THUNIA. 17 



the sepals lanceolate, the petals shorter, oval-oblong, acute ; lip convu- 

 lute into a broad-mouthed funnel, with a crisped margin that is 

 reflexed at the apex ; basal half yellow, which is prolonged to the apex, 

 the lateral areas of the apical half rose spotted with carmine-purple, 

 Phaius Cooksonii, Rolfe in Gard. Chron. VII. s. 3 (1890), p. 388, fig. 57. 

 A very interesting hybrid with handsome flowers, of which the 

 sepals and petals are nearly as in the seed parent Phaius Wallichii, 

 while in the lip the influence of the pollen parent, P. tuberculosus, 

 greatly preponderates, 



Phaiocalanthe irrorata. 



Flowers 2|- inches in diameter ; sepals and petals cream-white with 



a slight tinge of green at the base and of pale rose towards the apex ; 



lip red-purple margined with white, and with a large yellow disk 



traversed by three white longitudinal raised lines. Column white. 



Phaiocalanthe irrorata, Eolfe in Jour. Linn. Soc XXIV. (1887), p. 168, Phaius 

 irroratus, Rchh. in Gard. Chron. 1867, p. 264. Fl. Mag. 1869, t. 426. 



var. — purpurea. 



Flowers as large as the preceding ; sepals and petals pure white ; 

 lip red-purple striated, margin white, disk orange-yellow traversed by 

 three white lines. 



P. irrorata purpurea, supra. Phaius irroratus purpureus, P.chb. in lit. 



As distinguished from Phaiocalanthe irrorata, the sepals and petals 

 are of a purer white, the lip somewhat larger and more deeply lobed, 

 its colour is richer, and the white margin broader. 



P. Sedeniana. 



Scapes stoutish, 2 — 3 feet high, bearing a 10 — 15 floAvered raceme 

 above. Flowers 2 — 3 inches in diameter ; sepals and petals cream- 

 white tinted with pale yellow and flushed Avith light rose colour at 

 the base ; lip distinctly three-lobed, the side lobes convolute over the 

 column, yellowish with a broad rose-purple border, front lobe bilobate, 

 white with a broad rose-purple border ; disk with three raised median 

 lines. 



Phaiocalanthe Sedeniana, Rolfe in Gard. Chron. III. s. 3 (1888), \i. 136. Phaius 

 Sedeniamis, Rchb. in Gard Chron. I. s. 3 (1887). p. 174. 



THUNIA. 



Uchb. in Hot. Zeit. (1852), p. 764. Hook. f. Bot. Mag. sub. t. 5694. 

 As distinguished from Phaius, Thuiiia has no pseudo-bulbs, but 

 jointed, biennial stems slightly nodose, and invested with leafy 

 sheaths below that gradually pass upwards into true leaves. The 



