P L A T E X X I I .
O D O N T O G L O S S U M ROSETJM.
R O S Y O D O N T O G L O S S U M.
O. pseudobulbis ovatis ancipitibus l-phyllis, foliis oblongo-lanceolatis racemo gracili multifloro
duplo brevioribus, bracteis ovatis concavis subangulatis pedicel lis duplo brevioribus, sepalis
petalisque lanceolatis, labello trilobo basi bilamellato: lobis lateralibus nanis rotundatis
intermedio obcuneato acuto, columna elongata apice alis 3 membranaceis integris
aucta.
ODONTOGLOSSUM ROSKUM, Lindl. in Ben/ham Plant. Hartweg, p. 251. Reichenbach //. in Garden. Chron. April 20, 1867.
Habitat in PBBU, Backhouse, Nuebrada de los Juntas, Hartweg.
DESCRIPTION.
PSEUDOBULBS ovate, two-edged, much compressed, dark-coloured, from one to two inches long, carrying a short
solitary oblong-lanceolate leaf. LEAVES very sharp-pointed linear-lanceolate, not half the length of the
slender nodding graceful many-flowered RACEMES. BRACTS ovate, slightly angular, much shorter than
the PEDICELS. SEPALS and PETALS nearly equal, lanceolate, acuminate, linear, two-thirds of an inch long,
of a beautiful bright rose colour. LIP about same length as the petals, pale whitish rose, three-lobed,
bUamellate at the base, side-lobes rounded, very small, intermediate lobe sharp-pointed, obcuneate.
COLUMN standing forward, rounded, provided at its apex with three membranous icings.
A charming little species long known by the specimens in the Lindleyan Herbarium. It was introduced—
though in very limited quantities—by the Messrs. Backhouse several years ago, sinco which time it has always
continued scarce. In Lindley's Herbarium the racemes are about the length of those represented in the
figure, but in a specimen exhibited in 1872 by Mr. Linden the pseudobulbs, leaves, and racemes were nearly
twice as large and as long as those in the Plate. The precise treatment that it affects has not yet been
distinctly ascertained, but there can be no doubt that, being a denizen of high places on the mountain ranges
in Peru, it prefers the coldest house.