636 orchid-grower's manual. 



O. WENTWORTHIANUM, Bateman— An old and well-knoivn species first 

 discovered by Mr. G. Ure-Skinner in 1839, and by him sent to Mr. Bateman, in 

 whose collection it flowered in 1840. Spikes large, branched, many -flowered ; 

 flowers 1 inch in diameter. " Flowers yellow, with deep brown bars on the sepals 

 and petals, and a cinnamon-coloured stain over the base of the lip " (Lindley, in, 

 Paxton's Flower Garden). — Guatemala. 



YlG.—Puxtoii's Fkmm- Garden, ii. p. 23, f . 123. 



O. WHEATLEYANUM, Goiver. — A very beautiful and distinct Oiicidium.-wiiioli 

 was flowered by F, Wheatley, Esq., Eingmore, Teignmouth. It is described in The 

 Garden, 1893, xliv. p. 227, as follows : — •' The flowers thickly set upon the spike, 

 are each nearly 2 inches across ; the spike carried upwards of thirty flowers, 

 making a most imposing display ; the sepals and petals are spreading, nearly 

 equal, of a rich bright brownish-crimson bordered with yellow; lip somewhat uni- 

 form, rich golden-yellow, with a marginal border of deep chestnut-brown or crim- 

 son, the whole surface regularly and distinctly corrugated ; at the base are two 

 golden-yellow auricles, and the claw and for some distance upon the blade is a large 

 stain of deep maroon-crimson of a velvety appearance." — Native country not stated. 



O. XANTHOCHLORUM.-See 0. obloxgatum. 



O. XANTHODON, Rchb.f. — A very striking plant of the 0. scn-atum section, 

 and one which although the flowers are not so large as in that species, yet makes a 

 good display from their being very freely produced. In habit of growth it closely 

 resembles 0. serratum. The pseudobulbs are 5 inches long, narrow ovoid, much 

 compressed ; the leaves narrow lincar-obovate, 2 feet long, one at the apex and 

 several equitantly sheathing the base of the bulb ; the scape is 6 to 8 feet long, 

 twining, bearing a large flexuosely branched panicle of numerous flowers, which 

 have the clawed obovate-rotundate undulate-crisped crenate sepals and petals of 

 a rich dark brown, bordered with bright yellow, the smaller narrower obovr.te 

 recurved lip being of the same colours with the basal portion yellow, irregularly 

 quadrate, and bearing a crest of sevei'al tubercular calli. — Ecuador. 



Fig. — Bat. Mag., t. 575B. 



O. ZEBRINUM, Schb.f. — An old and very beautiful species, first flowered in 

 this country by Mr. Bull, of Chelsea, in 1872. This Orchid may be said to be a 

 true scandent species, as it produces its bulbs 4 to 6 inches apart on a creeping 

 rhizome ; it produces long branched panicles several feet in length ; flowers 1 to 

 1^ inch in diameter; segments white, blotched transversely with reddish-purple 

 in a zebra-like manner; lip white, spotted with reddish-brown. — Veneziiela. 



Vlii.—Gard. Ch-UH., 1872, p. 1355, f. 304. 



S YN . — Oilontoglosm m znhrinw m . 



Orchis, Linnaeus. 

 (^TriVe Ophreae, suhtrihr Ssrapuleae.) 

 This is the genus which has given its name to the whole order ; thev 

 are terrestrial, tnberons-rooted, deciduous j)lants, having radical sheathing 

 leaves, and are distinguished by their sepals and petals being nearly 



