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exceeding 100 feet in length in its native habitats. The majority of 

 cultivated Orchids produce pseudo-bulbs, and are either evergreen, as 

 in the Cattleyas and Odontoglossums, or deciduous as in the Calanthes. 

 The stem-bearing Orchids of the Aerides and Vanda type, with the 

 leaves arranged in a two-ranked manner on each side of the stem, are 

 all evergreen, as also are the non-pseudo-bulbous Orchids of the Cypr'- 

 pedium type, except where these have tuberous roots, when they are 

 usually deciduous, as in the North American forms of that genus. 

 These peculiarities of habit must be all taken as indications of the 

 treatment required, and, as previously pointed out, the deciduous 

 species should all have a good period of rest. 



Some of the most useful genera to the cultivator are the fol- 

 lowing : Aerides, Saccolabium and Vanda, mostly small flowers, 

 soft tinted, in racemes, and fragrant ; Angrsecuru, principally white 

 or cream-coloured flowers, varying much in size, A. stsquipedale 

 being the largest ; Calanthe, rosy crimson and white, free useful 

 plants ; Cattleyas and LaBlias, showy Orchids, with large flowers 

 representing rich and soft tints of crimson, with white and gold 

 markings ; Ccelogyne cristata, white with yellow blotch, very useful ; 

 Oypripedium, variously coloured, not bright tints except some of the 

 C. Sedeni group, but free and useful ; Dendrobium, a handsome 

 genus with abundance of golden yellow tints, or crimson purple and 

 white in combination ; Dendrochilum, small flowers, but in D. glu- 

 maceum very fragrant ; Lycaste, white and crimson, very durable ; 

 Masdevallia, free useful plants, white, crimson, scarlet, and orange ; 

 Odontoglossum, chiefly white or yellow with brown spots and 

 markings ; Oncidium, a large number with bright yellow flowers ; 

 and Phaloenopsis, white and rosy crimson. These compribe the most 

 effective Orchids, but there are many other small genera, including 

 species of great beauty. The principal curiosities as regards floral 

 structure are found in the genera Bulbophyllum, Catasetum, 

 Cycnoches, Coryanthes, Gongora, Mormodes, and Kestrepia, which 

 present some extraordinary forms. The following will give some 

 idea of the number of species in the leading genera, a few of the 

 largest or best known being selected : Epidendrum 400, Pleuro- 

 thallis 850, Dendrobium 300, Oncidium 250, Stelis 150, Maxillaria 

 100, Spiranthes 100, Masdevallia 100, Eria 80, Odontoglotsuru 80, 

 Coelogyne 50. Cypripedium 40, Cattleya and LaBlia 20 each. There 

 are sixty-one monotypic genera that is, comprising only one species 

 each, and there is a large number with less than a dozen each. 



WHITE-FLOWERED ORCHIDS. White varieties of several Orchids 

 are now much in demand and realise high prices ; while sometimes the 

 ordinary type of the species may be only worth a few shillings, as in 

 Lycaste Skinned, the white variety alba is sold for as many guineas. Of 

 the cheaper white- flowered Orchids, such as Odontoglossum Alexandras, 



