hi addition to the above numbers, most of which are eited in the 

 present paper, approximately 3,000 sterile numbers bave been received 

 from Lamao in the past two years, from the collections of Borden, Meyer, 

 and Whitford. Sterile material was collected by the former two in pros- 

 ecuting certain investigations for the Forestry Bureau, while that secured 

 by Whitford was for the purpose of determining the constituent species 

 of certain areas, and is discussed by him in bis forthcoming paper. This 

 material is not considered in the present paper except in a few instances 

 when it was derived from certain species which could accurately be iden- 

 tified, and which were not found in flower or fruit. 



It is admitted that a considerable percentage of the species actually 

 found within the limits of the reserve is not enumerated. In some cases 

 material sent to specialists has not been identified by them in time to be 

 incorporated in the present paper and, as their reports have not been 

 received, the author has not felt at liberty to work on such material. In 

 other cases, such as in the Euphorbiacm, several species are represented 

 by imperfect specimens which, at present, render accurate identification 

 impossible. In the sterile material collected by Borden, Meyer, and 

 Whitford and not found in fruit or flower, a certain proportion of 

 species occur which I have been unable even to refer to their proper 

 families. Owing to the methods employed in collecting, many species 

 are now represented in our herbarium by numerous specimens, while 

 others, rather common at Lamao, by but one or two. It is very probable 

 that some common species, especially of herbaceous and weedy plants, 

 are still unrepresented in our collections, and that future botanizing in 

 this region will add a considerable number to the present list. 



Warburg, Yidal, and Leber have collected on Mount Mariveles, but 

 all three apparently used the town of Mariveles as a base and none of 

 them entered the limits of the Lamao Forest Reserve, unless it might 

 possibly have been along the upper boundary ridges, above an altitude 

 of 1,000 meters. Vidal's specimens from Mount Mariveles are cited 

 in his "Revision de Plantas Vasculares Filipinas," some of Warburg's in 

 his "Monsunia," and some in Perkins' "Fragments Flora? Philippine" 

 and other papers by various authors. Leber's material, although it is in 

 greater part identified, has been hut little cited, as it has been collected 

 at a comparatively recent date. Mr. R. S. Williams, collector for the 

 New York Botanical Garden, spent several months at Lamao in 1903-4. 

 lie made an extensive collection within the limits of the Lamao Forest 

 Reserve, but bis material is at the New York Botanical Garden and it 

 has not, as yet, entirely been classified, so that if is not available for 

 enumeration in the present paper. 



SEQUENCE AND NOMENCLATURE. 



The sequence of families and genera is that adopted by Fngler ami 

 Prantl in their Natiirlichen Pflanzenfamilien, and without exception the 



