14 



ONClDILJM stramineiim. 

 Straw-coloured Oncidmm. 



GYNANDRIA MONANDRIA. 

 Nat. brd. Orchidace^, § Vande^. 

 ONCiniUM. Botanical Register, vol. 9.fol. 727. 



0. stramineum ; ebulbe, foliis crassis carnosis ovato-lanceolatis acutis dorso 

 rotundatis scapo paniculate rlgido erecto brevioribus, sepalis subrotundis 

 unguiculatis concavis liberis integerrimis, petalis duplo majoribus ob- 

 longis obtusis emarginatis margine crispis, labelK lobis lateralibus ob- 

 longis carnosis acutis margine revolutis basi columnse proxima nectari- 

 feris intermedio reniformi piano emarginato longioribus, tuberculis disci 

 4 geminatis, columnse alis carnosis linearibus obtusis elongatis genuflexis 

 decurvis. Bot. Reg. 1838. misc. no. 63. 



Of this pretty species a short account has already been 

 given in this work among the miscellaneous matter for the 

 year 1838. It was one of the first plants sent from Vera 

 Cruz to the Horticultural Society by Mr. Hartweg, who 

 found it at a place called Zacuapan, where some other fine 

 things, especially the rare and beautiful Berberis tenuifolia, 

 were obtained. 



This species is readily known when out of flower by its 

 rigid fleshy unspotted leaves, rounded, not keeled, at the 

 back. When in flower the stiff" panicles, and pale straw 

 coloured blossoms, smelling slightly of primroses, together 

 with the peculiar form of the wings of the column, and the 

 almost orbicular sepals, offfer sufficient means of recognition. 



Fig. 1. represents the lip and column, the latter with the 

 narrow falcate deflexed wings peculiar to this species ; fig. 2. 

 is a transverse section of a leaf to show its thickness and 

 peculiar form. 



O. stramineum will not submit readily to the same treat- 

 ment as is given to the West Indian species of this genus. 

 It is injured by that degree of heat in which they flourish; 

 the leaves which it forms under it are small, and the flowers 



