# Monograph of Odontoglossum/tranche5

Plate 21
Odontoglossum Hallii.
Plate XXI.
ODONTOGLOSSUM HALLII.
COLONEL HALL'S ODONTOGLOSSUM.
Odontoglossum Hallii, Lindl. in Bot. Reg. sub t. 1992, et Folia Orchid.; Reichenbach fil. Xenia, i. 63; Walpers Annales, vi. p. 828.
DESCRIPTION.
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. Hallii 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.
Plate 22
Odontoglossum Roseum.
Plate XXII.
ODONTOGLOSSUM ROSEUM.
ROSY ODONTOGLOSSUM.
Odontoglossum roseum, Lindl. in Bentham Plant. Hartweg, p. 251. Reichenbach fil. in Garden. Chron. April 20, 1867.
Habitat in Peru, Backhouse, Nuebrada de los Juntas, Hartweg.
DESCRIPTION.
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, since 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.
Plate 23
Odontoglossum triumphans.
Plate XXIII.
ODONTOGLOSSUM TRIUMPHANS.
SPLENDID ODONTOGLOSSUM.
Odontoglossum triumphans, Reichenbach fil. Bonpl. ii. 99; Walpers Annales, vi. p. 831; Pescatorea, t. 46.
DESCRIPTION.
This is a very fine species indeed, although it scarcely realizes the expectations excited by the figure in Pescatorea, whether as regards the size of the individual blossoms or their colour. In the fresh flowers the prevailing tone is a bright yellow, which serves as a foil to the rich brown or chestnut marking with which the sepals and petals are profusely covered, and which, though to a lesser degree, cover also the lip. But in Pescatorea the lip is represented as white, and as bearing at its upper extremity a rich blotch of bright purple which affords a beautiful contrast to the yellow and brown tints of the other parts of the flower. Probably the figure referred to may have been prepared from dried specimens and hence the mistake as to the colouring.
There are many varieties of this species, some of the best of which were exhibited by Mr. Marshall of Enfield at a meeting of the Royal Horticultural Society as early as April, 1869.
O. triumphans does not appear to be so plentiful in its native habitats as O. Hallii, O. luteo-purpureum, and many other N. Grenada kinds that now swarm in our collections. The range of elevation within which it grows is nearly identical with that of O. Hallii, hence the same treatment is suitable to both. It is easily grown and flowers freely.
1. Front view of lip and column; 2. Side view of ditto: magnified.
Plate 24
Odontoglossum Krameri.
Plate XXIV.
ODONTOGLOSSUM KRAMERI.
KRAMER'S ODONTOGLOSSUM.
Odontoglossum Krameri, Reichenbach fil. in Gard. Chron. 1868, p. 98. Floral Mag. t. 406 (sub O. Krameri). Hooker in Bot. Mag. t. 5778.
DESCRIPTION.
This though not a striking is a very distinct plant. It is a native of Costa-Rica, where it seems to be plentiful enough though it long eluded detection. It was first exhibited in 1868 by Mr. Veitch at one of the shows at S. Kensington, but appeared almost simultaneously in the collection of Mr. Day, by whose direction a careful drawing was prepared. Like other Costa-Rica plants, though not requiring a high temperature, it is scarcely content with the small amount of heat that is now allotted to the great majority of cool Orchids. Its proper place would be in the Mexican House. It is a free bloomer.
Plate 25
Odontoglossum cordatum.
Plate XXV.
ODONTOGLOSSUM CORDATUM.
HEART-LIPPED ODONTOGLOSSUM.
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.
DESCRIPTION.
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.