252 
FOXWORTHY. 
entire. The petiole has quite a considerable variation in length. The 
fruit varies in size and shape and in length of wings, as well as in the 
degree of development of the fruit wings, which are usually quite papery 
but may be reduced to little more than ridges. There seems to be an 
almost complete series of intergrades between the typical fruit for this 
species and the very much more woody fruit of D. speciosus. It seems 
likely that these species hybridize, where they occur in the same region. 
The fruit-wings are of varying length and there may be three long wings 
developed or only one. The stipules, in the terminal bud, elongate td 
such an extent before falling that they give the plant the appearance of 
belonging to an entirely different species. I have seen these enlarged 
stipules as much as 2 l dm long. They are much" in evidence on the 
ground just after the leaves have fallen. 
D. grandiflorus is often found on dry exposed ridges up to 500 m 
above sea level, but it also does well on flat land which is more moist. 
It seems to be the principal source of the ialao or wood oil in the 
Philippines. 
It has been found in flower in the months of January, February, March, 
April, May, June and December, and in fruit in the months of January, 
February, May, June, August and September. 
Luzon, Province of Cagayan, For. Bur. 7 067 Klemme, May 1907, in flower, 
For. Bur. 13102 Bernardo, April 1909, in flower, For. Bur. 131/21 Klemme, April 
1909, in flower, For. Bur. 11,719, 11,751, Darling, For. Bur. 16925 (from Palaui 
Island), 1691,7, 16959, 1701,6, 17061, 17167, 17189 Curran, For. Bur. 181,1,1 Al- 
■ varez: Province of Isabela, For. Bur. 11,837 Darling, May 1909, in fruit: Prov- 
ince of Ilocos Sur, For. Bur. 5658 Klemme: Province of Abra, For. Bur. 11,657 
Darling, Feb. 1909, in fruit: Subprovince of Benguet, Elmer 61,53, June 1904, 
in fruit: Province of Pangasinan, For. Bur. 8335 Curran & Merritt, Dee. 1907, 
in flower, For. Bur. 131,90 Medina: Province of Nueva Ecija, For. Bur. 22372 
Alvarez: Province of Zambales, Cuming 1073, Hallier 306, For. Bur. 911, Maule, 
For. Bur. 5812, 6917 Curran, For. Bur. 6021 Aguilar, For. Bur. 8115 Curran d 
Merritt, Dec. 1907, in flower, For. Bur. 81,17 Curran & Merritt: Province of 
'Bataan, Ahern 7 55 Hereford, Whitford 8x, June 1904, in fruit, Whitford 785, 
Sept. 1904, in fruit, Williams 901,, For. Bur. 186 Barnes, Jan. 1904, in flower, 
For. Bur. 559 Barnes, For. Bur. 2908 Borden, Mar. 1905, in flower, For. Bur. 
591,1, 591,3 Curran, Jan. 1907, in flower and fruit, For. Bur. 6228 Curran, Feb. 
1907, in flower. For. Bur. 7 231 Curran, June 1907, in flower, Bur. Sci .' 1591 
Foxworthy, For. Bur. 1291,7 Alvarez, For. Bur. 20022 Topacio: Province of Bu- 
laean, Vidal 986, For. Bur. 7177 Curran, June 1907, in fruit, Bur. Sci. 12268 
Foxivorthy : Province of Rizal, For. Bur. 2867 Ahern’s; coll., Mar. 1905, in flower: 
Province of La Laguna, For. Bur. 17639 Curran, For. Bur. 22237 Mariano: Prov- 
ince of Tayabas, For. Bur. s. »., 3222, 3209 Hagger, April 1905, in flower, For. 
Bur. 10195 Curran, For. Bur. 18665 Darling: Province of Cajnarines, For. Bur. 
10717 Curran: Province of Albay, For. Bur. 10611, Curran. Mindoro, For. Bur. 
6160, 6811, 8802 Merritt. Samar, For. Bur. 12850 Rosenbluth. Negros, Gima- 
gaan River, Whitford 1586, 1622, For. Bur. 5501 Everett, For. Bur. 13595 Meyer 
d Foxwortliy , Aug. 1909, in fruit, For. Bur. 171,81, 171,86, Curran, For. Bur. 
18223' Rosenbluth, For. Bur. 15021 Danao, Mar. 190S, in flower. Palawan, For. 
Bur. 1501,5 Danao. 
