ONCIDIUM. 



61 



petals broadly obovate-oblong, emarginate, undulate, bright canary. 



yellow spotted with red-brown in the centre ; lip clawed, the claw 



auriculate, the blade large, sj)reading, two-lobed, broadly oblong, bright 



yellow, the claw and crest spotted with orange-red ; crest consisting of 



a median triangular erect plate with two large teeth on the basal 



side, two smaller ones in front, and two minute ones on each side. 



Column wings short, quadrate, whitish. 



Oncidiuin Marshallianum, Rohb. in Gard. Chron. 1866, p. 682. £ot. Mag. t. 5725. 

 Fl. Mag. n.s. t. 285. Kegel's Gartenfi. 1879, t. 979. Williams' Orch. Alb. V. 

 t. 240. Lindenia V. t. 202. 



Oncidium Marshallianum. 



Introduced by Messrs. Low and Co. in 1865, through their 

 collector, Blunt, along with Oncidium crispum, from which it may be 

 distinguished when not in flower by its bright green pseudo-bulbs; 

 its habitat may therefore be assumed to be on the Organ Mountains, 

 near Novo Friburgo, in the Brazilian province of Rio de Janeiro, 

 whence it has since been frequently imported. It is nearly allied to 

 On, pectorale, introduced many years previously, but now rarely seen, 

 from which it differs chiefly in the form of its sepals and lip, and 

 especially in the crest of the last-named organ. Like most of the 

 members of the sub-section to which it belongs {Tetrapetala-macro'petala, 

 of Lindley), and of which it is one of the handsomest, it is found 

 to vary in the size and colour of its flowers, which usually expand 

 in May and June. 



