ORCHIDACEM 



57 



ADENOSTYLIS BL 



A. (§ Monochilus) LUZONENSIS sp. nov. Herba ± 2 dm. 

 alta, gracilis vel robusta, supra pubescens. Folia magis minusve 

 ad medium caulem conferta, 

 inanthesiinfimadecidua. Bases 

 foliorum vaginantes scariosae, 

 amplae, in petiola brevia gracilia 

 contract*. Lamina ovato-lan- 

 ceolata, acuta, 2-5.5 cm. longa, 

 1.4-2.6 cm. lata, glabra. Brac- 

 teai lanceolato-oblongae, acutae, 

 1 cm. longae. Bracteai inflo- 

 rescentiai lanceolatae, acutae, 

 sparse pubescentes. Flores 10- 

 12 vel plures, in racemo laxo. 

 Pedicelli, ut videtur, nulli. 

 Ovarium 1 cm. longum, gla- 

 brum. Sepala lateralia ovato- 

 lanceolata, 1-nervia, acuta, circa 

 5 mm. longa. Sepalum dor sale 

 simile, cum petalis membrana- 

 ceis connivens. Petala oblonga, 5 mm. longa, 2.5 mm. lata, ad 

 apicem oblique truncata, ad basim contracta, 1-nervia, nervo mar- 

 gini posteriori approximate. Labellum ad basim saccatum vel 

 valde concavum, super medium constrictum, ad apicem in laminam 

 triangularem dilatatum dente minuto terminali ; per medium sac- 

 cum carina elevata in callum tuberculiforme desinens; ad basim 

 sacci utroque appendix carnosa pedicellata ; margo sacci mem- 

 branaceo-alatus. 



ADENOSTYLIS LUZONENSIS 



Terrestrial, sepals brownish to brownish pink, petals whitish, 

 Mt. Data, Distr. Lepanto, Luzon, October 29, 1905, E. B. 

 Merrill (no. 4604). — Mt. Santo Tomas, Prov. Benguet, northern 

 Luzon, October 29, 1904, B. S. Williams (no. 1924). 



