6 ORCHIDACE^ 



GEOGRAPHICAL DISTRIBUTION 

 I have seen specimens from the following localities : 



Philippine Islands : Lamao River, Mt. Mariveles, Prov. Bataan, 

 Luzon, October, 1903, U. D. Merrill (no. 3209). — Lamao 

 River, Mt. Mariveles, Prov. Bataan, Luzon, May 11, 1904, alt. 

 1050 m., " native name ^ Dapo,' " Thos. E. Borden (no. 742). 

 — Lamao River, Mt. Mariveles, Prov. Bataan, Luzon, May 11, 

 1904, alt. 3200 ft., on trees and rocks, very common, H. N. 

 Whitford (no. 233). 



The species has also been ascribed to the following localities : 



Philippine Islands : Manila, Meyen, loc. cit. ; Banos, Luzon, 

 Wilkes " (etiam Mahahai, Wallis),^^ Rchb., loc. cit. — Alt. 

 3000 ft., Mt. Maquiling, Senor Vidal. — Alt. 4500 ft., in 

 fruit, Nagidiang, Prov. Benguet, Loher. 



EXPLANATION OF THE PLATE 

 Plate 1 : Acoridium sphacelatum, sp. nov., and Acoridium tenellum 



The plate was prepared from dried specimens. Details of the floral parts were 

 drawn with the aid of the camera lucida. 



1. Flowering plants of A. sphacelatum, life size. 



2. Fruit of A. tenellum, enlarged. 



3. Terminal part of the raceme of A. tenellum. 



4. Terminal part of the raceme of A. sphacelatum. 



5. PoUinia of A. sphacelatum. 



6. Anther of A. sphacelatum. 



7. Bract, A. tenellum. 8. Bract, A. sphacelatum. 



9. Dorsal sepal, A. tenellum. 10. Dorsal sepal, A. sphacelatum. 



11. Petal, A. tenellum. 12. Petal, A. sphacelatum. 



13. Sepal, A. tenellum. 14. Sepal, A. sphacelatum. 



15. Front view of hp, A. tenellum. 16. Front view of lip, A. sphacelatum. 



17. Side view of lip, A. tenellum. 18. Side view of lip, A. sphacelatum. 



19. Column, A. tenellum. 20. Column, A. sphacelatum. 



