THE ORCHID REVIEIW. 33 
pointed out the importance of the valvate or imbricate sepals in separating 
certain groups of Orchids, and recently called my attention to its probable 
extension to this particular group, which led me to examine a series of 
buds, with the result above mentioned. This gives an additional character 
for separating the American species with a three-celled ovary, which I have 
contended were not naturally united with the Old World species with 
unilocular ovary. Lindley, in 1842, remarked: ‘ There is something in the 
habit of the Indian Lady’s slippers so peculiar that it was for a long time 
thought that they would be found to possess characters to separate them 
from their associates’ (Bot. Reg., XXVIII., sub. t. 17), and it is un- 
fortunate that the character was not discovered sooner, when the change 
of name would have caused less inconvenience. The character is very 
marked, for in every species which I have been able to examine in the 
proper condition the dorsal sepal is invariably folded within the lateral pair, 
and the bud is laterally compressed, while in the other three genera the 
bud is globose. It is rather curious that the first three genera should agree 
in having valvate sepals, and the last three in having fusiform non- 
crustaceous seeds. 
4. SELENIPEDIUM. 
A genus of three species found in Guiana, Brazil, and Central America. 
They are tall, reed-like plants, with a terminal raceme of small flowers, and 
the seeds globose, as in Apostasiez, or in Vanilla. The first two species 
have fragrant fruits, and are used in the same way as Vanilla for flavouring 
purposes. The species have retained the general habit of Apostasiz, as 
well as the three-celled ovary and crustaceous globose seeds, in which 
respect they differ from all the rest of the Cypripediez. The remainder of 
the species referred here by Reichenbach are transferred to the following 
genus. : 
Key to the Species. 
Leaves narrowly lanceolate < . 1. §. Chica, Rchb. f. 
Leaves broadly lanceolate. 
Inflorescence pubescent, staminode lanceolate : 
2. S. Isabelianum, Rodr. 
i i lliform-ovate 
Inflorescence pilose, staminode tru pe i 
5. PHRAGMIPEDIUM. ee ee 
This genus comprises Selenipedium section © ‘Acaulia coriifolia of 
Reichenbach, and Paphiopedilum section Phragmopedilum of Pfitzer, 
about ten species being known. It has the ovary of Selenipedium, but 
differs in habit, the conduplicate coriaceous strap-shaped leaves, the flower 
articulated above the ovary and deciduous, and the fusiform sends Fi oe 
Paphiopedium it differs in the three-celled ovary and valvate sepals. e 
