ORCHIDACEJE 



lobi medii callo longitudinali magno, carnoso, lateraliter com- 

 presso, 2-5 mm. alto, valde elevato donatum ; lobi laterales late 

 obtusi, lobus medius erecto-incurvus, linearis, obtusus, 2 mm. 

 longus,vix 1 mm. latus. Gynostemium crassum,dorso-convexum, 

 6 mm. longum. 



■&* 



Allied to the Bornean Arachnis breviscapa J. J. Smith, but in 

 part distinguishable by its smaller flowers. The hinged or mov- 

 able labellum separates this species generically from Vandopsis 

 Lissochiloides Pfitz. and V. leytensis Ames, if the treatment of 

 J. J. Smith is adopted. 



Luzon, Isabella Province, W. S. Lyon 126, March to April. Terrestrial 

 among rocks, 3000 feet altitude. Flowers straw-yellow, hieroglyphieally 

 blotched with brown. Central ridge on labellum bright violet. Fragrance 

 of violets. 



83. ESMERALDA Reichb.f. 



This is a small group which is probably best kept as a section of 

 Vanda. 



1. Esmeralda Sanderiana Reichb.f. in Gard. Chron. (1882) 1 : 

 588. 



Mindanao. 



84. VANDOPSIS Pfitz. 



This is a small genus which is nearly related to Arachnis Bl. 

 Two species are known to be natives of the Philippines. It is also 

 represented in Burma, China, New Guinea, and the Liukiu 

 Archipelago. 



1. Vandopsis leytensis sp. nov. Herba epiphytica usque ad 

 4 dm. alta. Caules ± 6 dm. in diametro, rigidi. Folia disticha, 

 valde coriacea, ligulato-oblonga, vel elliptico-oblonga, ad apicem 

 insequaliter biloba, lobis obtusis, ±10 cm. longa, ± 3 cm. lata, in 

 sicco valde rugosa. Vagina? foliorum laxe adpressas, supra dilatatas, 



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