TABARX. 
ODONTOGLOSSUM HASTATUM: 
HALBERT-LIPPED ODONTOGLOSSUM. 
Trisus: VANDE&.—LInptey. 
ODONTOGLOSSUM.— Humboldt § Kunth. Nov. gen. et spe.— Lindl. Sert. Orchid. xxv.— 
Orchid. gen. et spe. 211. 
PeriANTHIUM explanatum. Sepala lateralia patula, libera. Labellum planum, 
unguiculatum, ascendens, limbo reflexo diviso dentato, apice angustato; basi con- 
cavum cristaé bilamellata raro fimbriata seepius anticé bidentaté auctum. Columna 
elongata, apice auriculata aut aptera. Pollinia 2——Herbe Americane epiphyte, 
pseudo-bulbose. Scapi seepius radicales, floribus speciosis. 
OvontoctossuM hastatum; pseudo-bulbis ovalibus ancipitibus plerumqué diphyllis, foliis oblongo- 
lanceolatis scapo radicali flexuoso paniculato 5-plo brevioribus, bracteis brevibus, acutis, sepalis petalisque 
subeequalibus ovali-lanceolatis acuminatis undulatis, labelli trilobi hastati lobis lateralibus oblongo-rotundatis 
incurvis, intermedio 3-plo longiore unguiculato acuminato, basi 4-lamellato, columnz alis integris cuneatis. 
Habitat in Mexico.—Loppvicers. 
Description, 
PSEUDO-BULBS oval, sharp at the edges, with a few prominent ridges, from two to three inches 
long, bearing sometimes one, but more frequently two, oblong-lanceolate shining sharp-pointed 
LEAVES, of about a foot in length. From between the base of the pseudo-bulb, and a sheathing 
radical leaf, springs the SCAPE, rising in a somewhat zigzag manner to the height of from three to 
four feet or upwards, branched, and bearing numerous flowers. BRracTs, short, acute, sheathing, 
sessile, occurring at intervals of four or five inches. SEPALS and PETALS similar in form and 
colour, oval-lanceolate, slightly acuminate, almost an inch long, green, with rich reddish-chestnut 
blotches. Lup three-lobed, the lateral lobes roundish-oblong, curving inwards, pure white, the inter- 
mediate lobe thrice the length of the lateral ones, narrow at its base, where the edges are depressed, 
obovate, acuminate, yellowish-green at the apex, but a purplish or reddish-brown at the base, where 
are situate four oblong, elevated, longitudinal plates, of which the two central ones are beaked, and 
extend forward beyond those at the sides—all being whitish streaked with purple ; the entire length 
of the lip slightly exceeds that of the sepals and petals. Cotumn at right angles with the lip, 
hollowed out at the base, furnished, near its apex, with wedge-shaped rounded wings, which, like 
itself, are white. 
Our drawing of this new Odontoglossum was obtained, in the spring of 1838, from the rich establish- 
ment of the Messrs. Lopprexs, by whom it had been introduced, from Mexico, in the preceding year. 
It is a pleasing and elegant species,—its flowers are very durable,—and its cultivation is attended with no 
difficulty whatever. 
* So called from odovs, a “ tooth,” and yAoaca, a “ tongue,” in allusion to the teeth which are found at the base of the lip. 
