32 



margine laevi. — • — All parts of tropical South America, 



east of the Andes. ^There is no doubt that C. macro- 



carpon is this plant, whose name should therefore, accord- 

 ing to the strict laws of priority, be changed. But the 

 name macrocarpon is unmeaning, and much incon- 

 venience would arise from the restitution of it. It is a 

 very common variable plant, sometimes even losing its 



spots, as in C. Wailesii from Honduras. Monstrous 



Forms, Monachanthus viridis, Lindl. no. 1. Bot. Reg. 

 t. 1752, from Brazil is a monster with no cirrhi to the 

 column, and the lip perfectly undivided. C. cristatum 

 L. no. 7- is another monster, as is proved, at plate 1951 

 of the Botanical Register. 



2. C. maculatum (H.B. K. 7. 157. t. 630.) ; " foliolis calycinis 



duobus interioribus maculatis, labello ciliato." Tur- 



baco in New Grenada. — — All that can be said about this 

 species is that it certainly is not the C. maculatum of our 

 gardens. At the time I referred the latter to it I was 

 not aware that it had been figured. Nothing like it in 

 a cultivated state has yet been seen. 



3. C. integerrimum (Hooker Bot. Mag. t. 3823. C. macula- 



tum Lindl. Bot. Reg. 1841. t. 62. Bateman Orch. 

 Mex. et Guat. t. 11. nee H. B. K.) ; sepalis petalisque 

 conniventibus, labello carnoso galeato basi inflexo late- 

 ribus suis invicem imbricantibus margine Isevi vel serrato. 



Guatemala. This is very nearly the same as C. 



tridentatum, from which it differs in its helmet-shaped 

 lip, having the lower edges brought together so as to press 

 upon the column, instead of being wide apart, and being 

 generally serrated, although sometimes smooth. It is 

 certainly not the species so named by Humboldt, which 

 was found near Turbaco in New Grenada. That plant 

 is represented with the labellum quite open, not con- 

 tracted and curved inwards near the column, and sur- 

 rounded by a broad plaited border, called in the descrip- 

 tion " ciliatum." 



4. C. planiceps (Lindl. in Bot. Reg. 1843. t. 9.) J sepalis 



petalisque ovatis conniventibus, labello carnoso galeato 

 rotundato compresso apiculato indiviso margine serrato. 



Spanish Main. Flowers green and yellow. The 



habit is that of C. integerrimum, tridentatum, and semi- 

 apertum, from the second of which it differs from its ser- 



