Tab. 5743. 



ONCIDIUM MACKANTHUM. 



Large-jloivered Oncidium. 



Nat. Ord. Orchide^. — Gysandiua Monamkia. 

 Gen. Char. {Vide supra, Tab. 4148.) 



Oncidium (Microchila) macranthum ; pseudobulbis ovoideo-ampullifor- 

 niibus leviter sulcatis, foliis lanceolato-lorifbrmibus acuminatis strjctis, 

 floribus niaximis, sepalis unguiculatis orbicularibus basi cordatisunrlu- 

 latis obtusis, petalis sequalibus conformibus sed unguibus brevioribus, 

 labelli parvi crassi hastati lobis lateralibus deltoideo-ovatis acuminatis 

 cornutis intermedio elongato-triangulari apice angustato linguifornii 

 acuto, crista? lobis 3 omnibus 2-coruutis, cornubus recurvis, columns 

 alis rotundatis. 



O.NX'iBiuir macranthum. Lindl. Gen. et Sp. Orchid '. p. 205 ; Folia Or- 

 chidacra, Oncidium, p. 4 ; et in Paxt. Fl. Gard. v. 2. p. 126. 



Truly described by Lindley as a " magnificent species ; " 



one plant of it, indeed, is enough to ornament a house of 

 considerable dimensions. It appears to be not uncommon 

 in Pern and New Granada, there being many specimens of 

 it in our Herbaria. It was first described from specimens 

 collected by the celebrate! Peruvian travellers, Ruiz ami 

 Pavon, and preserved in Lambert's Herbarium, and which 

 were labelled as from Guayaquil. This is, however, no doubt 

 an error, as it is a mountain plant, and, like most of its con- 

 geners, prefers a cool rather than an intermediate house. 



Professor Jameson, of Quito, gathered it on the Andes at 

 7000 feet, Hartweg at the foot of Tangnragua at 14,000 feet, 

 and Matthews in Peru, the exact locality not known. The 

 superb specimen here figured flowered at the Earl of Londes- 

 borough's in the spring of this year, and it shortly afterwards 

 flowered at Mr. Witch's establishment. The blossoms re- 

 main in perfection for several weeks, which renders it a pe- 

 culiarly valuable plant for ornamental purposes. 



Descr. Pseudobulbs ovoid or flagon-shaped, three inches 



DECEJTBE! 1 ST, L868. 



