NovEMBER 15, 1907] A FascicLE oF TavaBas Fias 248 
spots, or frequently the figs are numerously clustered upon 
short leafless branchlets, subglobose, less than 1 cm. in 
diameter, the umbilicus only slightly raised, the base abrupt- 
ly constricted into a slender 5 mm. long stalk; peduncles 
3 mm. long, terminated by 5 triangularly acute bracts; 
flowers male, fertile female, and gall in the same recepta- 
cle; staminate flowers monandrous, rather numerous beneath 
the umbilical scales, a few scattered throughout the inner 
surface of the syconium, 3 mm. long, glabrous, upon a 0.75 
mm. long pedicel; its perianth segments free and subpersistent, 
narrowly acuminate, about 2 mm. long, usually only 8, brown, 
glabrous; filaments maroon colored, fleshy, 0.5 mm. long, 
easily detached; anther 1 mm. long, 0.75 mm. wide, with 
truncate ends, rigidly inserted upon the thick connective, 
doughy white; the gall flowers upon 1 mm. long stalks, 
surrounded by 3 narrow submembranous segments which are 
united around the stalk but very easily separating from it 
and becoming detached from the syconium; its ovary invest- 
ed with a thin brown membrane, obovoidly ellipsoid, 1.24 
mm. long; style subterminal, slender, erect, bearing a minute 
stigma, less than 0.5 mm. long; fertile female flowers very 
similar, much more numerous and surrounded by similar 
perianths. 
Type specimen 9376, A. D. E. Elmer, Lucban, Province 
of Tayabas, Luzon, May, 1907. This rare species was en- 
countered only once on a dry ridge climbing a half dead 
tree on Mount Banahao at 900 meters. Named in honor 
of Dr. Otto Warburg who collected and described a number 
of our Philippine Ficus. In some particulars it agrees with 
F. pisocarpa Blm. but in others not at all Again, it has 
some affinities to F. bataanense Merr. 
III. SYNOECIA. 
15. F. megacarpa Merr. in Govt. Lab. Publ. 17; 14, 1904. 
Specimens 7471 and 7827, A. D. E. Elmer, Lucban, 
Province of Tayabas, Luzon, May, 1906 and 1907 respectively. 
Chiefly known to occur in the forests of the foothills of 
Luzon. There seems to be a great variation of foliage or 
else more than one form exists. The figs of this species 
are always globose, the larger ones 7 cm. in diameter. . 
