Tab. 6982. 

 ONCIDIUM Jonesianujt. 



Native of Paraguay. 



Nat. Ord. Obchide.e. — Tribe Vandeje. 

 Genus Oncidium, Sicartz; (Benth. et HooJc.f. Gen. PI. vol. iii. p. 562:) 



OsciDirii (Teretifclia) Jon^sianvm ; folio in pseudobulbo parvo solitario teret 

 carnoso sensim acuminato uni-sulcato, racemo e pedunculo pendulo adscen- 

 dente, pedunculo rachique rubro-purpureo, floribus amplis, sepalis petalisque 

 subsequalibus tubunguiculatis oblongis obtusis undulatis pallide viridibus 

 rubro-purpureo maculatis, labelli lobi.s lateralibus parvis oblongo-rotundatis, 

 • auran tiacis, disco inter lobos incrassato cristato, tenninali amplo subungui- 

 culato latiore quam longo, transversim oblongo marginibus crispatis albo basi 

 sanguineo maculato, disco nudo, coluninas alis auriculaetormibus oblique ovatis 

 asceudentibus. 



Reichh.f. in Gard. Chron. vol. xx. (1881) p. 781 ; Warner and Williams Orchid 

 Album, t. 183; Lindenia, t. fe2 ; lttichenhachia, p. 47, t. 21. 



This is by far the handsomest species of the small group 

 of the genus Oncidium (containing about half-a-dozen 

 species) to -which it belongs, and of which the type may be 

 considered to be the long-known 0. Geholleta, Swartz, of 

 the Spanish Main. 0. Geholleta is figured by Lindley in the 

 Botanical Register (Tab. 1994), and is supposed to be the 

 Ejpidendron Geholleta of Jacquin's " Selectarum Stirpium 

 Americanarum Historia," t. 131, f. 2, published in 1763 ; 

 though, as Dr. Lindley remarks, the fact of Jacquin's 

 not having figured or described flower or fruit of his 

 O. Geholleta renders the identification doubtful. 0. 

 Jonesianum is a much larger-flowered species than 0. 

 Geholleta t which has an erect branched glutinous panicle 

 of yellow flowers. Of the other species of the group, 

 only one has been figured, the 0. stijjitatum of Lindley, 

 from Panama, to which that author refers his subsequently 

 published 0. lacerum (Bot. Reg. 1846, t. 27), also a pani- 

 culate yellow-flowered species ; this latter and the Mexican 

 0. Ion g if o Hum (reduced subsequently to a variety of 0. 

 Geholleta) he regarded as the handsomest species of the 

 genus. From all these, and probably from all typical 



FEB. 1st, 1888. 



