ONCIDIUM. 



89 



in the collection of Dr. Rogers, of East Grinstead, who exhibited 

 it at a meeting of the Royal Horticultural Society in November, 



ODcidium varicosum. 



1868, when it was generally recognised as one of the finest Oncids 

 ever seen in cultivation ; it has always been extremely rare. The 



Oncidium varicosum var. Rogersii. 

 (From the Gardeners' Chronicle.) 



specific name, from varex, " a swollen vein," was suggested by the 

 ring of varicose veins around the crest of the labellum. 



On. viperinum. 



Pseudo-bulbs ovoid, obscurely four-angled, an inch long, diphyllous. 

 Leaves linear-oblong, acute, 2 inches long, pea-green. Peduncles slender, 

 erect, 5 — 7 or more inches long, few flowered. Flowers about an inch 

 in diameter; sepals and petals small, much undulated, pale red-brown 



