AND THEIR MANAGEMENT. 433 



Platyclinis. 



observed while the new growth is adxancing, it should at 

 once be dealt with as advised on page 14. When growth 

 is completed, the plants may be removed to drier and 

 cooler conditions, where the)' should be afforded a 

 perfect rest. Though the two species described below 

 are the more noteworthy of those yet in commerce, 

 there are several others procurable — P. Cobbiaiia {HctnsL), 

 P. latifolia (HeiitsL), and P. ttncata {Bentli.). 



P. filiformis (Bciith.). — Flowers pale yellow, small, in long, 

 thread-like racemes, produced in summer- Leaves linear-lanceo- 

 late. Pseudo-bulbs small, conical. Philippines, 1S36. 



P. glumacea (He/it/i.). — Flowers white, very fragrant, sessile, 

 in a linear-oblong, pendulous, elongated spike, borne on the 

 curved peduncle in spring. Leaves solitary, broad-lanceolate, 

 rather obtuse, striated, tapering into a long foot-stalk, which 

 is enclosed by the sheathing scale. Pseudo-bulbs crowded, the 

 younger ones clothed with two or more large, generally reddish 

 scales, within which is a much larger, sheathing scale, 3in. to 

 4in. long, tinged with red. Philippines. This species should 

 have a place in every Orchid collection. (Fig. 152 ; B. I\L, 

 4S53, under name of Dendrochilum glumaceuin.) 



PLATYLEPIS. 



Two or three species of terrestrial, warm intermediate- 

 house Orchids, belonging to the tribe Ncottiecc, are found 

 in the above genus. The name given by A. Richard is 

 from platjs, broad, and Icpis, a scale, and is in allusion to 

 the shape of the sepals. Flowers narrow, in dense, ses- 

 sile, glandular-pubescent spikes ; sepals sub-equal, narrow ; 

 petals narrow, sub-coherent with the dorsal sepal ; lip ses- 

 sile at the base of the column, erect, concave-channelled. 

 Leaves ovate or ovate-lanceolate, membranous, contracted 

 into the petioles. Stems ascending, leafy. Rhizome 

 creeping. A. glandnlosa [Rclib. /.), the species generally 

 grown, is confined to botanic collections. 



PLEIONE {D. Don). This is now merged with Coelogyne. 



PLEUROTHALLIS. 



An unwieldy genus of about 350 species of epiphytal 

 Orchids, belonging to the tribe Epidcndrccc. The name 



2 F 



