i873.] WINTER-FLOWERING ORCHIDS. 59 



flower-spike from 4 to G inches long, bearing four or five delicate 

 membranaceous flowers, more or less of a soft rosy colour. The 

 bases of the floral segments are marked with transverse bars of brown 

 or brownish crimson, lip white. It is a pretty little species, well 

 worth growing, and lasts from three to four weeks in flower. 



0. cordatum. — A distinct species found in Mexico and Guatemala, 

 and introduced to this country about 1837. In bulbs and foliage it 

 som^ewhat resembles 0. maculatum, but is very distinct from that 

 species when in flower. It bears numerous erect spikes of flowers 

 when well established, sepals and petals about 1 J inch long, lanceolate, 

 the apices being attenuate and often wavy. In colour they are very 

 remarkable, being heavily blotched with a dark brown (of peculiar rich- 

 ness in some varieties), on a ground colour of pale greenish yellow. 

 The lip is heart-shaped, of a white colour, blotched, and often margined 

 with brown, and furnished with a pubescent bilobed crest. 



0. roseum. — This species flowers very profusely during winter and 

 spring, lasting from three to four weeks in perfection. 



0. grande. — This is an old but at the same time truly magnificent 

 species, blooming during the autumn and winter months. This species, 

 together with 0. Insleayii, 0. citrosmum, 0. Krameri, 0. Phalsenopsis, 

 likes a few degrees more heat than the generality of Odontoglots, and 

 will be found to succeed better in a Cattleya house, or in an inter- 

 mediate temperature, rather than in the cool house. 0. Phalsenopsis 

 is especially sensitive to either extremes of temperature or stagnant 

 moisture. Well-established plants of 0. grande make fine subjects 

 for exhibition, and produce a profusion of their great golden yellow, 

 heavily blotched and barred flowers. No other Odontoglossum is so 

 effective as this when well grown, and it has the good (juality of re- 

 taining its gorgeous beauty for a considerable period. 



0. luteo-purpureum. — We have in cultivation several forms of this 

 plant which are frequently sold and named 0. radiatum or 0. Hallii. 

 It is a fine plant, and good specimens bear from twenty to thirty flow- 

 ers on a spike 4 or 5 feet long. A fine specimen of the " Hallii var- 

 iety " flowered at Ferniehurst, bearing thirty flowers, some of them 3|^ 

 inches across, on a branched spike nearly 5 feet long. Three smaller 

 spikes wRie borne by the plant at the same time. The sepals and petals 

 vary greatly in breadth in different forms, and are of a yellow colour 

 heavily blotched with brown. The lip is broad, with a white fimbriate 

 margin, the disc being blotched with brownish crimson : some varieties 

 of this plant are very richly coloured. 



0. Insleayii. — This is another fine winter-flowering species from Mex- 

 ico, somewhat resembling 0. grande in habit. It is a very free-flower- 

 ing species. Sepals and petals yellow, barred with brown. Lip of the 



