Tas. 6138. 
ON CIDIUM ZEBRINUM. 
Native of Venezuela. 
Nat. Ord. OrcnuipE#.—Tribe VANDEA. 
Genus Oncipium, Swartz ; (Lindl. Fol. Orehid., Oncidium). 
Oncrpiem (Cyrtochilum) zebrinum ; rhizomate robusto repente, pseudobulbis 
compressis 4—5-pollicaribus ovato-lanceolatis levibus, foliis 6—9-polli- 
caribus ensiformi-lanceolatis acuminatis carinatis nervosis, panicula 
longissima robusta flexuosa, bracteis spathaceis ovato-oblongis obtusis, 
perianthii foliolis albis rubro-fasciatis, petalis sepalisque conformibus 
ligulato-oblanceolatis crispato-undulatis, labello parvo e basi dilatato 
carunculato in laminam recurvam ovatam angustato, columna brevi 
recurva antice tumida sulcata utrinque apicem versus unidentata. 
O. zebrinum, Rehb. f. in Seem. Bompland, 1854; Lindl. Fol. Orchid. Oncid. 
No. 16; Rchb.f. in Gard. Chron., 1872, p. 1555. : 
Oponroatossum zebrinum, Rchb.f. in Linnea, vol. xxii. p. 849; Lindl, Fol. 
Orchid. Odontoglossum, No. 40. 
A very attractive plant from the pure white of the perianth, 
with its red-purple bars, and the fine gamboge-yellow of the 
bars of the lip; at least such are the attractions of the variety 
figured here. But Reichenbach describes a form in which 
the whole disk of the sepals is violet, and with only one 
violet spot at the base of each petal. In the length of the 
panicle it exceeds all other species I have seen growing ; in 
the specimen here figured it was twelve feet long. Mr. 
Burbridge, who communicated the plant to me from the 
garden of Sir William Marriott, of Dover House, Blandford, 
observes, that the pseudo-bulbs are quite like those of 0. ma- 
cranthum (Tab. nost. 5743). 
Oncidium zebrinum has been sent home, living or dried, by 
various collectors, and was first flowered, according to Pro- 
fessor Reichenbach, by Mr. Bull, in 1872. 
Descr. Rhizome stout, creeping, as thick as a goose-quill, 
with lanceolate brown scarious sheaths about one inch long. 
Pseudo-bulbs three and a-half to four inches long, by one and 
DECEMBER Ist, 1874. 
