642 ORCHIDES. 



POLYSTACHYA. 



very dense obtuse raceme about an incb long. In habit, size, and general appea- 

 rance ihe species bears much resemblance to Ihe Encyclia nana of Poppig, which 

 like E. polystachya of ihat author, is apparentiy a Polystachya, notwithstanding the 

 manner in which the pollen masses are represenled, about which I ihink there must 

 be some error. In ihis plant there is a pair of pollen masses, excavated at the back 

 and attached to a short caudicula aiid small gland. 



16. POLYSTACHYA PAULENSIS Rchb. fil, Mss.: 



Labello Irifido, laciniis semioblongis, oblusis, lateralibus subbreviori- 

 bus subantrorsis, menlo obtusissimo. Plantula pusilla habitu et magni- 

 tudine Polyslachyae nanae Rchb. fil. 



' In arboribus ad Hyta Provinciae S. Pauli. v. Martius. (Vid. in herb. Monac.) 

 ftlii 



17. POLYSTACHYA MASAYENSIS Rchb. fil. Bonpl. IIL 217: 



AlY. Polystachyae cereae Lindl. foliis lineariligulatis, racemo simplici 



nunc aequalibus, pedunculo ac ovariis puberulis, labelli trilobi basi ima 



furfuraceocallosi lobis lateralibus rotundatis, lobo medio producto retuso. 



Planta tenuis basi pseudobulbosa. Folia lineariligulata — tripollicaria. Peduncu- 



lus pollicaris— quadripollicaris basi vaginis acutis ancipilibus scariosis 2—3 veslitus, 



superne dense spicatus. Bracteae triangulae aristula brevissiraa. Sepalnm impar 



lanceolatum ; sepala lateralia triangula ; lepala linearia acuta. In summo monte Ma- 



saya. Am. cenir. Oersted. 



Var. elatior Rchb. fil. Bonpl. IH. 217 : Specimen foliis ligulatis quadripollicaribus 

 et pedunculo quinquepollicari ramuloso, notis tamen speciei genuinae. Vuitus Poly- 

 stachyae estreliensis Rchb. fll. et caracasanae Rchb. fil. In Monte Masaya 3000'. Am. 

 centr. Oersted. 



18. POLYSTACHYA CLAVATA Lindl. Bot. Reg. XXVIIL (1842). Misc. 71 : 



Foiiis lineari-oblongis obtusis fecurvis canaliculatis, paniculae brevis 

 striclae spicatae ramis clavatis, labelli carnosi iobo medio emarginato cre- 

 nato lateralibus brevibus acutis , disco farinoso basi convexo. 



Inconspicuous species from Beliza. Loddiges. Flowers pale yellow and small. 

 The branches of a short panicle are fleshy, club-shaped. studded with sessile Uowers. 



19. POLYSTACHYA AFFINIS LO. 73. Bot. Reg. 1839. (XXV.) Misc. 44: 



Flowers with Loddiges, who imported it from Sierra Leone. Extremely differeni 

 from P. puberula, of which I once thought it might be a variety, and has larger flo- 

 wers , than any of the racemose species of the genus. Sir W. Hooker has observed 

 a gland and caudicula in my Polystachya macrantha (Bot. Mag. t. 7307.), which is pro- 

 bably the Dendrobiura galeatum of Swarlz; I had previously noted the same thing 

 in P. ramulosa (Bot. Reg. 1838. Misc. 144) and I find a similar structure in the pre- 

 sent species : it is therefore probable, thal the genus Polystachya should be placed 

 in Vandeae, among ihe genera belonging to which subdivision a better station may 

 be found for it than next to Dendrobiura. 



20. POLYSTACHYA BRACTEOSA Lindl. Bot, Reg. XXVI. (1840.) Misc. 102: 



Foliis obovato-oblongis acutis in petiolum carinatum anguslatis, ra- 

 cemo tomentoso oblongato cernuo basi ramoso, bracteis foliaceis acu- 

 minalissimis squarrosis , sepalis villosis , labelli ciliati trilobi per axin 

 niedium villosi lobo medio ovato acutiusculo. 



A drooping Polystachya, with orange coloured flowers , imported from Sierra 



Leone by Messrs. Loddiges. Its leafy lapering squarrose bracts and downy flowers 



readily disiinguish it. 



Bot. Mag. 4161: Pseudobulbis subrotundis compressis aggregatis , folio unico pe- 



tiolalo oblongo-ovato acuto, racerao e summilate petioli nutante puhescente pedun- 



cuioque braclcato, bracteis (infima foliacea) lanceolatis acumioaiis concavis, ioferiori- 



