of which Dr. Lindley only examined a single flower—though lie made a most careful drawing—is shown by a glance
at the latter, to be a totally different tiling ; it has moreover, I fear, long since disappeared from our collections. In Dr.
Lindley's description the flower-scape is said to be terminal, which in nature it never is, although from the way in which
Karwinski's wild specimen was glued together, it certainly presents that appearance in the herbarium. The column
moreover, and the base of the sepals and petals, are said to be pubesoent, though nothing of the kind is visible to the
naked eye when the flowers are fresh. "With a powerful magnifying glass pubescence may certainly be seen.
Odontoglossum nebulomm flowers at different seasons of the year, always sending up its scape at the same time as
the young growth. It is of the easiest culture* The figure was derived from a beautiful specimen that flowered last
November in the collection of J. Day, Esq., of Tottenham, who grows this and many other Odonloglossa in higlt
perfection.
DISSECTIONS.—1. Lip, seen in front; 2. Ditto, seen sideways: both magnified.
* As most of the Odonloglossa require to be treated in tlie same way, I transcribe, from the ' Guide to Cool-Orcliid Growing' (Reeve, 1864), the
following instructions for the culture of the genus:—" They will all succeed perfectly in a low lean-to house facing the north, the mean temperature of
which need not exceed 60°. They should stand oil a shelf of slate or stone, near the glass, but should always be protected from the direct raj s of the sun.
Constant humidity should be maintained by damping the shelves and floors, but the plants themselves will only require water in moderation, and what
is given to them should pass away freely, lor if it stagnates, or if the compost in which they grow becomes sodden, the roots will immediately decay.
A gentle evaporation is greatly assisted by placing layers of moss-to be kept damp of coursc-on the shelves whereon the plants stand. Odonloglossa
cannot endure wooden blocks, but will thrive in a compost of which one-half consists of small broken potsherds, the remainder being a mixture of
shredded sphagnum (dusted with fine sand) and fibrous peat. About one-third of the entire depth of the pots may be fdlcd with this mixture, the
other two-thirds containing nothing but large pieces of broken pots, so as to admit as much air as possible to the roots. The pots in which the plants
arc grown should stand on other pots (inverted) placed in saucers of water, in order to secure humidity and protect them from wood-lice. Nearly all the
species flower during the winter or spring months, a circumstance that greatly enhances their value. Many, e. g. 0. pulcMlum, are deliriously fragrant,
and the flowers of nearly all the species remain in perfection for weeks, whether left on the plants or cut for bouquets. In so vast u genus we shall, no
doubt, meet with many idiosyncrasies, but niuc-tcuths of tlie species will flourish under the treatment indicated above, and which may be regarded as
suitable to the majority of cool Orchids. Most Odonloglossa are, like tlie Masderallias, very impatient of the knife, and cauuot therefore be rapidly
multiplied. They have also a peculiar aversion to fumigation by tobacco, which causes their leaves to fall off."