12 



It is also strictly an occidental division, saving the genus 

 Polystachya, unless we admit Appendicula and Cryptoglottis, 

 which are insular Indian. Those genera however require 

 further examination. 



I do not profess to be able of myself to settle at present 

 the true limits of what may be called the Maxillaridous divi- 

 sion of Vandese ; but, in order to assist others who may be 

 working in the Orchidaceous mine, I will just put down what 

 I at present think will be the genera to be referred to it. 

 The tabular form being the most convenient for study, I have 

 adopted it, printing in italics those genera which seem certain, 

 and in Romans such as require much further examination. 



MaxillaridtE. Sepala lateralia plus minus obliqua, saepius 

 majora, unde alabastrus hinc gibbus. Labellum columns 

 appressum, ecalcaratum. Columna semiteres, basi pro- 

 ducta. Pollinia 2-4 (-8 ?). 



[The genus Zygopetalum, whose lateral sepals are very 

 little oblique, joins this Division of Vandese to that of 

 Sarcanthidse, in consequence of its near affinity to 

 Eulophia in the last mentioned division.] 



* Labellum medio interruptum. Stanhopea, Houlletia, Peristeria, Anguloa 



(Cuitlauzina?). 



* Labellum continuum. 



a. Sepala lateralia divaricata incurva basi angustata; Govenia, Batemannia. 



b. Sepala lateralia ascendentia ; Zygopetalum. 



c. Sepala lateralia recta, saepius triangularia. 



II Pollinia 2 ; Acropera, Chcenanthe, Malachadenia. 

 II II Pollinia 8 ; v. 4 plura ; Appendicula, Cryptoglottis. 

 II II II Pollinia 4 ; V. 2 bHoba. 



X Flores regulares clausi ; Oinithidium. 



X X Flores regulares expansi; Trigonidium, Psittacoglossum, Stenia, 



Promencea, Warrea. 

 XXX Flores ringentes. 



1 . Caudiculee 2 ; Bifrenaria. 



2. Caudicula 1. 



^ Columna maxima navicularis, clinandrio cucullato. 



Huntleya. 

 ^ ^ Columna clavata, angusta, clinandrio nudo. 



G^f^ Glandula lunata, caudiculis brevissimis v. nuUis ; 

 Maxillaria, Dicrypta, Xylobium, Camaridium, 

 Siagonanthus, Scuticaria. 

 tSW(^^ Glandula ovata, caudicula brevissima, v. 0. 

 Scaphy glottis. 



Glandula minuta ; caudicula setacea. 

 Polystachya, Paphinia, Lycast 



