summer it requires an ample supply of water and a moist 
atmosphere, at a temperature of 80° or 85° by day, and about 
70° at night. Like all Orchidaceous plants this should be 
kept rather dry in winter, and repotted in spring as soon as 
it shows any symptoms of growth. While in a dormant state 
the temperature should never be raised above 65° with fire 
heat. 
It may be useful to bring together into one view the three 
species now known to exist. They are as follows : — 
1. Warrea tricolor (Lindl. in Bot. Reg. 1843. misc. p. 14. 
Maxill. Warreana, Lodd. Bot. Cab. t. 1884. L. no. 30.); 
scapo multifloro foliis longiore, sepalis ovatis basi sub- 
æqualibus petalis minoribus conformibus, labello bre- 
vissimè unguiculato obovato-oblongo indiviso cucullato 
obtuso jugis tribus in medio elevatis carnosis, superficie 
laminæ seriatim corrugatá marginibus planis.— — Brazil. 
Sepals yellowish brown, lip yellow at base, pallid at 
the end, rich purple in the middle. 
2. W. cyanea (Lindl. in Bot. Reg. 1844. no. 3.-— 1845. t. 28.) ; 
spicà brevi, bracteis ovarii longitudine, sepalis ovatis 
acutis, petalis subconformibus, labello subrotundo-cuneato 
apiculato undulato lineis quinque elevatis.—— Colombia. 
—— Very much smaller than the last, and conspicuous 
with its porcelain-blue lip. 
3. W. bidentata (Lindl. in Bot. Reg. 1844. misc. 78.) ; brac- 
teis pedicello 4-plo brevioribus, labelli apice bidentati 
venis valdé convexis flabellatis lamellis altis intermediä 
dupló majore. —— Caraccas.—— Much like Warrea tri- 
color. Its lip is however regular, and slit at the end, 
the veins are much more convex, and the central plates 
thinner and deeper than in that species. "The bracts too 
are not half the length. ! 
