ONCIDIUM. 93 



tliree-lobed, the side lobes linear, incurved, yellow, the front lobe roundish, 



emarginate, red-brown ; crest consisting of a large number of tubercles 



running down the centre from the base to the front lobe. Column with two 



large incurved wings and a small apical hood. 



Oncidium Widgrenii, Liiidl. Fol. Orcli. Oncid. No. 50. Rolfe in Gard. Chron. 

 V. s. 3 (1889), p. 557. 



This is probably a very rare species, with a restricted habitat. Prior to 



1889 nothing was known of it beyond an herbarium specimen gathered 



by Widgren in the Brazilian province of Minas Geraes, preserved at 



Kew, and the description and note in Lindley's Folia Orchidacea. In the 



year mentioned, Mr. Draper, gardener to the Marque's of Londonderry, at 



Seaham Hall, near Sunderland, sent the inflorescence of an Oncidium to 



Kew for identification, and shortly afterwards supplied us with the 



materials from which our description was taken, and which were identified 



for us by Mr. Eolfe, of the Kew Herbarium. Mr. Draper states that 



the plants came from the neighbourhood of Rio de Janeiro. It is a 



handsome species with bright-coloured flowers that should be sought for 



by the collectors of Brazilian orchids. 



On. xanthodon.* 



"Pseudo-bulbs narrow-ovoid, much compressed, 5 inches long, mono- 

 phyllous. Leaves 18 — 24 inches long and 2 — 2^ inches broad, narrow 

 linear-obovate, acute. Scape very slender, 6 — 8 feet long, much branched, 

 twining, greenish brown; branches slender, flexuous ; bracts ovate-lanceolate, 

 I inch long ; ovary and pedicel together nearly 2 inches long. FloAvers 

 1| inches in diameter, of a rich chocolate-brown with golden crisped and 

 crenate edges ; sepals and petals very similar, waved and reflexed, clawed ; 

 blade broadly ovate, rounded or almost hastate at the base ; lip smaller and 

 narrower than the petals ; basal portion irregularly quadrate, sessile, two- 

 lobed at the apex ; disk prominent with several tubercular calli which are 

 yellow, shining, and viscid ; blade spathulate, recurved, acute. Column 

 short, curved like the letter S, with small lateral wings at the apex." — 

 Botanical Ma<ia::ine. 



Oacidium xantliodon, Rcbb. in Gard. Chron. 1868, p. 1338. Bot. Mag. t. 5756. 

 Introduced in 1863 from the Ecuadorean Andes by Messrs. Backhouse, 

 of York. Although closely allied to Oncidium serratum, and originating 

 in the same region as the group of Oncids noticed under that species, 

 the plate and description in the Botanical Magazine show that it is 

 sufliciently distinct to require separate notice, and that it is one of the 

 series of serratum affinities that will doubtless retain its specific 

 rank. 



* Not seen by us. 



