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ZYGOPETALON Mackatr. Mr. Mackay’s 
Z.YGOPETALON. | 
Class and Order. 
( Nat. Ord.—Orcuipex. Div. IV. Anthera terminalis mo- 
bilis decidua ; Masse pollinis demum cereacee. Br.) 
Generic Character. 
Petala xqualia, subsecunda, erecto-patentia, basi con- 
nata. Labellum explanatum apice emarginatum, disco 
tuberculo magno; basi inferiore obtuse calcarato ; Colum- 
na aptera. Anthera ovata, compressa, calceiforme, disco 
subtus affixa: loculis duobus subbivalvibus. Masse pol- 
linis due, ad basin ineequaliter bilobe, basi glandulose. 
Specific Character. 
Zyeoretaton Mackaii. 
