ME. a. BENTHAM ON ORCHIDE-S!. 295 



from Sachalin, and Blume's section Platystylis of Malaxis, raised 

 by Lindley to the rank of a genus. Blume's Gastroglottis, only 

 known from the short character in the ' Bijdragen,' may also 

 possibly be a Liparis ; but the Gastroglottis rnontana, published 

 in the ' Xenia Orchidacea,' from the rude figure of Kuhl and 

 Van Hasselt, is certainly a very different plant, probably allied 

 to Bulbophyllum. 



Dendrochilum, Blume, is placed by Lindley next to Liparis, to 

 which the author's second section, including the D. glumaceum 

 (figured, Bot. Mag. t. 4853), appears to be very nearly allied, 

 differing chiefly in the long brachia to the column and the broad 

 membranous clinandrium. Blume's second section, however, has 

 in many respects the characters rather of the Dendrobieae. I 

 have therefore proposed to separate the first section generically 

 under the name of Platyclinis, Blume himself having given no 

 names to his sections. Microstylis commelynifolia, Zoll., from 

 Java, a very distinct plant, with something of the habit of the 

 above-mentioned Liparis ramosa, is certainly not a true Micro- 

 stylis, but, as far as I could ascertain from the single minute flower 

 I had to dissect, appears to be well referrible to Platyclinis. 



The very distinct genera Calypso and Aplectrum, both monotypic, 

 and Corallorhiza with about ten species, all northern and extratro- 

 pical, are trueLiparidese. There are also three other small or mono- 

 typic northern extratropical genera which, on account of their evi- 

 dent affinity in many respects to Corallorhiza, I should refer to the 

 same subtribe, notwithstanding some considerable differences in 

 their pollinary arrangements. Two of them, Tipularia andOreorchis, 

 differ from each other chiefly in the labellum, spurred in the former 

 and not in the latter ; both of them have their pollen-masses more 

 or less connected with the rostellum by a filiform stipes analogous 

 to that of Vandese ; but there is no gland detachable from the ros- 

 tellum, to which I often find the stipes remaining attached after the 

 pollen-masses have been removed by insects or otherwise, and I 

 sometimes find two only of the four pollen-masses adhering to the 

 stipes, the other two remaining in the anther-case and falling off 

 with it. The anther is described as two-celled in Tipularia and 

 one-celled in Oreorchis, and so I have found them in the few 

 flowers examined ; apparently the dissepiment dries up early in 

 the latter genus. This, however, requires further investigation in 

 living specimens. Both genera have the remarkable reflexed 

 capsule of Corallorhiza. The third anomalous genus of the 



LINN. JOUEN. — BOTANY, VOL. XVIII. Z 



