ORCHIDACEM 



91 



rill (no. 4584). — Alt. 8200 ft., Mt. Halcon, Mindoro, November 

 20, 1906, E. D. Merrill (nos. 5509, 5831). 

 Endemic. 



13. D. MINDORENSE sp. nov. Pseudohidbi graciles, paula- 

 tim fastigati ad apicem, 4 cm. longi. Folia lanceolata, ± 12 cm. 

 longa, 1.5-2.5 cm. lata (in aliquibus formis 1.2 cm. lata), obtusa. 

 Petiolus ± 2.5 cm. longus, gracilis. 

 Peduncidus gracilis, ± 1 dm. longus 

 in anthesi(extendens maturando fruc- 

 tus?). Racemus 5 cm. longus. 

 Bractece late ovatae, obtusae, 4 mm. 

 longae, pedicello cum ovario longio- 

 res. Sepala lateralia lanceolata, 

 acuta, 3-nervia, 4.5 mm. longa, 1.5 

 mm. lata. Sepalum supe?mis ob- 

 longi-lanceolatum, 4 mm. longum, 

 lateralibus angustius. Petala rhom- 

 bico-ovata, obtusa, 3.5 mm. longa. 

 Labellum 3-lobatum, 1.5 mm. lon- 

 gum; lobi subaequales; lobi latera- 

 les oblongi-falcati, obtusi, ± 1 mm. lati ; lobus medius 1 mm. 

 longus, triangularis. Ad basim lobi utrique lateralis in margine 

 interiore et in depressione disci callus, vel papilla. Columna 

 sectionis. 



DeNDROCHILCM MINDORENSE 



Among the material on which the above species is based, were 

 several plants with linear-lanceolate leaves. The flowers appeared 

 to be the same as those of the broad-leaved form. D. mindorense 

 is allied to D. recurvum Ames, from which it is readily distin- 

 guishable by means of the very different labellum. 



Mt. Halcon, Mindoro, November, 1906, E. D. Merrill (nos. 

 5795, 5729). 



14. D. ANFRACTUM Ames supra, p. 12, t. 21. — Acoridium 

 anfractum Ames Proc. Biol. Soc. Wash. 19 : 148 (1906). 



