PHAIUS. 15 



freely watered, with rain water when possible, without getting sodden. 

 They are placed in a shady corner of the Phalaenopsis house, where the 

 temperature ranges from 18 — 21° C. (65 — 70° F.), and where they get 

 plenty of air ; the sphagnum and compost are kept moist all the year 

 round, and the leaves are generally sponged over once a week to keep off 

 the thrijis that sorely affect this plant."* 



We may add that Pliaim tuherculosus is also successfully cultivated 

 in the Orchid collections of Sir Trevor Lawrence, Baron Schroeder and 

 other amateurs, also in Mr. Wilson's garden at Weybridge. It has 

 been found to thrive in a shaded stove under treatment similar to that 

 described above. 



P. Wallichii. 



Pseudo-bulbs angulate, 3 — 6 inches high, di-triphyllous. Leaves elliptic 



oblong, acute, nearly a yard long. Scape 3 — 4 feet high, bearing along 



its upper part a raceme of 15 — 20 large and showy flowers spirally 



arranged round the rachis. Sepals and petals linear lanceolate, 2| inches 



long, tawny broAvn, sometimes margined with yellow, whitish behind ; lip 



broadly oval, convolute over the column, the basal half orange-yellow 



Avith a pale purple stain on each side ; distal half reflexed at the apex, 



white with a yellow disk traversed longitudinally by 4 — 5 red lines, 



margin erose ; spur yellow. Column pale yellow. 



Phaius Wallichii, Lindl. Wall. PL Asiat. II. p. 46, var. t. 158 (1831). Gen. et Sp. 

 Orch. p. 126. Paxt. Mag. Bot. VI. p. 193. Bot. Mag. t. 7023. P. Mannii, Hort. 



var. — bicolor. 



Pseudo-bulbs smaller and knobby like the rhizome of some species of 



Iris. Flowers smaller and differently coloured, especially the labellum, 



the spur and tube of which is tawny yellow, the front lobe white 



bordered with rose. 



P. Wallichii bicolor, supra. P. bicolor, Lind. Gen. et Sp. Orch. p. 128 (1831), Id. Serf. 

 Orch. t. 23. Bot. Mag. t, 4078. Thwaites, Eiuun. PI. zeyl. p. 300. 



Widely distributed throughout the lower Himalayan zone^ inhabiting 

 hot and damp valleys from Nepal eastwards to Assam and thence 

 spreading southwards into Burmah, It was introduced to Chatswortli, 

 in 1837, by Gibson, from the Khasia Hills, where " it luxuriates 

 beneath a densely umbrageous covering of trees on such portions of 

 rock as are partially covered with vegetable soil," 



The vainety, long cultivated as a species under the name of Phaius 

 bicolor, is a native of Ceylon, on the hills near Peradenia, at 2,000 — 4,000 

 feet elevation, where there is an annual rainfall of 100 inches. It 

 was communicated to Dr. Liudley and probably to the Royal Gardens 

 at Kew, by McRae, in 1836, or the following year. 

 * Gard. Chron. XXI (1884), p. 520. 



