306 The Philippine Journal of Science 1919 
2. ARECA MACROCARPA Bece. in Philip. Journ. Sci. 4 (1909) Bot. 601. 
MINDANAO, Zamboanga District, Port Banga, For. Bur. 9108 Whitford & 
Hutchinson, January, 1908. _ 
This seems to be a close ally of Areca Catechu, but unfortu- 
nately its male flowers are not known for a precise comparison 
with the latter. Its fruit, however, is considerably larger than 
that of A. Catechu, from which it is further distinguishable by 
its being equally tapering at both ends, twice as long as broad; 
by the seed inserted very high, or somewhat above the lower 
third of the entire fruit; by the ovoid-conical seed with flat base; 
and by the vascular branches of the integument ascending in 
great numbers from the raphe and arching on the sides at an 
angle of 45°, forming there a rather close network. In the 
only seed I dissected, the embryo was globular-depressed, where- 
as it is conical in A. Catechu and all its varieties. The fruiting 
perianth is distinctly campanulate. 
8. ARECA WHITFORDI! Becc. in Philip. Journ. Sci. 2 (1907) Bot. 219. 
MINDORO, in the semiswampy forests called “guipa” by the natives, near 
sea level, Bongabon River, Whitford 1372, Tagalog, bungan gubat. 
I formerly supposed that Areca Whitfordii was related to 
the species having male flowers with three stamens; but now 
that I am in possession of additional material, although even now 
incomplete, it appears to me that its real affinities are with A. 
Catechu and especially with the variety longicarpa, because the 
floriferous branchlets of A. Whitfordii bear, as does A. Catechu, 
alternate and not unilaterally geminate male flowers as is the 
case in A, triandra and allied species; although the male flowers 
of typical A. Whitfordii are as yet unknown. It differs, how- 
ever, from A, Catechu var. longicarpa especially in its ovoid- 
ellipsoid seed, narrowed at both ends, symmetrically placed in 
the central part of the fruit, of which it occupies almost the 
entire length, the pericarp extending below and above the seed 
only 7 mm. 
ARECA WHITFORDI! Becc. var. LUZONENSIS Becc. var. nov. 
This differs from the type only in its larger fruits. The 
fruits seen by me, not thoroughly mature but apparently having 
ettained their definitive dimensions, are ellipsoid-fusiform, 5.5 
cm long, equally narrowed at both ends, and 2 cm in diameter in 
their central part. The seed, from the size and the shape of the 
endocarpal cavity, is apparently equally narrowed at both ends, 
28 mm long and 16 to 17 mm through at its middle; the portion 
of solid pericarp remaining above and below the seeds is 1 cm 
in length. The leaves have 20 to 25 pairs of leaflets. 
