~Microstylis.~--The species of Microstylis should be grown as terrestrial
Orchids in Sphagnum-moss and peat, with fine crocks added. Rest the
deciduous species in dry and cooler conditions.

~Miltonia.~--The Miltonias are compact-growing South American epiphytes,
to be grown in pans elevated in a sheltered corner of the intermediate
house. Pot the plants in ordinary material for epiphytal Orchids, and
surface the compost with living Sphagnum-moss. _M. vexillaria_, _M.
Roezlii_, _M. Warscewiczii_, formerly included in Odontoglossum, form a
section requiring to be grown like Odontoglossums, but rather warmer.
This section has been found to thrive well with a good proportion of
leaves in the compost. _Miltonia vexillaria_, "Empress Victoria," is
illustrated in Plate II.

~Mormodes.~--Grow these with the Catasetum and Cycnoches, and treat them
similarly by resting them dry. The genus is a singular one, the
curiously formed, generally fragrant flowers being very attractive.

~Neobenthamia.~--_N. gracilis_ is an elegant, white-flowered, slender
species from Tropical Africa, and it should be grown in
warm-intermediate temperature.

~Nephelaphyllum.~--Dwarf, terrestrial species for the warm house. Grow
with Anoectochilus.

~Notylia.~--Graceful epiphytes for baskets and suspending pans.
Intermediate house.

~Octomeria.~--A genus allied to Pleurothallis. The flowers are usually
white and rather small.

~Odontoglossum.~--The Odontoglossums are deservedly the most extensively
grown genus of cool-house Orchids, the larger proportion of those in
gardens being represented by _O. crispum_ (illustrated in Plate VIII.),
one of the most beautiful of Orchids. The spotted forms often realise
very high prices. Cool, moist houses are provided for _O. crispum_ and
its section of Odontoglossum; in some gardens several houses are
allotted to the species. Given a suitable house and careful treatment,
the Odontoglossums are among the easiest Orchids to grow, and the most
certain to flower. All the species generally classed with _O. crispum_
should be grown in well-drained pots. The compost in which they are
grown used to be formed exclusively of Orchid peat and Sphagnum-moss,
and, where these materials can be obtained of good quality they have
never been improved upon. There came a craze in some collections for
putting the Odontoglossums in leaf-soil, which ended in disaster,
although it indicated that a proportion of dry leaves (not leaf