GENERA AND SPECIES 103 
in the chapter on the potting of terrestrial Orchids. The 
species are evergreen, and require but a short resting season. 
They require shade. 
Phalznopsis.—These are warm-house species from the 
Philippines, Java, Borneo, India, and other places. Pot 
the plants in Sphagnum-moss. They succeed best when 
suspended, but if they are grown on the stage they should 
be elevated on inverted pots. A moist atmosphere is 
essential. P. amabilis Rimestadiana will grow in the 
intermediate house ; so will also most of the other species, 
if placed in a moist corner. 
Peristeria.—The genus is best known in gardens by P. 
elata (Dove Orchid). The cultivation is similar to that for 
Phaius. 
Physosiphon.—A small genus allied to Stelis. P. Loddi- 
gesii has racemes of orange-coloured flowers. 
Platyclinis—These are pretty, intermediate-house Or- 
chids, with pendulous racemes of white or yellow flowers, 
generally fragrant. 
Pleione. See Coelogyne. 
Pleurothallis.—A large genus of elegant, dwarf-growing 
Orchids for the intermediate house. 
Promenza. See Zygopetalum. 
Renanthera.—These showy species are natives of Tro- 
pical Asia and Malaya. They should be grown like Aérides 
and Vandas. R. Imschootiana is a compact, free-growing 
species, with showy, crimson flowers. 
Restrepia.—A cool-house genus usually grown with the 
Masdevallias, and requiring similar treatment. 
Rodriguezia.—This genus includes the species usually 
called Burlingtonia in gardens. Suspend the plants in the 
