PLANTS COLLKCTKD BY WII.KlOvS EXPEDITION. 75 



by Messrs. Pickering and Eld and then returning to Manila. Botanical 

 collections v/ere made by both parties. Leaving Manila, January 20, 

 the expedition sailed southward, the next place where collecting was 

 done being Caldera near Zamboanga, Mindanao, a portion of January 31 

 being spent there. From Caldera tlie ship proceeded, to Soung (now 

 Jolo) on the Island of Sulu or Jolo, and February 4 and 5 were spent 

 tliere and on Marongas Islet, but because of the unfriendly attitude of 

 the natives little collecting could be done except along the beach. Leaving 

 Jolo they then proceeded across the Sulu Sea, making no stop until the 

 Mangsee (Mangsi) Islands, two small islands between the larger ones of 

 Balabac and Banguey, were reached, where they remained from Fel)- 

 ruary 8 to 12, the expedition then proceeding through Balabac Strait 

 to Singapore. 



In 1836, Asa Gray was tendered and accepted the appointment of 

 botanist to the expedition, but in 1838, because of delays in the start, 

 and other work- claiming his attention, he resigned. In 18-18, some 

 time after its return, he was appointed to work up the reports of the 

 flowering plants and estimated that this report would fill three volumes 

 of text. However, only one volume of Gray's part appeared, although 

 we learn from his letters tliat as late as 1858 he was still working on the 

 manuscript of additional portions which never were published. Moreover, 

 there are many specimens in the United States National Herbarium 

 bearing his manuscript names of species that have not as yet been pub- 

 lished, most, if not all of which, so far as Philippine plants are concerned, 

 are now antedated in publication by the names of otlier authors. In 

 volume 15 (Phanerogamia, vol. 1) one hundred and four species of 

 Philippine plants are enumerated of which fifteen were described as new ; 

 these are considered in the present paper. 



While I was in Washington in July and August, 1907, I had an 

 opportunity of examining the Wilkes Expedition specimens in the United 

 States National Herbarium, and later, search was made in the Gray 

 Herbarium at Cambridge and in the Herbarium of Columbia University, 

 now at the New York Botanical Garden, for specimens whicii could not 

 be found at Washington. Still later, in Noveml^er and December of the 

 same year, an opportunity occurred of comparing my critical notes, 

 sketclies, photograplis, etc., with various types in the herbaria of the 

 Eoyal Gardens at Kew and of the British Museum. As a result of the 

 examination of the above material it has been considered worth while 

 to complete my notes and prepare the accompanying list for publication. 



Tlie most complete set of AVilkes Expedition plants is preserved in the 

 United States National Herbarium at Washington, l)ut even it lacks manv 

 specimens. Partial sets are to be found in the Gray Herbarium at Cani- 

 bridge, and in the Herbarium of Columbia University, and tliere are 

 a few sheets at the Koyal Gardens, Kew, England. Representatives of 



