ORCHIDS OF MADAGASCAR. 



127 



He2)ala luteralia lauceolata subfalcata ; labellum brevissimum, lobo 

 medio erecto liueari clavato ; columna brevissima ; anthera in 

 dorsam reflexa, apicibus breviiisculis. 



Imerina, Dr. Fox, 



This plant belongs to a small South-African genus not hitherto 

 recorded from Madagascar. The present species is most closely 

 allied to B, ccerulea^ Harv., differing notably in the petals being 

 adnate to the upper sepal for the best pai*t of tlieir length. The 

 petals are not attached by the margins as is usual in a galea 



formed o£ tbe sepals and petals, but by their backs; so that on 

 tlic inside of the galea the edges of the petals are seen in the form 

 of free ridges. The flowers appear to have been blue. 



Plattcortne Pertillei, Seiclih.f. Specimens from Baron, 

 nos. 4545, 4579, agree very well with plants from Perville in 



4 



Herb. Kew, and with Professor Eeichenbach's description ; but 

 I cannot find any second lobe to tlie petals, as mentioned in the 

 * Genera Plantarum.' 



DiSA TK-CARNATA, LindL " Light red, with yellow spots. 

 Damp banks, Ambatovory." Dr. Fox. 



DiSA BucHEXAYrA^'A, Kranzlin = Sat} rium calceatum, mihiy 

 was obtained at Ankeramadinka by Dr. Fox. 



Arxottia l]yER^rIS, S, Moore. Andrangoloaka, Dr. Fox. This 

 seems identical with the Mauritius species. It has not hitherto 

 been recorded for Madagascar. 



Professor Eeichenbach, in 'Flora/ 1885, p. 537, refers Mon o- 

 chilus gymnochiloides, Eidl., to the genus Cheirostylis, under the 

 name of C. gymnoclnloideSy'Sie\c\\b. f. 



DispERis TRiPETALorDEA, Lindh, has been obtained in Central 

 Madagascar by Mr, Baron, no. 4288, It has not been hitherto 

 recorded for the island. 



