own with the Odontoglossums.
_C. Noezliana_, scarlet, has been a fine species in the hands of the
hybridiser, and in the future may give us "Scarlet Odontoglossums." _C.
vulcanica_ has deep rose-coloured flowers.

~Coelia.~--There are several species of Coelia, and they require to be
grown in the intermediate house.

~Coelogyne.~--A very large genus of two distinct sections, that
represented by _C. cristata_ being evergreen; the Pleione or Indian
crocus section deciduous, and requiring to be treated as terrestrial
Orchids, while the larger section are epiphytal. The epiphytal sections
are warm and intermediate house plants. The Pleiones should be grown in
a cool house, and rested quite dry after the leaves fade and until
growth again commences.

[Illustration: PLATE VII

ONCIDIUM MARSHALLIANUM]

~Comparettia.~--These are small-growing epiphytes. Grow in small baskets
or hanging pans in the intermediate house. _C. falcata_, red, _C.
macroplectron_, pale rose; spotted; and _C. speciosa_, scarlet, are the
best species.

~Colax.~--A small genus of cool-house Orchids allied to Lycaste, and
requiring similar treatment. _C. jugosus_ has been crossed with
Zygopetalums with good results.

~Coryanthes.~--These are similar in habit to Stanhopea. The plants should
be grown in baskets suspended in the intermediate house. The structure
of the large, fleshy flowers is most remarkable, and some interesting
particulars relating to their fertilisation by insect aid have been
recorded in the _Gardeners' Chronicle_ (July 17, 1897, p. 31).

~Cycnoches.~--Of similar habit and requirements to Catasetum. The plants
are best grown in baskets and suspended. They should be rested cool and
dry with the deciduous Dendrobiums. _C. chlorochilon_ (Swan Orchid), _C.
Egertonianum_, _C. Loddigesii_, _C. maculatum_, _C. peruvianum_, and _C.
pentadactylon_ are fine species.

~Cymbidium.~--These are showy, large-growing Orchids for the intermediate
house or warm conservatory. Pot the plants in equal proportions of
fibrous loam, peat, and Sphagnum-moss. _C. giganteum_, _C. Lowianum_,
_C. grandiflorum_, and _C. Tracyanum_ are the most commonly grown. _C.
eburneum_, _C. Mastersii_, _C. insigne_, and _C. erythrostylum_ are
fine, white species, the latter two with rose markings on the lip. There
are numerous hybrids. _C. Lowio-eburneum_, a cross from _C. Lowianum_,
and _C. eburneum_ is illustrated in Plate VI.

~Cynorchis.~--Terrestrial Orchids from