ODONTOGLOSSUM HUMEANUM we. ¢ 
OpontToGLossuM HuMEANUM : Pedunculo teretiusculo 3—floro, sepalis triangulo-acuminatis dorso carinatis ; petalis breve cuneatis oblongis 
acuminatis crispulis ; labelli callo baseos bilobo, lobis semirotundis in partem integram semicylindricam dorso carinatum antice divergenti bilobam excur- 
rente ; lamina cordato-ovata acuta lobulata crenulata ; columna trigona superne ampliata. Sepala flavida intus pulcherrima castaneo-fasciata, Petala albido- 
flavida basi maculis paucis brunneis. Callus luteis fasciis rubris, Lamina alba. Columna viridula. 
ObONTOGLOSSUM HUMEANUM, Rchb. f,, in Gard. Chron., Feb. 5, 1876, p. 170; Williams’ Orch. Man., 6 ed., p. 445. 
Tcones analytica. Flos antice. Columna et labellum a latere. Pollinaria, 
Apour thirteen years ago the very rare and beautiful Odontoglossum Humeanum, which we now illustrate, made its 
first appearance in the collection of the late Mr. Burnley Hume, of Harley Street, London, in honour of whom it was 
named. Very few true plants of this Odontoglot are in cultivation, although several varieties of O. Rossii pass under the 
name. There can be little doubt, however, as to the typical O. Humeanum, whose handsome flowers may be readily 
distinguished by their deep cinnamon-blotched sepals and creamy white petals, at the bases of which is usually 
found a cluster of irregularly-shaped cinnamon blotches. The broadly cordate lip is of a spotless white, occasionally 
tinged with a suffusion of pale rose, which presents a striking and agreeable contrast to the bright golden, purple-spotted 
crest, which forms such a conspicuous feature of all Odontoglots belonging to the same section as O. Rossii. 
At the time—not so long ago when one comes to think of it—when the subject of our plate first made its debut 
before the horticultural public, very little indeed was known about natural hybrid Odontoglossa, only a few being known. 
These were regarded by savants as freaks of nature, likely only to occur at rare intervals, and at the time we speak of 
such plants were much valued as vegetable curiosities by those who were fortunate enough to possess specimens of them. 
Now, however, after the experience which has been gained by importing these plants, their peculiarities are better known 
and understood, and when a fresh arrival appears it succeeds in creating a passing interest only, unless indeed it happens 
to be something very extraordinary. 
O. Humeanum is universally considered to be a natural hybrid between O. Rossii and O, cordatum, but a com- 
parison of the shape and structure of the flowers leads us to think that there is less of O. cordatum and more of 
O. maculatum in it, the characters of the latter being also observable in habit of growth. 
O. Humeanum should be grown in pans, which should be suspended near the glass, thus giving the plants as 
much light as possible, and thereby materially assisting the growths to ripen. The plants are growing nearly the whole 
year, with only a few short periods of rest, hence it is that the flowers are produced at nearly all times except during the 
summer months, when O. Humeanum is rarely seen in flower. The supply of water must be increased or diminished 
according as the plants are in active growth or not, but at no time will it be desirable to withhold it for any great length 
of time. 
Our plate was taken from a plant in the possession of John Riley, Esq., Hapton House, Hapton. 
