42 ONcmiUM. 



about a foot long, panicled beyond the middle. Flowers numerous and 



somewhat crowded, f inch in diameter ; seixals and i^etals oblong or 



obovate-oblong, bright yellow blotched with red, the lateral sepals free ; 



lip three-lobed, the basal lobes auriculate, spotted with red, the front 



lobe clawed, transversely oblong, wholly yellow ; crest consisting of five 



erect teeth, of which the four outside ones are roundish, the central 



one much narrower and horn-like. Column wings deltoid. 



Oiicidium Harrisonianum, Lindl. Gen. et Sp. Orch. p. 202 (1832). Id. in Bot. Reg. 

 t. 1569 (1833). Id. Fol. Orch. Oncid. No. 120. On. pallidum, Lindl. in Bot. Reg. 

 1840, misc. No. 108. 



Discovered on the Organ Mountains by Mr. William Harrison, and 



sent by him to his relative, Mrs. Arnold Earrison, of Liverpool, in 



whose collection it flowered in October, 1832. It was subsequently 



found by Martius on the Serra de Piedade, in the province of Minas 



Geraes. It is a dwarf species with bright flowers, easily distinguished 



by its glaucous pseudo-bulbs and recurved leaves, and especially by 



the remarkable crest of its labellum. 



On. hastatum. 



Pseudo-bulbs ovoid, 3 — 4 inches long, compressed ancipitous, usually 

 with 2 — 3 shallow ridges on each of the flattened sides, mono-diphyllous. 

 Leaves oblong-lanceolate, 6 — 9 inches long. Scapes pale green, sometimes 

 mottled with dull crimson, 4 — 5 feet long, paniculate, v?ith short distant 

 branches each bearing 3 — 4 or more flowers. FloAvers \\ inches in 

 diameter ; sepals and petals stellate, lanceolate, acute, chocolate-brown 

 bordered and barred with light yellow-green ; lip three-lobed, the lateral 

 lobes white or light yellow, the intermediate lobe halberd-shaped, claret- 

 red passing into yellow-green at the apex ; crest consisting of two 

 parallel keels terminating in two teeth and with two smaller lateral 

 teeth. Column wings rounded, white. 



Oncidium hastatum, Lindl. in Paxt. Fl. Gard. I. p. 5 (1851). Id. Fol. Orch, 

 Oncid. No. 192. On. stelligerum, Rchb. in Gard. Chron. 1873, p. 1398. Odonto- 

 glossum hastatum, Batem. Orch. Mex. et Guat. t. 20 (1843). Od. phyllochilum, 

 Morren in Ann. Gaud. t. 271. 



Sub.-vars. — atratum (Fol. Orch. Oncid. No. 192 B.) lip claret-red ; 

 flavescens (Id. JS'o. 182 A), lip straw-yellow ; M. RoezVs (Gard. Chron. 

 VI. (1876), p. 36), side lobes of lip pale yellow, the middle lobe rose- 

 pink; Mr. Wilson's, side lobes of lip white, the middle lobe rose-pink 

 bordered with white. 



Oncidium hastatum was first introduced from Mexico, in 1837, by 

 Messrs. Loddiges, from whom Mr. Bateman obtained materials for 

 figuring and description in his Orchidaceoi of Mexico and Guatemala, 

 which he completed in 1843. Very little is recorded of it during 

 the forty years that followed its introduction ; it is incidentally 



