Pseudobulbs oblong, very much compressed and very sharp at the edges, 1½ to 2 inches long. Leaves one (rarely if ever two) on each pseudobulb and broadly-oblong acute shorter than the scape. Scape and Raceme sheathed at intervals with long keel-shaped membranaceous Bracts, few or many flowered, simple or (more rarely) branched, from one to two feet high. Sepals and Petals nearly equal, linear-lanceolate, extremely acuminate, an inch or more long, greenish-yellow richly blotched with brown. Lip shorter than the sepals heart-shaped, with a very acuminate slightly recurved apex, white with dark brown spots and a purplish 2-lobed callus at the base. Column pubescent, club-shaped, almost wingless.
Though scarcely to be classed among the more attractive species, O. cordatum is occasionally seen at our Shows with branching scapes 2 feet high and flowers much more richly coloured than those in the Plate. It is found both in Mexico and Guatemala (whence plants were sent to me by my lamented friend Skinner), but always at high elevations.
It flowers in the early summer without any special treatment, except that it is perhaps more impatient of water than some of its congeners.
Plate XXVI
Odontoglossum angustatum.
Plate XXVI.
ODONTOGLOSSUM ANGUSTATUM.
NARROW-PETALLED ODONTOGLOSSUM.
O. (Isanthium) pseudobulbis ovato-oblongis compressis, foliis longis lato-lanceolatis erectis acutis paniculâ ramosâ elatâ brevioribus, bracteis carinatis acutis ovario multò brevioribus, sepalis petalisque subæqualibus undulatis unguiculatis, labello ovato-lanceolato acuminato reflexo, cristæ lamellis lateralibus membranaceis trifidis, digitis anterioribus majoribus, callo obtuso interposito, columnâ apterâ.