PUTE SAT. 
ODONTOGLOSSUM ۰ 
COLONEL HALL'S ODONTOGLOSSUM. 
O. (EUODONTOGLOSSUM, Lindl.) pseudobulbis ovatis, ancipitibus 1-2-phyllis, foliis ensiformibus 
in basin angustatis, racemo multifloro (raro sub-paniculato), sepalis petalisque ovato- 
lanceolatis unguiculatis labello oblongo acuminato lacero, cristà baseos lamellatå multifidä, 
columne alis dente superiore aristato. 
ODONTOGLOSSUM Harum, Lindl. in Bot. Reg. sub t. 1992, et Folia Orchid. ; Reichenbach fil. Xenia, i. 63; Walpers Annales, vi. p. 828. 
Habitat in Peru (western declivity of Pichincha), Hartweg; Valley of Lroa, at elevation of 8000 ft., Col. Hall; N. GRENADA in 
forests of Pamplona, 8500 ft., Linden. 
DESCRIPTION. 
PsEUDOBULBS ovate, 2 to A inches long, compressed, 2-edged, bearing generally one, occasionally two, lanceolate 
Leaves, a foot or more long. RACEME many (10-20) flowered, occasionally though rarely branched, 2 to 
3 feet long. SEPALS and Prrats nearly equal, ovate-lanceolate, exceedingly ungurculate, from an inch to 
(in some varieties) an inch and a half or even 2 inches long, yellow with large, often very dark, blotches of 
purplish-brown. Lip white, with a few rich spots, oblong-acuminate, jagged at the edges, with a large and 
handsome yellow Crest, consisting of a multitude of flattened but sharp-pointed tecth, pointing sideways and 
downwards. COLUMN white, winged, the wings broken into teeth or cirrhi, of which the uppermost ds 
much the largest. 
This fine Odontoglossum was one of the earliest known though one of the latest to reach us alive. It is 
now (1873) plentiful enough, and forms a most attractive object in our spring Orchid-shows. There are many 
varieties differing greatly in the size and marking of their flowers, but all maintaining the unguiculate sepals 
and petals which chiefly distinguish it from O. luteo-purpureum (Pl. 17), to which it is indeed very nearly allied. 
O. Halli is abundant in New Grenada and Peru, but is seldom met with at a lower elevation than 8000 feet, 
hence it is quite at home in the coolest part of the “cool Orchid-house,” in which it grows and flowers very 
freely indeed. 
In the woodcut, a solitary flower of a larger variety of the species is represented, natural size. 
