ORCHIDE.E. 25 



tenuibus rliomboideis alternis imbricatis circ. 1 cm. longis. Racemi 5-8 cm. 

 longi 8 mm. lati peuduli, rhachibus pentagonis <fc -formibus filiformibus teu- 

 iiibus, floribus ad nodos subverticillatim aggregatim sitis, nodis a se circ. 

 5 mm. remotis, bracteis singulis sub flore uno sitis ovato-triangularibus 1| mm. 

 longis circ. 1 mm. latis apice obtusis basi haud vel vix contractis margine 

 irregulariter eroso-denticulatis, pedicellis cum ovariis 2 mm. longis. Mores 

 circ. 3 mm. longi, sepalis petalisque retrorsum reflexis, labello antice patenti. 

 fSepalum posticum rotundato-ovatum minus 1 mm. longum f mm. latum, apice 

 obtusum basi contractum, lateralia ovato-triangularia valde concava 1 mm. 

 longa mm. lata apice obtusa basi haud contracta. Pelala lineari-oblonga plus 

 1 mm. longa minus mm. plus ^ mm. lata apice obtusissima basi vix contracta. 

 Labellum in circumscriptione rectangulare plus 2 mm. longum plus 1 mm. 

 latum planum basi \ mm. latum 2-nervium basi utroque latere auriculis minutis 

 \ mm. latis semi-rotundatis instructum, supra medium 2-lobatum, lobis oblongo- 

 triangularibus circ. 1 mm. longis plus |- mm. latis apice acutis basi liaud con- 

 tractis, sinibus inter lobos truncatis ^ mm. latis. Columna brevissima \ mm. 

 longa \ mm. lata. 



HAB. Arisan, leg B. HAYATA et S. SASAKI, Jan. 1912. 



Near Oberonia artsanensis HAYATA, but differs from it by the much 

 larger flowers with nearly obsolete or, if at all, very much smaller lateral lobes 

 of the lips and by the distinctly articulated leaves. 



Oberonia formosana HAYATA (Fig. 3, f, g), Mater. Fl. Formos. p. 309. 

 Epiphyta cssspitosa, caulibus simplicibus vel rarius pauciramosis 3-5 cm. 

 longis toto longitudine foliatis. Folia disticha sessilia alterna approximata 

 equitantia verticaliter compressa lineari-lanceolata 22 mm. longa 2 mm. lata 

 apice aristato-acuta margine integra basi latere inferiore recta superiore 

 s~^ -formiter curva vaginosa caulem amplectantia crassiuscula. Spicae ter- 

 minales cum pedunculis 8 cm. lougse cernuaa, floribus minutis 1 mm. in 

 diametro, secus rachin interrupte fasciculatim dense sitis, bracteis ovato-acu- 

 minatis 1 mm. longis reflexo-patentibus. Sepala lateralia late ovata basi con- 

 iiata i mm. longa totiusque lata obtuso-acuta patentissima, posticum minus. 

 Petala sepalo angustiora oblonga f mm. longa mm. lata obtusa. Labellum 

 sessile concavum rotundatum in circumscriptione f mm. longum totiusque 



