MR. R. A. ROLFE ON THE APOSTASIE X. 229 
who have the opportunity will turn their attention to it and 
collect more materials. 
There are one or two points of interest about the distribution 
of the group, though in the present imperfect state of our know- 
ledge they cannot be particularly emphasized. Thus, Neuwiedia 
is not represented in India proper or in Ceylon, but only in Indo- 
Malaya, including the Peninsula, with a single species in New 
Guinea. Two species occur in the little island of Penang ; and as 
two Apostasias also occur there, it is clear that this island has 
been better worked than many others. Again, Neuwiedia Lind- 
leyi being common to Penang and Borneo, and N. Curtisü to 
Penang and Sumatra, both should also occur elsewhere if looked 
for. The Philippine species of Neuwiedia, also the Apostasia so 
marked, are reported in the * Novissima Appeudix " of the third 
edition of Blanco's ‘Flora de Filipinas, but I have not seen 
specimens; and the species may not prove identical with the 
Javan ones with which they have been identified. If correct, 
however, each is common to Java and the Philippines, and there- 
fore should also occur elsewhere. Apostasia Wallichii occurs in 
Ceylon, in a limited district in India proper (vide infrà), in 
Penang, doubtfully in Java, and apparently again in New Guinea; 
so that here also much yet remains to be done. A. Lobbii is 
only known from Borneo (here also another undetermined species 
occurs, vide infra) ; while A. stylidioides is interesting as occur- 
ring beyond the range of any other species of the group, namely 
in Tropical Australia. 
ENUMERATION OF SPECIES. 
Subordo I. DIANDRZE *.—Stamina 2 vel 3, anther laterales 
semper perfecte, anthera postica (in Subordine Monandra solum 
perfecta) ssepius sterilis, varie difformis, rarius perfecta laterali- 
bus similis, rarissime omnino deficiens. Pollen semper simplex, 
siccum vel viscosum. Ovarium 3-loculare placentis axilibus, vel, 
in Cypripedii, 1-loculare placentis parietalibus. 
* Although in Neuwiedia three perfect stamens are present, it seems best to 
retain the old nomenclature, which represents at once one of the earliest and 
best characters for naturally subdividing the Orchidee. The terms Mon- 
andre and Diandre appear to have been first used by Salisbury, in 1796, in his 
* Prodromus Stirpium in horto ad Chapel Allerton vigentium, though of course 
in a far more restricted sense than at the present time. 
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