832 MB. G. BENTIIAM OX OECIIIDE^. 



differently shaped perianths on the same individual, and justifies 

 the uniting with the genus Vancta Cathcartii, Lindl., forming 

 Beichenbach's genus Esmeralda. I should also include in AracJi- 

 nanthe, Arrhynchium, Lindl. (Henanthera bilinguis, Beichb. f.), 

 and Armodorum, V. Breda (Renanthera Sulingi, Beichb. f.). 



Series 2. Columna in pedem product a. Labellum e calcaratumv. 

 calcar a basi remotum. — Seven genera, of which six are Indo- 

 Australian and one Mascarene. J?halcenopsis, Blurne, comprises 

 fifteen species from the Indo-Malayan region, and may be well 

 divided into two sections — JBlialaenopsis proper, with very broad 

 petals and the middle lobe of the labellum more or less distinctly 

 two-horned or divaricately two-lobed, and Stauroglottis, Schauer, 

 with the petals similar to the sepals or smaller and the middle 

 lobe of the labellum entire ; and in the section Stauroglottis may 

 also be included JPolychilus, v. Breda, with a remarkable fleshy 

 dilated rhachia to the raceme. Doritis, Lindl., with a remarkable 

 Dendroliam-shayed perianth and a peculiar habit, was originally 

 founded on a Cochinchinese plant, to which Beichenbach added 

 Lindley's Dendrobium bifalce from New Guinea; the specimens of 

 both are far from satisfactory, yet sufficient to establish the genus, 

 which might also include, though in a slightly different section, 

 Carteretia, A. Rich., from New Guinea, Aerides latifolia, Thw., 

 from Ceylon (from which Phalcenopsis Wightii, Beichb. f., from 

 the Peninsula, is scarcely specifically distinct), and Aerides 

 tceniale, Lindl., from Nepaul and Khasiya, making altogether a 

 natural and fairly characteized genus of five or six species. 

 Parish's Moulmein plant, referred by Beichenbach to his JPha- 

 Icenopsis Wightii, seems to me to be rather different, but the 

 specimen is insufficient for accurate determination. Hhyncho- 

 styles, Blume, two or three Indo-Malayan species, is a well- 

 marked genus as limited by Beichenbach, with the exception of 

 Vanda violacca, Lindl., which appears to me to be rather a 

 Saccolabium. Sarcochihis, B. Br. (JDendrocolla, Blume), is a 

 genus of about thirty species, widely spread over the Indo- 

 Australian and South-Pacific regions, in which the form of the 

 labellum, and of its dorsal gibbosity, upon which several genera 

 have been founded, varies from species to species. Blume pro- 

 posed three fairly natural sections founded on the inflorescence : — 

 1. Cuculla, which includes the genera Orsidice, Beichb. f., and 

 Thrixspermum, Lour. ; 2. Fornicaria, including Cylindrochilus, 

 Thw., and one species at least of Grosourdia, Beichb. f . ; and 



