



above the sea, where a humid atmosphere was prevailing. Muravucu is about thirty mile? in a 

 N.N. IS. direction from Esmeralda," 



The genu a Diothonea differ* from lsochilu* only in having the li|> unit**! to the column* by uu 

 intervening membrane, mid it therefore hears the name relation to that genus, <w i* home lo Epidon- 

 dnim hy Encvelimm It may ihercforcbe regarded as cither a distinct genus, or a mere form of 

 Isochilus* The original specie*, however, collected by ilic late Colonel Hull in the valley of Lion t 

 on the western face of the Cordillera* of Pom, has a lip very different in form from the other 

 divisions of the perianth, and both have a strong double callosity at the base of the fore part of ihc 

 lip ; in the true species of Isochilus, on the contrary, the lip has either one tubercle only at thai 

 purl, or none at all 



Fig, I. represents the column and lip of thLs plant. 



Neither this nor the following species have yet appeared in our gardens. 



No. 2. 



MAXILLARIA EBURNEA. 



M. ctmrnca ; pscitdobulhis ovalis aulcatis monophyllis, lbliis lincari-oblongis ncutis 

 subcoriaceis in pctiolum caaaliculatum angustatis scapo orccto uaifloro 

 vagmato lougioribiiti, vaginis dislsmlibiis aculiuseiilis;, supalis explaimtis lale- 

 ralibus triaitgularihiis clongatis supremo petalisrpic lanceolate, labello ovato- 

 oblongo loviter crcmilato callo unico acute per medium et duohiis lsittrralibus 

 sejunctis muliA minoribus, cohunnfi npioo nncatfi cardine dentate. 



Tlii* plant is one of the most genuine Species of a genus that ttcm» to require reconsideration ; 

 but among whose numerous forms no good murks of division have hitherto been found* 



It must lie a plant of considerable beauty, for its flowers are nearly five inches from tip to tip of 

 the lower sepal*, and of the purest white. Some of the leaves in my wild specimen* are as much as 

 fifteen inches long, and are remarkable for the long channelled stalk into which they laper at their 

 junction with the psewdoduilbs ; llieir texture is more papery than leathery. 



Tin* nearest relationship of the plant appear* to bo with M. gnunlitlora. which is said to have 

 compressed 2-lcavcd pseudo-bulbs, and a lip plaited transversely at the base* 



ric. 2<i represents the column, with its lonjr foot, from which the sepals and petals have boon 

 cut away- Fig, 2b shews the Up with the three callosities upon its surface. 





