448 oechid-geower's manual. 



"with a long yellow tip, the disk with two pairs of falcate lateral 

 lobes, which are white and very long. — New Grenada. 

 Fig. — Xenia Orch., i. t. 71 ; Batem., Mon. Odont., t. 11. 



0. LondesboroTigliiainini, Rchb. f. — This is one of the most 

 distinct and brilliantly coloured of the Odontoglots. The 

 plant though epiphytal is deciduous, losing its ligulate acute 

 foliage in winter ; the pseudobulbs are oblong ovate, glaucous 

 green, farrowed in age ; and the flower scapes grow from 

 three to six feet in length, producing flowers towards their 

 upper end. The oblong sepals and ovate petals are con- 

 cave, wavy, yellow regularly cross-barred with reddish brown, 

 the basal markings arranged concentrically. The lip has a 

 long yellow claw, two conspicuous erect yellow auricles, 

 and a flat transversely reniform limb of a bright yellow, an 

 inch and a half broad, and very efi'ective. It produces its 

 blossoms during the autumn months. — Mexico. 



Fig.— Orchid Album, ii. t. 82 ; Floral Mag., 2 ser., t. 246. 



0. luteo-purpureum, Lindley. — The numerous varieties of 

 this magnificent plant have given rise to many names, but 

 most growers of Orchids are now satisfied that these represent 

 only varieties ; still, as such, they are well worthy of a place 

 in every collection. The typical form has thick oval com- 

 pressed pseudobulbs two to three inches long, ensiform leaves 

 two feet long, and flowers three inches or more across, in 

 racemes which issue from the side of the bulbs, and grow a 

 yard high. The sepals and petals are broadly lanceolate, the 

 latter fringed, all almost wholly covered by an oblong blotch 

 of bright chestnut brown, the margins and tips being yellow. 

 The lip is yellowish white with reddish brown spots, obovate 

 four-lobed and fimbriate, emarginate, the multifidly pectinate 

 crest being deep yellow. — New Grenada, altitude 7,000 to 

 8,000 feet. 



'ElG.— Batem., Mon. Odont., t. 17; Gard. Chron., 1865, 746, with fig. 

 (radiatum) ; Id., N.S., xxi. 585, figs, 114, 115. 

 Syn. — 0. hystrix, 0. radiatum. 



0. luteo-purpureum sceptrum, Rchb. /.—The royal or 

 sceptre-bearing variety of the preceding, and a plant of 

 wondrous beauty. The sepals are oval oblong, acuminated, 

 toothed and undulated, deep chestnut brown margined with 

 yellow ; the petals of the same form as the sepals, irregularly 

 lobed at the edges, yellow blotched with the same colour as 



