106 PRESENT-DAY GARDENING 



ing Pilumna, the white, fragrant T. fragrans, and its variety 

 nobilis, representing that section. T. suavis is one of the 

 showiest species. All are worthy of a place in collections. 

 Intermediate house. 



Trichosma Trichosma suavis is a pretty, cool-house 

 species, with white, fragrant flowers. 



Trigonidium. There are several curious species of 

 Trigonidium, with the sepals usually developed and 

 arranged differently to Orchids generally. Intermediate 

 house. 



Vanda The genus is one of the largest and most 



interesting, and, like the other large genera, it may be 

 divided into several sections. The largest-growing and best- 

 known species are V. tricolor and V. suavis, which have 

 white or yellowish flowers, spotted with purple, and with- 

 out any distinguishing botanical feature between them. 

 V. ccerulea is one of the finest blue Orchids ; V. Sanderiana 

 one of the handsomest ; V. insignis, V. lamellata, V. Deni- 

 soniana, V. limbata, and V. Bensonii are all desirable kinds. 

 V. Kimballiana, V. Amesiana, and V. Watsonii form a 

 distinct section, with fleshy leaves and erect spikes of pretty, 

 white flowers, marked with rose in the two first, and requir- 

 ing to be grown, where possible, in baskets suspended in 

 the intermediate house. V. teres, V. Hookeriana, and their 

 hybrid V. Miss Joaquim, have erect stems, bearing terete 

 leaves, and fine, rose-coloured flowers. V. alpina, V. 

 cristata, and V. pumila are pretty, dwarf species. All are 

 generally grown together in the warm or East Indian 

 house, but it is an open question whether the keeping 

 of these plants and the Aerides and Saccolabiums con- 

 tinuously in the same house is not the cause of the un- 



