TILIA. 



THE ENGLISH FLOWER GARDEN. TRICUSPIDARIA. 839 



once generically named, comprise a few species 

 which, though interesting botanically, are not 

 at present of horticultural importance. The 

 species that are or have been in cultivation are 

 B. hitea from Peru and Chili, B. violacea, B. 



Tigridia pavonia alba immaculata. 



Van Houttei, B. atrata, B. curvata, B. bticci- 

 fe>-a, and B. Patscuaro(!}, all from Mexico. 

 Of the new species it seems to me that we 

 may expect most from 7\ Pringlei, which is 

 said to grow 1 8 ins. high and to have large 

 scarlet flowers. 



TILIA (Lime; Linden}. Mostly sum- 

 mer leafing trees and of northern and 

 temperate regions. The common Lime 

 is cut into fantastic and often ugly shapes 

 in French and Austrian and Dutch gar- 

 dens. It was, no doubt, the readiest tree 

 to hand in the old times when this fashion 

 was more common ; but if we sought such 

 effects now we have many trees that 

 would be better for this purpose than 

 the Lime, which, from its vigorous growth, 

 takes much mutilation to keep it in the 

 desired shape. By far the best effect of 

 the tree is when it is allowed to take its 

 natural shape, and its fragrance is often 

 welcome on the lawn. The " pleached " 

 alleys of old English gardens were often 

 made of this tree, but it is much easier 

 to get them now from various trees better 

 in colour and leaf, such as the fine leaved 



Acacias or graceful fruit trees like the 

 Japanese and other crabs, which, while 

 giving us the shade we seek, also give 

 beautiful flowers in season. Some of the 

 species of Limes are very handsome trees, 

 hardy, fine in form and leaf, and good on 

 lawn or in grove. 



The species are T. heterophylla (N. 

 America), americana (&Q.},pubescens (do.), 

 cordata (Europe), dasystyla (Orient), 

 erichlora, mandshurica (Japan), Miquel- 

 iana (Japan), mongolica (China), petiolaris 

 (Hungary), platyphyllos (Europe), Pod- 

 horsciana (Podolia), rubra (Tauria), semi- 

 cuneata (Siberia), tomentosa (Europe), 

 vulgaris (do.). An interesting fact in 

 connection with the Lime is, that while 

 the common and well-known Lime of 

 gardens is not a native of Britain, two 

 other species less known are natives of 

 Britain, viz., platyphyllos and cordata. 



TRACHELIUM (Blue Throatwort}. 

 T. cceruleum is a much-branched peren- 

 nial, i to 2 ft. high, bearing in summer 

 broad clusters of small blossoms, blue 

 in the type and white and lilac in the 

 varieties. It can be grown only in the 

 warmest situations in dry borders, rocky 

 banks, and old ruins or walls. It is an 

 elegant plant for vases, etc. Mediter- 

 ranean. Seed or cuttings. 



TRADESCANTIA ( Virginian Spider- 

 ivorf). Beautiful herbs, some quite 

 hardy, of which T. mrginica is by far 

 the best, and with its varieties repre- 

 sents all the beauty of the family. It 

 is 12 to 30 in. high, and has showy 

 purple-blue flowers in summer. There 

 are several varieties, one with double 

 violet, and one each with single rose- 

 coloured, lilac, and white blossoms. 

 These grow in any soil and are suitable 

 for the mixed border, margins of shrub- 

 beries, the rougher parts of extensive 

 rock-gardens, and for the wild garden. 

 Division. 



Trichonema. See ROMULEA. 



TRICUSPIDARIA. T. hexapetala is 

 a lovely flowering shrub from Chili, 

 which has flowered in the gardens at 

 Castlewellan several years, and appears 

 to be hardy there. It is planted in a 

 shady border near a large Yew hedge, in 

 peat, leaf soil, and loam in equal propor- 

 tions. It flowers twice a year, in the 

 spring and in autumn, the colour of the 

 flowers being a deep rich crimson. Being 

 near the sea there is very little frost in 

 ordinary winters, and the plant requires 

 no protection, but in a less favoured 

 climate it would be well to pot it and 

 winter it in a cool greenhouse. Syn. y 

 Crinodendron Hookerianum. 



