seeds or division of the moss. 



Tobacco. SolanacecB. 



Grown from seeds started in beds ; page 366- 

 Tococa (usually known as Sphserogyne). Melastomacece. 



Propagation by single-eye cuttings in January is a good method. 

 Split the stems, make single-eye cuttings ; shorten back the leaves to 

 within about 2 inches of the leaf-stalk ; leave about 2^- inches of 

 woody stem ; place firmly in sand of propagating-bed and cover 

 with glass ; pot in thumb-pots and keep close for a time. May 

 also be propagated by taking the base of the shoot with a piece of 

 the stem attached, rooting in a high moist temperature with shade. 



