PLATE XXV. 
ODONTOGLOSSUM CORDATUM. 
HEART-LIPPED ODONTOGLOSSU M. 
O. (EUODONTOGLOSSUM) pseudobulbis oblongis compressis monophyllis, foliis lato-oblongis planis 
acutis scapo squamis carinatis vaginato brevioribus, racemo simplici vel paniculato, bracteis 
navicularibus acuminatis membranaceis, ovario multo brevioribus, sepalis petalisque lineari- 
lanceolatis acuminatissimis, labello cordato acuminatissimo integerrimo, appendice unguis 
carnosa apice bilobá basi utrinque dente unico auctá, columná pubescente clavatà sub- 
apterà. 
ODONTOGLOSSUM CORDATUM, Lindl. in Bot. Reg., 1838, misc. 90 ; Knowles and Westcott, Floral Cabinet, t. 100 ; Paxton’s Mag., xiii. 147 ; 
Regel. Garten-flora, 1862, 356 ; Pescatorea, i. 26. 
Habitat in Mexico, Barker. GUATEMALA, Hartweg, Skinner. 
DESCRIPTION. 
PsEUDOBULÞS oblong, very much compressed and very sharp at the edges, 14 to 2 inches long. LEAVES one 
(rarely if ever two) on each pseudobulb and broadly-oblong acute shorter than the scape. Scars and RAGEME 
sheathed at intervals with long keel-shaped membranaceous Bracts, few or many flowered, simple or (more 
rarely) branched, from one to two feet high. Supaus and PETALS nearly equal, linear-lanceolate, extremely 
acuminate, an inch or more long, greenish-yellow richly blotched with brown. Lar 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. 
