base, in four pieces or leaflets, which are nearly equally 

 obovato-cuneate, waved, the lateral ones especially, the 

 lowermost one the smallest aud narrowest, yet formed of 

 the two lower leaflets of the outer series, and obscurely 

 two-nerved. Labellum erect, of a very singular form, and 

 difficult to be explained by words. It appears smaller 

 than the rest of the pieces of the perianth, but these arise 

 from the margins and extremity, which are waved and 

 angled, being singularly reflexed ; whilst the upper side 

 presents many wrinkles and tubercles, yet even these are 

 placed with regularity, so that every labellum is alike in 

 its angles and projections and depressions : the colour is 

 yellow, mottled and spotted with purple -red. Column 

 pale reddish-yellow, almost white, downy, semicylindrical, 

 shorter than the column, upwards expanding into two pro- 

 jecting wings : beyond this the column rises into an orbi- 

 cular receptacle for the hemispherical anther, which is also 

 downy, and which bears on its anterior edge, two soft, 

 recurved awns or horns, such as I have never seen in any 

 of this family. When the anther-case is removed, two 

 obovate, wavy, yellow masses of pollen with a cleft at their 

 posterior side are seen attached to an attenuated, narrow, 

 membrane or filament, bearing a small gland at its base. 

 Gerrnen linear-clavate, scarcely twisted. 



This is another of the many highly interesting Orchideous 

 plants for the possession of which our country is indebted 

 to Mrs. Arnold Harrison of Aigburgh, near Liverpool, 



and to her brother Harrison, Esq. of Rio. It was 



discovered by that gentleman in woods, sixty miles inland 

 from that capital, and communicated to his sister, who is no 

 less successful in cultivating, than he is in detecting the 

 many novelties of the tribe which the forests of Brazil afford. 

 It was sent to England in 1830, and in June, 1831, pro- 

 duced the panicle of flowers here represented, done in part 

 from the plant itself, and in part from a drawing sent by 

 Mrs. Harrison. 



Fig. 1. Flower. 2. Flower, from which the Lip has been removed. 3, 

 Exterior view of the lower of the four Segments of the Perianth. 4, 5. 

 Anterior and posterior views of the Lip. 6. Column, with its Anther 

 attached. 7. Column, with the Anther- Case forced back, to show the 

 Pollen-Masses. 8. Upper view of the Pollen-Masses. 9. Posterior view of 

 ditto. — Magn ified. 



