312 The Philippine Journal of Science 1919 
fruiting perianth unchanged; and by the small, ellipsoid, plu- 
ricostulate fruits, having in the pericarp a double series only of 
very rigid robust fibers. 
9. ARECA VIDALIANA Bece. in Philip. Journ. Sci. 2 (1907) Bot. 222. 
Areca mammillata Becc. op. cit. 220. 
PALAWAN, Vidal 3955 in Herb. Bece. Areca mammillata Becc. was also 
collected in Palawan, For. Bur. 3816 Curran, 1906, in swampy places along 
the Sariban River; Taytay, Merrill, Phil. Pl. 1464, May, 1913. 
I previously considered the plant collected by Curran in Pala- 
wan and named by me Areca mammillata to be a species distinct 
from A. Vidaliana, because the specimens at that time at my 
disposal presented some remarkable differences in the leaves, 
the segments being 3- or 4-costulate in A. Vidaliana and 1-cos- 
tulate in A. mammillata; but after the inspection of more com- 
plete material I have found that in A. Vidaliana the character 
derived from the number of main costae in the leaflets is a very 
variable one, and that the flowers and fruit offer no differences 
in the two plants. Areca Vidaliana is very similar in habit to 
A. triandra, but its male flowers are always 6-androus, and not 
8-androus as is the case in the latter. 
10. ARECA HUTCHINSONIANA Becc. nom. nov. 
Areca mammillata Becc. var. mindanaoensis Becc. in Philip. Journ. 
Sci. 4 (1909) Bot. 602. 
A slender palm. Stem about 3 cm in diameter. Leaves about 
1 m in length. Leaflets numerous, subequidistant, 4 to 6 cm 
apart on each side of the rachis, usually bicostulate, but at 
times 1- to 4-costulate, falcate-sigmoid, slightly attenuate at 
the base, and gradually narrowed upward to a long, linear, 
caudate tip, when unicostate, 2 em, when bicostulate, 4 to 4.5 
cm broad; the 3- or 4-costulate leaflets are, of course, propor- 
tionally larger; the two of the apex are united by their bases, 
truncate and almost praemorse, and with as many incisions as 
there are costae; the resulting primary teeth are shallowly and 
obtusely 2-toothed. Spadix broadly panicled, twice branched, 
its pedicellar part very short and flattened, 10 to 15 mm long; 
the main branches, after the fall of the male flowers, are spread- 
ing and devaricate; the lowest branches are the largest, 15 to 
20 cm long or more, and are unilaterally divided into several 
small secondary or floriferous branchlets, each of which carries 
in its basal part one or two sessile female flowers, and is very 
slenderly filiform in its upper part; this part is unilaterally and 
very closely notched, and carries two male flowers at each notch. 
The male flowers are very small, 2 mm or slightly longer, lan- 
ceolate, acute or bluntish; the calyx is very small, trigonous, 
