marked petals form a marked contrast with the white sepals. Two varieties have 
been described, but they chiefly differ in the amount of spotting on the petals. 
As to cultivation, it is recommended that it should be planted in well- 
drained pots, in a compost of fibrous peat and sphagnum moss, and placed 
in the Cattleya house. 
Colax jugosus was the pollen-parent of the handsome Zygocolax xX Veitchit, 
the seed-bearer being Zygopetalum crinitum. 
The following are the other described species of the genus. 
Colax modestior Reus. F. in Orro Hamb. Gartenz., XVI (1860), p. 14. — 
Native of “ Guatemala? ” which, however is very doubtful. 
C. placanthera Linvv. Bot. Reg., XXIX, Misc., p. 50. — Maxillaria placan- 
thera Hook. Bot. Mag., LIX (1832), t. 3173. — Native of Brazil. 
C. Puydtii Linn. & Anpré in Jil. Hort., XXVII (1880), p. 5, t. 369. — 
Native of Brazil. 
C. viridis Linvu. Bot. Reg., XXIX, Misc., p. 50. -—— Maxillaria viridis LINDL. 
Bot. Reg., XVIII (1832), t. 1510. — Native of Brazil. 
R. A. Ro.re. 
