50 ZYGOPETALUM. 



one-third smaller, obovate, obtuse ; lip with a short claw and convex 



snb-orbicular blade, white stained with crimson ; crest semi-circular, 



plaited, deep crimson. Column short and broad, white above, yellow 



below the stigma; anther crimson. 



Zygopetaluin Dayanum, Benth. in Geu. Plant. III. p. 543 (1883). Pescatorea 

 Dayana, Kchb. in Gard. Chron. (1873), p. 575 ; and II. (1874), p. 226. Bot. Mcuj. 

 t. 6214 (rhodacra). 



S,\l\i-YQ.YS.—i'andidida (Gard. Chron. Ill, (1875), p. 342, with fig.), sepals 

 and petals pure white ; rhodacra (Bot. Mag. loc. cit.), sepals and petals 

 with bright red tip; splendens (Gard. Chron. (1873), p. 575), sepals and 

 petals with violet blotches at the apex. 

 Discovered by Gustav Wallis in New Granada and introduced by 

 us in 1873. On flowering in the several collections among which 

 the plants were distributed, either the markings of the perianth 

 were found to be variable or altogether absent as in the sub- 

 varieties noted above. The precise habitat of the species which 

 has hitherto been known in gardens as Pescatorea Dayana was not 

 intimated to us by the collector. The species commemorates the 

 late Mr. John Day, of Tottenham. 



Z. discolor. 



Leaves in tufts of 5 — 7, oblanceolate, sharply acuminate, conduplicate 



at base, 6 — 12 inches long. Peduncles shorter than the leaves, one- 



floAvered ; bracts sheathing, membraneous, brown. Flowers 2 inches in 



diameter ; sepals spreading, ivory-white ; the dorsal one elliptic-oblong, 



acute ; the lateral two longer and narrower, oblong-lanceolate ; the petals 



oval-oblong, obtuse, white tinted with light violet on the apical half ; 



lip violet-purple with paler margin, three-lobed, broadly obovate in outline, 



the side lobes narrow and turned inwards ; the intermediate lobe 



spreading, slightly concave ; crest semi-circular, broken up into digitate 



segments. Column short, clavate, white. 



Zygopetalum discolor, Eehb. in Walp. Ann. VI. p. 655 (1863). Warrea discolor, 

 Lindl. in Journ. Hort. Soc. IV. p. 265 (1849). Id. in Paxt. Fl. Gard. I. p. 73. 

 Bot. Mag, t. 4830. Warscewiczella discolor, Rclib. in Bot. Zeit. 1852, p. 636. Id. 

 Xen. Orch. I. p. 221. t. 93. 



Discovered by Warscewicz in 1848 on the volcano of Carthago 



in Costa Rica, growing on Ei-ythrina trees at 4,000 — 9,000 feet 



elevation. The few plants -introduced by the discoverer were sold 



at Stevens' Rooms, one of which acquired by the late Mr. R. S. Holford 



flowered in his collection at Westonbirt, in Gloucestershire, in 1849, 



on which occasion the species was described by Lindley in the 



Journal of the Horticultural Society under the name of Warrea 



discolor. It was subsequently gathered by Oersted in the same 



