ORCHIDACEvE 



31, 1913. Altitude 1700 meters. On trees; Vanoverbergh 1712, Novem- 

 ber 2, 1912. Altitude 1650 meters. Subprovince Ifugao, Mount Polis, 

 R. C. McGregor Bur. Sci. 19631/.. Flower yellow- buff, lower part white. 



90. GASTROCHILUS Don. 



The dismemberment of the genus Saccolabium necessitated the 

 reinstatement of Gastrochilus to receive those species which have 

 a labellum characterized by a hemispherical, wide-mouthed hy- 

 pochile and a flat, somewhat triangular, outspread epichile which 

 is more or less fringed at the margin and which gives to the la- 

 bellum the appearance of an inverted jockey cap. About sixteen 

 species are recognized from Ceylon, Sikkim-Himalaya, Burma, 

 India, Japan, Moulmein, and G. sororius Schltr. from Java. Sac- 

 colabium formosaninn Hayata, which I only know from the ori- 

 ginal description and the figure in Icones Plantarum Formosana- 

 rum (4 : 88), is a native of Arisan, Formosa, with the epichile of 

 the labellum entire. (Cf. Schlechter's Die Gattungen Gastrochi- 

 lus Don und Gastrochilus Wall in Fedde Rep. 12 : 313.) 



1. Gastrochilus philippinensis sp. nov. Radices validas. Caulis 

 9 cm. longus, 4-10 mm. in diametro. Folia disticha, ad basim im- 

 bricata, 10-14 cm. longa, 2.3-2.7 cm. lata, ad apicem inasqualiter 

 bilobata, oblongi-elliptica, ligulata, valde coriacea, vagina? folio- 

 rum arete adpressa?, caulem obtectae.Pedunculus 2.5 cm. longus, 

 incrassatus, bractea vaginata, glaber. Bracteae flores subtenden- 

 tes late ovatae, obtusa?, 2 mm. longa?, rigidse. Pedicelli 7-10 mm. 

 longi. Sepala petalaque similia, carnosa, oblongi-spathulata, ob- 

 tusa,7 mm. longa, usque ad 4 mm. lata. Labellum 5 mm. longum, 

 lobis lateralibus erectis, minutis. Hypochilium saccatum, coni- 

 cum, carnosum, 3 mm. altum. Epichilium 4 mm. longum, circi- 

 ter 6 mm. latum, echinatum, ad marginem profunde et inasquali- 

 ter fimbriatum. Gynostemium breve. 



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