334 ME. G. BENTHA.M ON ORCIIIDEJK. 



and certainly appears to connect these genera. The polliuarium 

 affords no marked character to distinguish them. 



Series 3. Columna scepissime apoda. Labellum basi calcaratum. 

 — I would here include sixteen Old-World and two American 

 genera. Renanthera, Lour. (JVephranthera, Hassk.), five Indo- 

 Malayan species, has the very spreading perianth of Vanda ; but 

 the lateral sepals are usually longer and closely parallel or 

 united under the labellum, especially in the typical R. coccinea, 

 Lour., and R. matutina, Bl. In R. micrantha, Bl. (R. elongata 

 and R. matutina, or Saccolablum reflexum, Lindl.), and two or 

 three allied species, the character is less marked, but sufficient 

 to retain them in the genus, with which they agree in other 

 respects. Vanda, Br., as now limited, has about twenty Indo- 

 Malayan species, one of them extending to Australia. Among 

 the excluded species, Blume's section Fieldia now forms the 

 above-mentioned genus Stauropsis ; and V. densiflora, Lindl., his 

 section Anota, must be restored to Saccolabium, in which genus 

 it was already known as Saccolabium giganteum, Lindl. Saccola- 

 bium, Blume (a name needlessly altered by the author to Sacco- 

 chilus), including Robiquetia, Graudich., Ceratochilas, Blume, 

 Gastrochilus, Don, and probably also Omoea, Blume, but ex- 

 cluding Rhynchostyles and Ornithochilus, becomes a fairly natural 

 and well-characterized genus of about twenty species from the 

 Indo-Malayan region. We have distributed them into six series, 

 chiefly from the form of the perianth, and especially of the 

 labellum. (Eceoclades, Lindl., has also been rightly referred by 

 Reichenbach to Saccolabium, as to most of the species. (E. tenera, 

 Wight, appears to be specifically identical with Saccolabium 

 brevifolium, Lindl. (E. maculuta, Lindl., is referred by Reichen- 

 bach to Eulophia. (E. falcata, Lindl., is an Angrcecum. Sacco- 

 labium filiforme and S. roseum, Lindl., have been figured by 

 Wight as species of Sarcantlius, and confounded by Thwaites 

 with Schcenorchis juncifolia, Blume, of which they have the 

 habit, but they have all the characters of true Saccolabium ; Sac- 

 colabium acuminatum, Thw., is, however, a true Sarcantlius, and 

 specifically the same as S. peninsulare, Lindl. Saccolabium Hillii, 

 F. Muell., is rather an Ornithochilus. S. densiflorum, Lindl., 

 referred by Reichenbach to Sarcantlius, appears to me to be a 

 Cleisostoma. S. lineolatum, Thw., is Cleisostoma maculosum, 

 Lindl. 



Vncifera, Lindl., two Khasiya species, Acatnpe, Lindl , eight 



