20 MERRILL. 



Bur. Sci. 7639 Ramos: Province of Zambales, For. Bur. 6501 Agmlar, Hallier 

 s. 71., For. Bur. 6334 Curran, Merrill 2926: Province of Nueva Vizcaya, 

 For. Bur. 18397 Alvarez: Province of Bataan, For. Bur. 27^6 Borden, Williams 

 688: Province of Pangasinan, For. Bur. 9634 Zschokke: Province of Bulacan, 

 For. Bur. 11137 Aguilar: Province of Laguna, Hallier s. n., For. Bur. 100^2, 

 10068 Curran, For. Bur. 7702 Curran d Mcrritt: Province of Rizal, Bur. »S'ei. 106 

 Foxworthy, Merrill 1622, SOJfS, 2330, For. Bur. 24-'fJf Ahern's collector: Province 

 of Sorsogon, For. Bur. lOSJfO Curran. Culion, Merrill 579. Palawan, Bur. Sci. 

 688 Foxworthy. Samab, For. Bur. 12883 RosenUuth. Leyte, Elmer 7114. 

 Negbos, For. Bur. 17403 Curran. 



Native names : Tugayong, narandauel, saplit (Cagayan) ; carisquis, ayamguitan 

 (Zambales) ; tugurare (Pangasinan) ; inep (Bulacan) ; malasaga, malaganip, tekin 

 (Laguna) ; bahay (Sorsogon) ; tagomtagom (Samar) ; tigue (Rizal) ; casai, mala- 

 camonsili, alobahai, ex Blanco. 



Celebes (/ide Koorders) . 



This species is exceedingly variable, but after a careful study of tlie material 

 cited above, I feel confident that all the specimens are referable to one species. 

 The variability seems to parallel that of the preceding form. As I have no 

 authentic material of Pithecolobium montanum Benth. for comparison, I am unable 

 to determine the points of difference between the two. It is barely possible that 

 P. subacutum Benth., is only a form or variety of P. montanum Benth. The two 

 species are placed bj- Bentham under separate series, Sessiliflorae and Pedicellatap, 

 but in our Philippine material the flowers appear to be indifferently pedieelled, 

 subsessile or sessile. The plate in the third edition of Blanco's "Flora de Fili- 

 pinas," cited above, well represents the species. 



9. Pithecolobium prainianum Merr. in Philip. Journ. Sci. 1 (1906) Suppl. 61, 

 1. c. 2 (1907) Bot. 276. 



Pithecolobium parvifoUum Merr. Govt. Lab. Publ. (Philip.) 29 (1905) 19, 

 non Benth. 



Pithecolobium montanum var. microphylla Benth. Trans. Linn. Soc. 30 (1875) 

 581; Vidal Phan. Cuming. Philip. (1885) 111, Rev. PL Vase. Filip. (1886) 121, 

 non P. microphyllum Benth. 



P. montanum Vid. Sinopsis Atlas (1883) t. 45, f. A. ?, non Benth. 



Luzon, District of Lepanto, For. Bur. 14488 Darling: Province of Benguet, 

 Topping 128, For. Bur. 928 Barnes, For. Bur. 4919, 10893 Curran, Elmer 5863, 

 Bur. Sci. 2713 M earns, Williams 1322, For. Bur. 18303 Alvarez: Province of 

 Pampanga, Merrill 3836: Province of Bataan, Whitford 1179, Merrill 3876, For. 

 Bur. 2790 Meyer: Province of Tayabas, For. Bur. 7837 Curran d Merritt. MlN- 

 DORO, Merrill 5702, For. Bur. 8508, 8719 Merritt. Leyte, For. Bur. 12623 Rosen- 

 bluth. 



Borneo, Java. 



This species is usually found at higher altitudes than any of the preceding ones, 

 and is frequently found in exposed ridge-forests on mountains, ascending to at least 

 1600 m. It shows a tendency to intergrade with the preceding species, tlirough 

 such forms as F^nix 3740, and Elmer 7114- On the whole, however, it appoars to 

 be fairly constant, and readily distinguishable by its very small leaflets. 



DOUBTFUL AND EXCLUDED SPECIES. 



Pithecolobium bigeminum Mart. This is credited to the Philippines by F.- 

 Villar, Nov. App. (1880) 75, and by Stapf, Trans. Linn. Soc. Bot. II 4 (1894) 144. 

 I have seen no Philippine specimens, and the typical form of Martins' species 

 probably does not oxtend to tlie Arcliipelago. 



