Me. o. bentiiam on obchideoE. 355 



might be made to include the great majority of northern tempe- 

 rate species with the lateral processes of the stigmatic appa- 

 ratus rarely much developed; and the more tropical species, with 

 these processes usually, but variously, extended, would form the 

 section JSuhabenaria, the flowers in the former usually smaller 

 than in the latter. Platanthera rotundifolia, Eichards., a plant 

 resembling in habit the H. {Platanthera) obtusata, Eichards., 

 which is also North-American, has been shown by A. Gray to be 

 a true Orchis. Eeichenbach refers also to Orchis Lindley's 

 Gymnadenia spathulata and G. Chusna from East India, both of 

 which have the habit of the Halenaria obtusata and the Orchis 

 rotundifolia ; but in our dried specimens I have failed to find the 

 pouch of the rostellum which I have very distinctly seen in the 

 specimens brought to me by A. Gray of Orchis rotundifolia. 

 Gymnadenia pinguicula, Eeichb. f., from East India, is evidently 

 allied to these species, but remarkable in the genus for the large 

 funnel-shaped spur of the labellum. The following, mostly mono- 

 typic, proposed genera must also now be included in Halenaria : — 

 Mecosa, Blume, from Java, has already been referred by Liudley 

 to Platanthera. Centrochilus, J. C. Schauer, from the figure and 

 description, must be the same as H. (Platanthera) tipuloides, 

 Lindl. ; and Ponerorchis, Eeichb. f., from Japan, appears from the 

 figure and description to be closely allied to that species, if not a 

 starved state of it. Mitosi Una, Bl., from Japan, referred by 

 •Miquel to Gymnadenia, is out if the small-flowered Halenaria?. 

 Dissorhynchium, J. 0. Schauer, belongs to a series of tropical- 

 Asiatic species which, with their long-stalked stigmatic appen- 

 dages, approach the Ponatece. Bilabrella, Lindl., two South- 

 African species, belongs to the same set of Bonatea-like Ilale- 

 narice, one of them apparently the same as Bonatea tetrapetala, 

 Lindl. Ate, Lindl., consists of two East-Indian species belong- 

 ing to a series of Halenaria?, of which II. Heyneana may be con- 

 sidered as the type. Barlcea, Eeichb. f. (different from Barlia, 

 Parlat.), is a small-flowered tropical-African species, formerly 

 referred by the author to Stenoglotiis, but allied to Ilabenaria 

 qttenuata, Hook. f. ; the habit is nearly that of Tinea, but the long 

 parallel stigmatic processes are those of various Halenaria? be- 

 longing to other sections. Macroccntrum, Philippi, is a Chilian 

 plant which ] have not seen ; but I find nothing in the detailed 

 description to distinguish it from the most ordinary series of tro- 

 ical Habenariai. Synmeria, Grab., is an Indian-Peninsular plant 



f 



