200G 



* ONCiDIUM deltodieum. 



Triangular-lipped Oncidium. 



GYNANDRIA MOJiANDRIA. 



Nat. ord. OrchidacEjE, § Vande^. 

 ONCIDIUM. Suprii, vol. 13. fol. 1050. 



§ 1 . Sepala lateralia libera. 

 * * * Labelli lacinis laterales intermedia majores. 



O. deltoideum ; pseudobulbis oblongis compressis sulcatls 2-3-pbyllis, foliis 

 linearilanceolatis canaliculatis, scapo paniculate ramis multifloris flexuosis 

 divaricate, sepalo supremo unguiculato obovato lateralibus longioribus spa- 

 thulato-lanceolatis apice revolutis, petalis latioribus obovatis crispis, labello 

 deltoideo angulis rotundatis, crista tuberculata serie subduplici tuberculorum 

 juxta basin et quatuor versus apicem majoribus distlnctis biseriatis minore 

 interjecto, columnae alis maximis acinacifonnibus. 



O. deltoideum. Supra, vol. -fol. 



Omnes partes virides leviter glaucescentes. Panicula secunda, nutans, 

 in apice scapi sesquipedalis. Sepala et petala lutea. Labellum apice acu- 

 tiusculum refiexum. Crista e tuberculis hrevibus oblongis composita, Jeri 

 totum discum labelli occupans ; tubercula baseos interiora in circulum con- 

 jluentia unico centrali magis prominulo, exteriora in lineas duas interrxiptas 

 divergentes ordinata ; ultra hcEC versus apicem adsunt unum oblongtim in 

 ipso apice circuli et utrinque duo alia majora patentia et magis versus 

 apicem tendentia : Circulus et tubercula exteriora pallide Jlavescunt maculis 

 quibusdam sangtiineis interjectis. Aim columncE, in planta culta integer- 

 rimm, in spontanea denticulis quibusdam marginantur. 



I was very unexpectedly gratified at finding this rare 

 plant a few weeks since flowering in the greenhouse of Wm. 

 Joseph Myers, Esq. of Aighburgh, near Liverpool. It had 

 been sent him from Lima by John Maclean, Esq. a great 

 friend to science, now resident in that distant station. Mr. 

 Maclean probably received it from Mr. Mathews, who first 



• See folio 1050. 



