Botanical Magazine 106 - 1880.pdf - hibiscus.org

TAB. 6494.
ONCIDIUM DASYSTTLE.
Native of Brazil.
Nat. Ord. OECHIDEJE.•Tribe VANDE.S¡.
Genus ONCIDIUM, Swartz; (Lindl. Fol. Orchid. Oncidium.
ONCIDIUM (Tetrapetala) dasystyle ; pseudobulbis breviter ovoideis compressis
demum creberriine longitudinaliter sulcatis, foliis 2 Hneari-lanceolatis subaeutis
carinatis, scapo gracili paucifloro, bracteis parvis acutis, floribus gracile pedi-
cellatis, sépalo dorsali petalisque subsequalibus elliptico-lanceolatis acuminatis
flavis purpureo maculatis, sepalis lateralibus paullo majoribus labello suppositis
ad medium connatis pallide virescentibus, labelli ampli lobis lateralibus parvis
triangularibus terminali dilatatorenifbrmi undulato membranáceo, callo basilari
magno cordiforme valde convexo purpurascente basi utrinque callo minuto
elongato instrueto, columna apicem versus alata lateribus ungueque labelli
puberulis.
O. dasystyle, Reichb.f. in Gard. Chron. 1873, p. 293 et 432.
A very elegant plant, a native of the Organ mountains in
Brazil, whence it was imported by Messrs. B. F. Williams,
of the Paradise Nurseries. Its near allies are the 0. citrinum
(Tab. 4454), 0. bifolium (Tab. 1491), and 0. flexuosvm
(Tab. 2203), all of which differ in the form of the labellum,
its crests, and in other conspicuous characters. In its
lateral sepals being united only below their middle, it
forms a transition between Lindley's two great sections of
Tetrapetala and Pentapetala.
The specimen here figured was kindly communicated by
Mr. Bull.
DESCE. Pseudo-bulb* one to one and a half inch long,
almost elliptic, with rounded ends, which are truncate at
the insertion of the leaves, slightly compressed, green,
edges obtuse, young quite smooth, old longitudinally
grooved with obtuse ridges. Leaves four to five inches
long by one broad, linear-lanceolate, subacute, keeled,
bright green. Scape very slender, six to seven inches
long, with a few distant small acute bracts. Raceme two-
MAY 1ST, 1880.