VI 



PREFACE. 



5000 to 6000 feet. 



Pleurotliallis chamensis. 

 Stelis spathulata. 

 Epidendrum dichotomum. 



ceratistes. 



Lindenii. 



— tigriimm, 



Schomburgkia rosea. 

 Chondrorhyncha rosea. 

 Pilumiia fragrans. 

 Fernandezia longifolia. 

 Oncidium falcipetalum. 

 ' linguiforme. 

 Brassia glumacea. 

 Govenia fasciata. 

 Zygopetalum gx'amineum. 



4000 to 5000 feet. 



Masdevallia triangularis. 

 Warrea bidentata. 

 Mormodes Cartoni. 

 Triehocentrum maculatum. 



{Mean Temp. 65^). 



Cyrtopera Woodfordii. 

 Maxillaria seabrilinguis , 



. grandiflora. 



. melina. 



nigrescens. 

 luteo-alba. * 



Lycaste gigantea. 

 Anguloa Clowesii. 

 Scaphyglottis ruberrima. 

 Camaridium luteo-rubrum. 



purpuratum. 



Ornithidium sanguinolentum. 

 Cyrtopodium bracteatum. 

 Comparettia falcata. 

 Sarcoglottis picta. 

 Physurus rarifloras. 



{Mean Temp. 68^). 



Cleistes rosea. 

 Sobralia dichotoma. 

 Epistephium sessiliflorum. 

 Physurus Preslei ? 



3000 to 4000 feet. {Mean Temp. 71^). 



Epidendrum stenopetalum. 

 Cattleya Mossise. 

 Ghiesbreghtia calanthoides. 



Habenaria maculosa. 

 Lindeni. 



2000 to 3000 feet. {Mean Temp. 75^ ; Max. Temp. 80^ ; Min. Temp. 55^). 



Schomburgkia undulata. [ Burlingtonia granadensis. 



Odontoglossum hastilabium. | lonopsis pulcitiella. 



From this we learn that a species of Epidendrum is found 

 where the mean temperature of the year is about 40"^^ where 

 trees are wanting^ pastures only being founds and where it 

 occasionally snows. This would be incredible upon worse testi- 

 mony than Mr. Linden^ s^ if we did not know from Professor 

 Jamieson that one Oncidium (nubigenum) is found in Peru at 

 the height of 14^000 feet^ and rarely below it. Mr. Linden 

 tells us that his plant^ which grows at only a short distance 

 from eternal snow^ is covered all over^ flowers included^ with a 

 varnish, which is perhaps intended for its safeguard. It is 

 remarkable that all the Epidendrums, with one exception^ occur 

 above 5000 feet, and that they form a continued chain of species 

 up to the ground of E, frigidum. 



