xu, C,6 Merrill: New Philippine Melastomataceae 841 
smooth, glabrous, the ultimate ones 1.5 to 2 mm in diameter. 
Leaves coriaceous or subcoriaceous, elliptic, equally narrowed 
to the acute base and acuminate apex, 6 to 8 cm long, 2.5 to 
3 cm wide, greenish or brownish when dry, dull or slightly 
shining, of about the same color and minutely verruculose on both 
surfaces, glabrous or very sparingly lepidote along the nerves 
on the lower surface, the base acute or decurrent-acuminate, 
prominently 3-nerved, the nerves extending to the apex, the apex 
rather prominently acuminate; transverse nerves slender, the 
ultimate reticulations indistinct; petioles glabrous, 1 to 1.5 em 
long. Panicles terminal, about 3 cm long, castaneous-lepidote 
or furfuraceous, few-flowered, the flowers crowded on the ulti- 
mate branchlets, 5-merous. Bracts membranaceous, sparingly 
lepidote, oblong to oblong-ovate, 3 to 4 mm long. Calyx-tube 
about 3 mm long, sparingly furfuraceous, cup-shaped, the lobes 
somewhat reniform, about 1 mm long. Petals orbicular, pink 
to white, 3 mm in diameter. 
Luzon, Tayabas Province, Mount Binuang, back of Infanta, Bur. Sci. 
28646 (type), 28780 Ramos & Edaito, May, 1917, in forests, altitude appa- 
rently about 1,000 meters. 
This species is manifestly allied to Astronia subcaudata Merr., the type of 
which was from the same locality. It is distinguished from that species 
especially in its thicker and verruculose leaves which are 3-nerved rather 
than 3-plinerved; by its castaneous, smooth branchlets; and by the ultimate 
reticulations of the leaves being very obscure, not conspicuous as is A. 
subcaudata. 
ASTRONIA TETRAGONA sp. nov. 
Arbor circiter 10 m alta, ramulis ultimis crassis, circiter 1 
cm diametro, distincte 4-angulatis vel junioribus anguste 4-alatis, 
dense minuteque cupreo-lepidotis; foliis ellipticis, usque ad 28 
cm longis, acuminatis, basi acutis, perspicue triplinerviis, supra 
glabris, pallide viridis, subtus uniformiter et dense lepidotis, 
pallide brunneis; paniculis circiter 15 cm longis, pyramidatis, e 
basi ramosis, floribus in ramulis ultimis subglomeratim confertis. 
_ A tree about 10 m high, the branches stout, distinctly 4-angled, 
the ultimate ones about 1 cm in diameter, the younger ones 
sometimes distinctly 4-winged, all parts densely and minutely 
cupreous-lepidote. Leaves firmly chartaceous or subcoriaceous, 
brittle when dry, elliptic, 20 to 28 cm long, 12 to 18 cm wide, 
acuminate, base acute, prominently 3-plinerved, the upper sur- 
face pale greenish when dry, shining, glabrous, without cysto- 
liths, the lower surface densely and uniformly lepidote with 
small, pale-brownish scales; basal nerves leaving the midrib at 
from 1 to 1.5 cm above the base, very prominent, extending 
quite or nearly to the apex, a faint secondary pair present close 
