292. | THE ORCHID REVIEW, [OcTOBER, 1910. 
a connecting link between those two subtribes, but with limits not always 
quite so definite as could be wished, for there are here and there species 
offering exceptions to one or other of the characters. The three first genera 
are terrestrial, without fleshy pseudobulbs, although the base of the leafy 
stems often thickens into a hard tuber. The others are epiphytal, and 
usually, if not always, pseudobulbous. The leaves are generally plicate or 
with prominent parallel ribs, as in the two preceding subtribes, and the 
flowering scapes are leafless in all except Govenia. The only exception to 
the mentum is in Aganisia, which, however, is too closely allied to Zygo- 
petalum to be removed from the subtribe. The pollinarium has generally 
the stipes much more developed than in Cymbidiez.” ie 
As regards geographical distribution, Bentham remarked that with | 
three exceptions the genera were American, but as these exceptions have 
since been transferred elsewhere the geographical limitation is now com- 
plete. The exceptions were, Pteroglossaspis, now referred to Eulophiez, 
Cyrtopera, united with Cyrtopodium by Bentham, but now included in 
Eulophia, and Plocoglottis, a Malayan genus of about ten species now 
placed near Tainia in the tribe Epidendree. We may now consider the 
genera of Cyrtopodiez individually. 
Cyrtopodium is a genus ranging from Mexico and the West Indies to 
South Brazil, and contains about twenty species, of which C. Andersoni and 
C. punctatum are familiar examples. The fusiform pseudobulbs are some- 
what like those of Catasetum in shape, and the flowers are usually yellow 
and brown, and borne in tall panicles or racemes, the bracts being also 
sometimes coloured. Govenia, with a somewhat similar distribution, 
contains about ten species. The flowers are borne in erect racemes, and 
the leaf-sheaths have the curious character of being frequently tubular and 
somewhat inflated, forming flask-like receptacles for water. Thespecies are 
not often seen in cultivation of late years, but G. lagenophora is flowering 
at Kew at the present time. 
Zygopetalum may be taken as the type of a group of allied genera, 
several of which were united with it by Reichenbach. About twenty species 
of Zygopetalum proper are known, chiefly natives of Brazil and Guiana, 
several of which are very familiar in gardens, as Z. Mackayi, crinitum, 
intermedium and maxillare. Zygosepalum is very nearly allied, and 
contains about three species, natives of Guiana, Venezuela and North 
Brazil. They differ from Zygopetalum in the beaked anther, broad 
column wings, and in some other details. Z. rostratum is frequently met 
with in cultivation. Colax, which was included by Bentham in Lycaste, 
is much nearer to Zygopetalum in habit and structure. About four species 
are known, natives of Brazil. 
The next five genera, which Reichenbach united with Zygopetalum, 
