374 orchid-grower's manual. 



thirty species of the genus known, all found in Tropical or 

 Southern Africa. 



Culture. — These are terrestrial plants, and require to be 

 potted in fibrous loam, and to have good drainage secured, 

 as they need a liberal supply of water during the time they 

 are making their growth. As they come from a tropical clime 

 they require to be grown in a strong heat. This genus is much 

 neglected and despised by Orchid- growers, but though we have 

 not yet had the best species introduced to our gardens, or if 

 they haye been they have soon disappeared, some of those 

 within the reach of Orchidists are well worth attention, 



L. Horsfallii, Batem. — This is a magnificent plant, in habit 

 of growth resembling Phajus grandifolius. It has a fleshy 

 underground tuber, from which springs a tuft of lanceolate 

 acute distinctly stalked plaited leaves two to three feet long, 

 and an erect terminal flower scape twice the length of the 

 leaves, terminated by a dense elongated raceme of large and 

 beautiful flowers. The sepals are lanceolate, undulated, 

 reflexed, of a rich purplish brown, the petals are much 

 larger, white, with a delicate tint of rose ; the lip funnel- 

 shaped, purplish at the base, three-lobed, the lateral lobes 

 large, erect, convex, green streaked with purplish crimson, 

 and the middle lobe bluntly ovate, of a deep pucy purple, 

 with three white ridges on the disk running down to the base. 

 It was received by the gentleman whose name it bears from 

 Old Calabar. — Tropical West Africa. 



YlG.—Bot.Mag., t. 5486; Bate7n. 2nd Cent. Orch. PI., t. 121. 



L. roseus, Lindley. — A grand species of this group of ter- 

 restrial Orchids, having the stifi' erect leaves broadly lanceo- 

 late and plicately veined, and the flower scapes between three 

 and four feet high, terminated by a dense oblong raceme of 

 handsome lively coloured flowers, very distinct in character, 

 each produced from the axil of an ovate bract. The sepals are 

 spathulate in outline, concave, reflexed, of a rich deep 

 velvety brown, the large oblong apiculate recmwed petals 

 are of a deep rose colour, and the three-lobed lip, which is 

 roundish and longer than the petals, is also of a deep rose, 

 and bears a conspicuous golden crest of three undulated 



