358 MB. G. 15KNTIIAU OX OBCHIDEJE. 



zodium, Liudl., contains about tea species, well distinguished 

 from Disa by the habit and by the position of the stigma. 

 Pcnthea, Lindl., seven or eight species, united by Harvey with 

 Disa, appears to differ constantly from that genus in the want 

 of any spur to the dorsal sepal. Brownleea, Harv., has also the 

 dorsal sepal without any spur, but a very concave or broadly sac- 

 cate labellum and a stigma somewhat different from that of Disa. 

 Forficaria, Lindl., is only known from a single specimen of Drege's 

 in Lindley's herbarium, which, as far as I can tell without spoiling 

 the specimen, does not seem quite to agree with the analysis 

 sketched by Liiidley. Brachycorythis, Lindl., four or five species, 

 is readily known by its habit, and differs from Schizodiutn by the 

 want of the spur to the dorsal sepal. Schizochilus, Sond., four 

 species, has been united by lieichenbach with Brachycorythis ; but 

 the habit is very different, and the spur of the labellum is indepen- 

 dent of the concave unguis of Brachycorythis, which also exists 

 more or less in Schizochilus above the spur. Plafycoryne, 

 E-eichb. f., is a single Madagascar species, differing from Penthea, 

 as Schizochilus does from Brachycorythis, in the spurred labellum. 

 Subtribe 4. Cobycieje. — In this subtribe the anther is usually 

 more or less reflexed from the column, as in Disese ; but the 

 labellum, adnate the whole length of the column, is produced 

 between the anther-cells and beyond them into a variously formed 

 appendage. The stigma, usually pressed between the labellum 

 and the rostellum, becomes transverse or two-lobed. There are 

 four undisputed genera : — Pterygodium, Swartz, including Om- 

 matodium, Lindl., about ten species ; Dispcris, Swartz (Dryopeia, 

 Thou.), about twenty species ; Corycium, Swartz, about ten spe- 

 cies ; and Ceratandra, Endl., seven or eight species. All four 

 are South African, one only, Disperis, also represented by a few 

 species in tropical Africa, Madagascar, and East India. 



Tribe 5. Cypbipedie^e. 



The four genera constituting this tribe differ so strikingly 

 from the rest of the order in their androecium, that they have 

 been proposed as forming one or two distinct natural orders. 

 Now, however, that they are better known, they are found to be 

 too closely connected together not to be united in a single tribe ; 

 and the importance of the single character which separates them 

 from Orchidese generally has fallen so much in estimated value, 

 that they have by common consent been reunited with that order 



