20 CYPKIPEDIUM. 



stone, among which the longest of the fleshy roots should be kid, and 

 to which they will soon firmly cling ; the plants may then be put into 

 a compost of fibrous peat and sphagnum in equal proportions, care being 

 taken not to raise them above the level of the rim of the pot. As 

 may be inferred from the situation and climate of Moulmein and the 

 other stations of the species, C. concolor requires a high temperature with 

 a moist atmosphere, such as is maintained in the Phalsenopsis or East 

 Indian house, where the mean average temperature by fire-heat ranges 

 from 18° to 24° C. (65° — 75° F.) during the year. Water must be freely 

 supplied at all times. 



0. Curtisii. 



Leaves oblong, or oval-oblong, 6 — 8 inches long, tesselated above 

 with deep and pale green. Scapes 9 — 12 or more inches high, one- 

 flowered. Bract about one-third the length of the ovary. Flowers large, 

 with all the segments ciliolate; upper sepal somewhat small in proportion 

 to the size of the flower, broadly cordate, acuminate, grass-green, with 

 a broad white margin, and sometimes with a purple stain on each 

 side next the white margin, veins numerous and close set, green, 

 changing to brownish purple towards the base ; lower sepal smaller, 

 ovate, acuminate ; petals ligulate, deflexed, recurved at the tip, margined 

 with blackish hairs and warts, veined with green, and almost uniformly 

 spotted with purple on a pale purple ground that is almost white along 

 the mid-vein; lip large, helmet-shaped, dull brownish purple, the infolded 

 lobes narrow, pale purple spotted with purplish warts. Staminode 

 broadly horseshoe-shaped, Avith deep notch on the basal side, and three 

 small teeth between the pointed incurved arms. 



Cypripedium Curtisii, Rchb. in Gard. Chron. XX. (1883), p. 8. Williams' Orch. 

 Alb. III. t. 122. 



Introduced by us from Sumatra in 1882 through our collector 

 Curtis, who discovered it at some distance from Padang, at an 

 elevation of 3,000 — 4,000 feet, on the great mountain range that 

 stretches almost through the entire length of the island. Its nearest 

 affinities are Cypripedium superbiens and 0. ciliolare, between which 

 it is intermediate, but nearer to the last than to the first-named ; 

 from the former it is distinguished by its shorter upper sepal, of 

 which the central area is entirely green ; by its shorter differently- 

 coloured petals that are more reflexed at the tip j by its longer 

 and more acuminate bract ; and by its deeper green foliage. From 

 the latter it is distinguished by its broader and more acuminate 

 upper sepal; by the shorter cilia of the petals that are also spotted 

 differently; by its longer and more pointed lip, the infolded lobes 



