Type: Madagascar, Manongarivo (Ambongo). Coll. 
Perrier no. 1654! (P). 
Distribution: Madagascar, Mozambique. 
The long-acuminate, lorate leaves without a distinct petiole dis- 
tinguishes the plants of this species from the related O. quadriloba, 
O. sclerophylla and O. analavelensis. 
Oeceoclades petiolata (Schltr.) Garay & Taylor, 
comb. nov. 
Basionym: Mulophia petiolata Schltr. in Ann. Mus. 
Col. Marseille ser. 3, 1: 175, t. 18, 1913. 
Syn.: Mulophidium petiolatum (Schltr.) Schltr. in 
Fedde Rep. Beih. 33: 256, 1925. 
Lissochilus petiolatus (Schltr.) H. Perr. in 
Humbert, Fl. Madag. Orch. 2: 25, 1941. 
Type: Madagascar, Manongarivo (Ambongo). Coll. 
Perrier no. 478 bis! (P). 
Distribution: Madagascar. 
Vegetatively the plants of this species are practically identical with 
those of O. alismatophylia, but the shape of the lip is very different 
proportionately. From the related O. lonchephylila it differs in having 
a pandurate lip with three thickened veins in front of the calli. 
Oeceoclades quadriloba (Schltr.) Garay & Taylor, 
comb, nov. 
Basionym: MWulophia quadriloba Schltr. in Ann. Mus. 
Col. Marseille ser. 8, 1: 176, t. 12, 1918. 
Syn.: Hulophidium quadrilobum (Schltr.) Schltr. in 
Fedde Rep. Beih. 33: 256, 1925. 
Lissochilus quadrilobus (Schlitr.) H. Perr. in 
Humbert, Fl. Madag. Orch. 2: 30, 1941. 
Type: Madagascar, Manongarivo (Ambongo). Coll. 
Perrier no. 1696! (P). 
Distribution: Madagascar, Rhodesia. 
The unique structure of the lip in these plants is reminiscent of 
those belonging to the Asiatic genus Grosourdya. The vesicular, hang- 
ing spur is longer than the reflexed midlobe of the lip. 
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