536 



ORCHID-GROWERS MANUAL. 



be distinguished by their small pseudobulbs, which bear a single leaf on 

 the apex, but these are surrounded by several sheathing herbaceous ones 

 at the base. The scape is radical and bears a long raceme, flowers small, 

 the lower sepals being connate and the lip clawed and quite entire. 



Culture. — These plants thrive well on blocks of wood having a little 

 sphagnum attached to their roots, or they be grown in small pans or 

 baskets hung up near the glass, well drained, using for soil peat fibre 

 and chopped sphagnum moss. They may be grown in the cool end of 

 the Gattleya house with a nice moist atmosphere, but in the summer 

 they may be grown in the warm end of the Odontoglossum house, 

 keeping them moist all the year roiind. 



N. ALBIDA, Klotzsch. — This plant is said to have been originally discovered 

 by Warscewicz in Central America many years ago, since which time it has been 

 found in various parts of South America and Mexico. It is a plant having 

 small compressed pseudobulbs and oblong obtuse coriaceous leaves which are 

 keeled beneath, slightly channelled above, deep green on the upper side, pale 

 green below; raceme some 6 or 7 inches long and densely flowered; flowers 

 white suffused with a tinge of lemon-yellow, having much the appearance of 

 Angraecum citratum. It blooms in the spring and early summer. — South 

 America; Mexico; {?) Central America. 



Yia.— But. Mag., t. 6311. 



N. BICOLOR, Lindl.- — Is a charming little plant with equitant leaves, scape 

 longer than the leaves ; raceme dense, flowers small ; sepals white, the petals 

 slightly shorter than the sepals, these are mauve coloured, bearing some bluish- 

 lilac spots near the base. It blooms very freely in the autumn months. — 

 Ouatemala. 



FiG.—Bot. Mag., t. 6609. 



OCTADESMI A. — See Laelia monophylla. 



Odontoglossum, mmbout, Bonpiand, et Kunth. 



(Tribe Vandeae, suhtrihe Oucidieae.) 

 This is undoubtedly the most popular genus of cool Orchids at the 

 present time, and is likely to increase in popular estimation, to which so 

 many magnificent additions have been made during the last few years that 

 it now contains some of the choicest and most useful decorative species in 

 cultivation. Natural hybrids have come to hand in large quantities and 

 have greatly puzzled Botanists, resembling as they do so closely some of 

 the existing species ; in this connection we have considered it best to 



