whitish, streaked with green, the extremity brown. Two 

 lower segments combined for half their length, so as to 

 form one erect, green piece, about equal in length to the 

 rest of the flower, and having two acuminated and rather 

 spreading segments. Labellum lanceolate, erect, reddish- 

 green, having at its base a penicellate appendage point- 

 ing downwards. Column erect, greenish, with two broad, 

 white wings occupying the upper half, and standing for- 

 ward, projecting into a blunt lobe at the base, and at the 

 extremity into a subulate lobe. Anther sessile, inserted 

 between the two upper lobes of the wings, two-celled, each 

 cell bearing two flattened pulverulent pollen-masses. 



The curious and beautiful New Holland Genus Ptero- 

 stylis is known to Botanists by Mr. Brown's excellent 

 character, and by the splendid designs and analysis of one 

 species (P. grandiflora,) executed by Mr. Bauer : but no 

 where, perhaps, has any species been cultivated, except at 

 the Royal Gardens at Kew, whence Mr. Aiton has most 

 kindly communicated drawings of three species which had 

 flowered in that rich collection. The present individual was 

 marked P. grandiflora: but it differs from Mr. Brown's 

 plant so named, in the presence of large radical leaves, in 

 the different shape of its labellum, and, especially, in the 

 much shorter segments of the lower lip of the flower. To 

 me it appears to agree better with the character of P. curta, 

 as well as with a specimen in my possession of that plant, 

 for which I am indebted to Mr. Brown. In our plant, 

 however, the lower lip is nearly, if not quite, equal in 

 length with the galea, while in Mr. Brown's P. curta it is 

 shorter. 



The specimen here figured was sent by Mr. Allan Cun- 

 ningham, and flowered at Kew in October, 1829. The 

 species was discovered by Mr. Brown in the neighbourhood 

 of Port Jackson. 



Fig. I. Front view of a Flower. 2. Labellum. 3. Column. 4. Anther. 

 5. Pollen-Masses. — Magnified. 



