OXCIDIUAL 



73 



habitat. It closely resembles Onddium divancatum 

 in habit and aspect, but is distinguished from that 

 species by its differently shaped labellum, the crest 

 of which is entire (not lobed).* Like On. divaricatum 

 it is one of the most tractable of Oncids under 



cultivation. Oncidium puivinatuin 



(slightly diminished). 



On. pumilum. 



Pseudo-bulbs none. Leaves from a creeping rhizome, oblong, acute, 



2 — 4 inches long, rigid, erect. Scapes as long as or longer than the 



leaves, paniculate, the branches short, and the flowers small and crowded. 



Sepals and petals mmute, oblong-spathulate, obtuse, yellow spotted with 



red-brown ; lip tliree-lobed, yellow, the side lobes the largest, roundish 



oblong, the intermediate lobe sub-quadrate, truncate ; crest bipartite, tlie 



two parts divergent, each consisting of two parallel ridges. Column 



wings oblong, acute, decurved. 



Oncidium pumilum, Lindl. in Bot. Reg. t. 920 (1825). Id. Gen. et Sp. Orch. 

 p. 205. Id. Fol. Orch. Oncid. No. 106. Id. in Paxt, Fl. Gard. II. icon, xyl No 

 132. Bot. Mag. t. 3581. 



A curious little plant first cultivated by Dean Herbert at Spofforth, 



Yorkshire, in 1825, whither it had been sent from Kio de Janeiro 



by one of his correspondents who had found it growing 



on the trunk of Bomhax Ceiba near Botofogo. It 



has since been gathered in several localities in the 



neighbourhood of Rio, where it forms large tufts on 



the trunks of Crescentia and other trees. We are 



indebted to Mr. 0. 0. Wrigley, of Bridge Hall, 



Bury, Lancashire, for materials for description. This 



species should not be confused with Oncidium nanum, which has 



larger flowers with a different labellum and crest. 



Oncidium pumilum 

 (enlarged). 



On. pyramidale. 



Pseudo-bulbs ovoid, 1 — 2 inches long, compressed, diphyllous. Leaves 

 linear-ligulate, 5 — 8 inches long, dark dull green. Peduncles erect or 

 nodding, 12 — 15 or more inches long, panicled, many flowered. Flowers 

 an inch in diameter, bright canary-yellow with some red spots and 

 markings on all the segments ; sepals and petals reflexed, the sepals 

 linear-oblong, keeled behind, the lateral two free ; the petals broader 

 oval-o1jlong ; lip sub-panduriform, the basal lobes roundish-oblong, the 

 front lobe obcordate, emarginate ; crest whitish, consisting of about ten 



See page 31. 



