411 



number 280 species, or just over half, are considered endemic, 

 though it is probable that when the adjacent parts of the 

 Archipelago have been better explored the proportion may be 

 considerably modified. The area covered is not defined, but 

 apparently includes the Peninsula from the northern boundary of 

 Ligor, with the islands of Penang, Langkawi, Singapore, and a few 

 others lying close to the coast of the Peninsula. 



_The arrangement followed is substantially that of Bentham and 

 Hooker's Genera Plantarum, with the exception of the exclusion 

 ot the Apostasiaceae. There are several modifications for example, 

 the sub-tribe Erieae is abolished, Eria and Phreatia being referred 

 to Dendrobieae, and Spathoglottis to Bletieae. The latter tribe is 

 enlarged by the inclusion of Ghrysoglossum, Gollabiwn, Ploco- 

 glottis, Spathoglottis, Galanthe, Arundina and Dilochia, which 

 were scattered in four different sub-tribes in the Genera 

 Plantarum. Agrostophyllum and Ceratochilus are transferred 

 from Goelogyneae to Dendrobieae. Geodorum, Thecostele and 

 Polystachya are removed from Gymbidieae—the first to Eulo- 

 phieae, the second to Notylieae, and the third to a new sub-tribe, 

 Polys la chyeae, in which the anomalous genus Leucolena, Kidl., is 

 now included. Podochilus (including Appendicula), Thelasis and 

 Oxyanthera are separated from Notylieae as sub-tribe Podo- 

 chilineae. Of the ,tribe Neottieae only two divisions are recog- 

 nised, Listereae »»> • idyereae, the former absorbing Vanilleae 

 and Arethuseae and the latter Gorymbieae, while two Indian 

 genera included by Bentham in Diurideae are divided between 

 them, Neottieae taking (Jorysanthes, while Gryptostylis goes into 

 Goodyereae. 



Two new genera appear here, Podophyllum and Ascotainia, the 

 first based on Agrostophyllum paucillomim, Hook, f., and Eria 

 ininiitiflora, RidL, and the second on Tainia penangiana, Hook.f. 

 The latter genus is said to include two other species not belonging 

 to this Flora, namely, T. Hookeriana, King & Pantling, and 

 T. viridifusca, Lindl.. Dendrobium is the largest genus, of which 

 73 species are enumerated, and this is closely followed by Bulbo- 

 phyllum (including Girt hopetalum) with 68, Eria with 49, and 

 Saccolabium (including Cleisostoma and Sarcanthus) with 3». 

 Goelogyne has 21 species and Oberonia 20, while no fewer than 

 %% genera are represented by only a single species. 



The union of Sarcanthus and Cleisostoma with Saccolabium, 

 though not made for the first time here, invites some comment, 

 for Mr. Ridley still utilises them as natural sections of the larger 

 genus, apparently without taking into account the difficult} ot 

 separating Saccolabmm from Angraecum by absolute characters ; 

 he also retains Acampe. which had been united with Saccolabium. 

 In fact there seems to be a modern tendency to excessive splitting 

 on the one hand and undue agglomeration on the other-even 

 within the limits of the same work-and the latter sometimes 

 tends to "chaotic agglomerations of forms under a common 

 generic name." 



. A few minor details may be pointed out, Dendr^iumM- 

 housieanum, Wall, is now well-known to be D. pulcheltum 



300 1 8 



D 



