OBCHIDS OP MADAGASCAR. 513 



Eacemus elongatua ; flores saepius pauei ; 

 lobi medii labelli truucati divergent^; 



scapus gracilis rectus purpurascens. 



lobi medii labelli, rotuudati, approximati ; 



scapus flexuosus flexuosa. 



Paryiflor^:. Labellum trilobum vel integrum, 

 calcar brevi. 



Labellum trilobum, calcar clavatum ; 



lobi labelli subsequales truncati erenulati. Boryana. 

 lobus labelli uiedius longior, porrectus in- 

 teger lilacina. 



Labellum integrum rel subintegrum ; 



scapum hispidum hispidula. 



scapum glabrum ; 

 racemus cylindricus ; calcar conicum ... {Arnottioides.) 

 racemus laxus ; calcar cylindricum ; 



labellum lineare, curvum brevicornu. 



labellum flabellatum (parviflora.) 



§ Encynorchis. 

 Cxnoechis uis'IFLORA, Lindley, Genera $f Sp. Orch.Pl. p. 381. 

 Speciosa, tuberibus oblongis obtusis lanatis ; foliis radical ibus 

 linearibus lanceolatis acutis 5-8-uncialibus ; caule validulo, 8- 

 unciali, pedali et ultra, vaginis caulinis 2, lanceolatis acuminatis 

 ampliatis ; bracteis lanceolatis acuminatis ovarii dimidio vix 

 sequantibus ; floribus magnis paucis 2-4, rarius singulo; sepalis 

 ovatis obtusiusculis viridibus: petalis lanceolatis viridibus; labello 

 magno piano 4-lobo, lobis obtusis latis vinaeeo-purpureis; calcare 

 longo crassiusculo recto, apice incrassato, ovario subsequaute; 

 processubus stigmaticis elongatis porrectis augustis. 



Madagascar, LyalV. in Herb. Kew; Hihenberg 6f Bojerl 

 Near water, in open country, no perfume, Ankafaua, Deans 

 Cowan ! in Herb. Brit. Mus. 



The (specimen which Liudley described has but one flower, 

 whence the specific name ; but all the others that I have seen 

 have had from two to four, usually the latter. The flowers are 

 the largest in the genus next to C. grandijlora, Ridl., the lip 

 being 1 inch in length, with a diameter in its broadest part of 

 \ an iuch. The spur, as in others of the section, is straight and 

 cylindrical, the last third being dilated; it is from 1 to 1] inch 



