356 
ROBINSON. 
APOCYNACEAE. 
ALYXIA R. Br. 
Alyxia monticola sp. nov. 
Scandens, Alyxiae luzoniensi Merr. admodum similis, sed differt foliis 
majoribus longius petiolatis magis acuminatis magis conspicue venosis, 
et ramis crassioribus. 
Cymes axillary, few-flowered : flowers unknown : peduncles stout, about 
1 cm long, brown-tomentose ; pedicels strongly 4-angled, 3 mm long, 2 
min wide, tomentose; bracts at base of calyx 2, ovate, obtuse, 3 mm long; 
calyx deeply 5-parted, the segments similar to the bracts but slightly 
longer, pubescent on the costa and margins; stipe of fruit 6 mm long, 
pubescent, the fruits oval in outline, not constricted, up to 22 mm long, 
12 mm in diameter. 
A woody vine, the branches about 5 mm in diameter at the base, the 
bark drying yellowish-green to dark-brown, the vegetative parts glabrous : 
leaves in whorls of 4 or 5; petioles 8 to 10 mm long, 1.5 to 2 mm wide; 
lamina subcoriaceous, oblong or oblong-oblanceolate, 8.5 to 14.5 cm long, 
2.5 to 4.8 cm wide, the base acute and deeurrent, the margins- slightly 
revolute, the apex abruptly contracted into an obtuse or subacute acumen 
8 to 12 mm long; pairs of veins about 50, nearly straight, terminating 
in a slender lateral vein about 1 mm from the margin, the lamina espe- 
cially when viewed from the upper surface appearing distinctly margined. 
Luzon, Province of Tayabas (Infanta), Mount Binuang, in mossy forest at 
840 m elevation, Bur. Sci. 9359 Robinson. The nearest alliance of the species 
seems to be with A. luzoniensis Merr., but it differs by the characters noted 
above. The leaves more nearly resemble those of A. monilifera Vidal, but the 
structure of the fruit is conspicuously different, not constricted, and the size of 
its single compartment much greater than that of those of A. monilifera. 
LABIATAE. 
ACROCEPHALUS Benth. 
Acrocephalus spicatus sp. nov. 
Herba, caule tetragono : floribus in capitulis terminalibus interrupte 
vel subconfluenter spicatis congestis; foliis anguste ellipticis vel anguste 
lanceolatis, grosse serratis, in pctiolum marginatum decurrentibus. 
Inflorescence terminal, composed of about 8 interrupted of almost 
confluent spicate or subspicate heads, or on young branches in single 
heads, subtended by leafy bracts, the lower 12 mm long, 8 mm wide, de- 
creasing toward the apex; flowering bracts about 3 mm in diameter, 
suborbicular, acuminate, densely glandular, the outer surface white- 
villose along 10 to 12 lines near the base, the margins ciliate, each sub- 
tending about 10 flowers : calyx tubular, at anthesis the posterior lobe 
entire, elliptic, about 2.4 mm long, rounded at the apex, ciliate on the 
