290 MERRILL. 



in herb. Paris.), Malvar 3Jt9, Cuzner 55, Marave 30, Ahem 716: Province of 

 Rizal, Pasay, For. Bur. 15385 Curran & Schneider; Antipolo, Merrill 1720; 

 Montalban, Loher 5850: Province of Bataan, Merrill lJf8J:f, For. Bur. 1305, 

 2720 Borden, For. Bur. 2513 Meyer, Ahem 769, Williams 6^6, 632: Province 

 of Laguna, Hallier s. n. Mindoro, For. Bur. 8813 Merritt, Merrill 2160 

 (cotype of Settiecarpus sideroxyloides Perk.). Guimaras, For. Bur. 6U77 

 Everett. Leyte, Elmer 7159. Negros, Bur. Sci. 734-8 Celestino, For. Bur. 

 15159 Tarrosa. 



The common Tagalog name is ligas, the Visayan agas and anagas, the 

 Ilocano camiring, the Pampangan earning, and the Bontoc paean. 



This species is the most common and the best known contact-poison in 

 the Philippines, its noxious properties being well known to the natives. As 

 with the well known contact-poisons in the United States, such as Rhus 

 toxicodendron L., and R. venenata DC. some persons are immune while 

 others are very subject to it. The symptoms caused by contact with fresh 

 leaves of Semecarpus cuneiformis Blanco, especially when the leaves are 

 wet, are -quite like those caused by the species of Rhus mentioned above, 

 and the eruption is amenable to the same treatment. 



SEMICARPUS MICRANTHA Perk. Frag. Fi. Philip. (1904) 27. 

 Se^necarpus taftiana Perk. 1. c. 28. 



But a single species is represented, for which the name micrantha is 

 retained, this having page priority. The type of Semecarpus micrantha 

 Perk., is a specimen with staminate flowers, while the type of S. taftiana 

 Perk., is a specimen with pistillate flowers. They are from the same locality, 

 with the same habitat, and were collected at the same time, February 15, 

 1903. In inflorescence, twigs, indumentum, color, shape, and venation of 

 the leaves the specimens are quite the same. The only evident difference 

 is that the leaves of Semecarpus taftiana are somewhat smaller and 

 relatively a little narrower than are those of S. micrantha. 



Palawan, Iwahig River, Merrill 709, 3 flowers, cotype of Semecarpus 

 micrantha Perk., 734, $ flowers, cotype of Semecarpus taftiana Perk., both 

 collected February 15, 1903. 



SEMECARPUS PH ILIPPIN ENSIS Engl, in DC. Monog. Phan. 4 (1883) 

 481. 

 Semecarpus perrottetii March, var. glabra March. Rev. Anac. (1869) 

 170. 

 This species is rather common and of wide distribution in the Philippines, 

 and is decidedly variable in the shape of its leaves, although in essential 

 characters quite constant. The type of the species and of Semecarpus 

 perrottetii var. glabra March, is Cuming llJt6, from the Province of Ilocos 

 Sur, Luzon, two sheets of which are in the Herbarium of the Bureau of 

 Science. Engler" has referred to another Philippine specimen Cuming 

 1776, which was collected in Cebu, as apparently being referable to Seme- 

 carpus albescens Kurz. Specimens of this number are in the Herbarium 

 of the Bureau of Science, and while they are not identical with the type 

 number of Semecarpus philippinensis, I can, after examining a large series 

 of specimens, showing numerous intermediate forms, detect no characters 



L. c. 489. 



