322 
MERRILL. 
2. Quercus jordanae Laguna Apuntes Sobre Nuev. Roble de Filip. (1875) 
7, cum lamina ; F.-Vill. Nov. App. (1883) 208; Vid. Rev. PL Vase. Filip. (1886) 
264; Ceron Cat. PI. Herb. (1892) 165. 
Q. vidalii F.-Vill. Nov. App. (1883) 209; Vidal Sinopsis Atlas XLI (1883) 
t. 92, f. B. ; Ceron Cat. PL Herb. (1892) 104. 
Q. caraballoana F.-Vill. Nov. App. (1883) 209; Vidal 1. c. 265; Ceron 1. c. 165. 
Q. havilandii Von Seem, in Perk. Frag. FI. Philip. (1904) 42, non Stapf. 
Q. sundaica Merr. in Philip. Journ. Sei. 1 (1906) Suppl. 41. non Blume. 
Luzon, District of Lepanto, Mount Data, Merrill 4550, November, 1905 ; Loher 
4873: Province of Benguet, Pauai, Bur. Sci. 4407, 4480 M earns, August, 1907; 
Mount Tonglon (Santo Tomas), Williams 1321, 1365, October, 1904; For. Bur. 
5009 Curran, August, 1906; Baguio, Lardisabal 7, 1901: Province of Bataan, 
Mount Mariveles, For. Bur. 1253 Borden, July, 1904; Whit ford 1186 , March, 1905: 
Province of Tayabas, Mount Banajao, For. Bur. 7912 Curran & Merritt, November, 
1907 ; Elmer 7903, May, 1907. 
Quercus jordanae Laguna, as here interpreted, is a rather variable species, 
but after examining the above series of specimens I have concluded that all are 
referable to one species. Q. jordanae was placed by its author in the section 
Cyclobalanus, but all the specimens cited above are manifestly of the section 
Pasania. The species as figured by Laguna has relatively broader leaves than 
has Quercus vidalii as figured by Vidal, but the indumentum seems to be nearly 
the same in both, as well as the shape of the base and apex of the leaves, and the 
venation. I have seen the type number of Quercus vidalii in Herb. Kew (Vidal 
617 bis), and it is well matched by the specimens from Mount Mariveles, cited 
above. His specimen was from the same region as the type of Quercus jordanae, 
the Caraballo Mountains, in central Luzon. The specimens from Lepanto and 
Benguet differ from those of Mount Mariveles and Mount Banajao in having 
somewhat more coriaceous and slightly more pubescent leaves, and rather more 
pubescent involucres, the. scales being also more prominent, but good differential 
specific characters appear to be lacking. Vidal 1814, in Herb. Kew, which was 
mentioned by Stapf in the original description of Quercus havilandii 10 as pos- 
sibly referable to the Bornean species, is almost certainly referable to the species 
here considered as Q. jordanae, but the specimen is without flowers and fruit, so 
that its absolute identification will always be more or less doubtful. I do not 
consider it to be the same as Q. havilandii. Quercus caraballoana F.-Vill., to 
which Vidal refers his No. 618bis, is surely the same as Q. jordanae (Q. vidalii), 
although the specimen does not appear to be extant, as I could not find it in the 
Kew herbarium. F.-Villar’s description however applies very closely to the speci- 
mens above cited, while Vidal 11 states that it appeared to him to be very close to 
Laguna’s species, giving only some trivial characters by which it could be dis- 
tinguished. Quercus sundaica Bl., was admitted by me 12 on the strength of iden- 
tifications made by 0. Von Seemen, but Bl nine’s species is quite different, its leaves 
having about 15 pairs of lateral nerves, while Q. jordanae has but 9 or 10 pairs. 
A specimen in the U. S. National Herbarium, Lardisabal 7, was identified at 
Berlin as Quercus pruinosa Blume, but this is a manifest error, as Q. pruinosa 
has quite different fruits, and differs from Q. jordanae in many other characters. 
The specimen determined by Von Seemen as Quercus havilandii,'' 3 Loher 4873, is 
not Stapf’s species, but is the same as the other specimens from Lepanto and 
Benguet here referred to Q. jordanae. 
10 Trans. Linn. Soc. Bot. II 4 (1894) 231, pi, 18, f. A, 
11 Rev. PI. Vase. Filip. (1886) 265. 
12 This Journal 1 (1906) Suppl. 41. 
13 Perk. Frag. FI. Philip. (1904) 42. 
