844 MR. G. BKNTHAil ON OUCHrDEJE. 



but without giving any character, and it included the Spiranthes 

 adnata. Sprengel further extended it to the very different 

 Japanese spurred species of Cephalanthera. 



Series 2. The twenty-one genera of this series are, with the 

 exception of a few series of Goodyera and Physurus, all tropical 

 and limited to the Old World. The pollen is generally if not 

 universally sectile, and most frequently the odd sepal and the 

 petals are connivent in a galea over the column. They have for 

 the most part been so admirably illustrated by Blume as to 

 require but few observations beyond tbe bare enumeration under 

 the following heads, in the order which we propose to adopt for 

 the ' Genera Plantarum.' 



1. Labelhim with a poach or spur at the base, prominent between 

 the lateral sepals. — Physurus, ~L. C. Rich. (LJrythrodes, Blume, and 

 Microchilus, Presl) , has about twenty species, all tropical, but 

 American as well as Asiatic, and should, I think, include as a 

 section Queteletia, Blume (Orchipedium, V. Breda), chiefly dis- 

 tinguished by the forward inclination of the perianth ; the 

 American species do not appear to afford any general character to 

 separate them from the Asiatic ones, although the nature of 

 their pollen may require further investigation. P. glandulosus, 

 Lindl., is a Cystorchis. Anocctochilus, Blume, including Chryso- 

 baphns, Wall., has about eight Indo-Malayan species, to the ex- 

 clusion of A. lanceolatus, A. grandijlorus, and A. Jlavus, Lindl., 

 A. Jauberti, Gaudich., and A. longiflorus, Keichb. f., which all 

 belong to Odoniochilus. A. albolineatus, Beiehb. f, appears to be 

 identical with A. brevilabris, Lindl. Vrydagzenia, Blume, has 

 eight known species from the Malayan and South-Pacific regions, 

 and includes Ancectocltilus sandicicensis, Lindl. In Cystorchis 

 Blume, the two typical species from the Archipelago have two 

 large vesicles at the base of the labellum, which arc said to be 

 wanting in C. obscura, Blume, and are certainly deficient in 

 JEtheria fusca , Lindl., from the Himalaya, which has all the other 

 characters as well as the habit of Cystorchis and not of ILstaria. 

 Herpysma, Lindl., is a single Himalayan species, remarkable for 

 the long spur of the labellum, and the long rigid caudicles of the 

 pollen-masses ; the habit of the plant closely resembles that of 

 Myrmechis. 



2. Labelhim spurless, or the short protuberance included in the 

 base of the lateral sepals. — In the first two of the following genera 

 the pollen-masses are affixed to a long stipes descending from the 



