206 THE ORCHID REVIEW. (JuLy, ror. 
generally admitted, are distinct, but very few of them are known in 
cultivation, and we cannot go into them in detail. Two or three small 
genera have since been described. A large number of Malayan repre- 
sentatives of the group are still very imperfectly known. 
The rest of the Sarcanthee are characterised by having a footless 
column, and the lip variously saccate or spurred. Eighteen yenera were 
recognised by Bentham, of which twelve are Asiatic, four African and two 
American. Most of the genera are well known in gardens, and in some 
cases large numbers of species have been discovered since Bentham’s time, 
and these are taken account of in the following notes. 
The Asiatic genera are as follows: Renanthera, with about ten Indo- 
Malayan species, and mostly brightly-coloured flowers, as seen in R. 
coccinea and the well-known R. Imschootiana ; Vanda, ranging from India 
and South China to North Australia, and containing about forty species, 
many of which are familiar in gardens ; Saccolabium, with a pretty similar 
distribution, and containing about 120 species, several of which are 
cultivated : Acampe, a genus of about fifteen species, mostly Indo-Malayan, 
with two or three outlying species in Tropical Africa and a few others in 
Madagascar; Sarcanthus, chiefly Indo-Malayan and Chinese, with about 
seventy species ; Cleisostoma, Indo-Malayan, and Australian, with about 
sixty species; Ornithochilus, an Indo-Chinese monotype; Tzenio- 
phyllum, a remarkable genus of about forty Indian, Malayan, and 
Polynesian species, nearly allied to Saccolabium but characterised by their 
leafless habit ; Diplocentrum, with two or three Indian species, and much 
resembling Saccolabium, but characterised by the double spur, and three 
or four other very small genera which are unknown or rarely seen in 
cultivation. The species abound in the great Malayan region, and many 
have recently been described. 
The African genera are as follows: Angrecum, widely diffused in Africa 
and the Mascarene Islands, with an outlying Philippine representative and 
another in China and Japan, and containing about 100 spécies, several 
being well known in cultivation; Listrostachys, African and Mascarene, 
and containing about eighty species; Mystacidium, with about fifty 
species, and an outlying representative in Ceylon; onia, with about five 
species, found in Madagascar and Mauritius, and Cryptopus, containing but 
-a single Mascarene species. 
The two American genera are Campylocentrum, ranging from South 
Mexico to South Brazil and Paraquay, and containing about thirty species, 
and Dendrophylax, a leafless Angrecum-like genus of five species, found in 
the West Indies and Florida. One species of the latter, D. funalis, was 
formerly referred to Angrecum, and is figured in the Botanical Magazine 
under the name of A. funale (t. 4295). 
