440 The Philippine Journal of Science 1920 
An erect, simple, slender herb, 7 to 13 cm high, the leaf-bearing 
part of the stem 3 to 5 cm in length, terete, densely cinereous- 
or griseous-pubescent. Leaves opposite, those of each pair dis- 
tinctly unequal, lanceolate to narrowly lanceolate, 3 to 7 em long, 
5 to 13 mm wide, chartaceous, entire, subequally narrowed to 
the somewhat acuminate or merely acute base and apex, the 
upper surface olivaceous, slightly shining, glabrous, or with very 
few, widely scattered, very short hairs, the lower surface paler, 
densely and minutely puberulent on the midrib and nerves; 
lateral nerves about 10 on each side of the midrib, slender ; pet- 
ioles 2 to 5 mm long; stipules triangular-ovate, about 2 mm long, 
acute. Cymes few-flowered, 1 to 1.5 cm in diameter, their slender 
peduncles densely pubescent, 1.5 to 3 cm long, the branches and 
pedicels pubescent, ebracteate. Flowers about 5 mm long. Ca- 
lyx slightly urceolate, externally minutely pubescent, about 1.8 
mm long, the teeth 5, oblong-ovate, acute, 0.3 mm long. Corolla- 
tube cylindric, 3 mm long, glabrous, the lobes oblong, obtuse, 1.5 
mm long. Fruits compressed, 2 mm long, 5 mm wide, glabrous, 
crowned with the 5 minute calyx-teeth. 
LUZON, Cavite Province, Alfonso, Bur. Sci. 22591 Ramos & 
Deroy, May 11, 1915, on rocks along small streams, altitude about 
600 meters. 
This species is well characterized by its narrow, entire leaves, 
its densely pubescent simple stems, and its slenderly peduncled 
inflorescences, 
OPHIORRHIZA TENUIS Sp. nov. 
Herba tenuis, prostrata vel adscendens, plus minusve pubes- 
centibus, simplex vel distanter ramosis, usque ad 20 cm longis; 
foliis parvis, aequalibus, membranaceis, ellipticis ad oblongo- 
ellipticis, circiter 1 cm longis, utrinque acutis vel subobtusis, 
nervis utrinque circiter 4; cymis tenuiter pedunculatis pauci- 
floris, haud 1 cm diametro; floribus circiter 3 mm longis, glabris; 
capsulis compressis, circiter 5 mm latis et 2.5 mm longis, apice 
subtruncatis, glabris, obscure bilobatis, lobis rotundatis. 
A slender, prostrate or ascending, simple or distantly branched 
herb, copiously rooting at the lower nodes, up to 20 cm in length, 
the stems distinctly pubescent. Leaves in equal pairs, small, 
membranaceous, elliptic to oblong-elliptic, 8 to 138 mm long, 5 to 
8 mm wide, the upper surface olivaceous, glabrous, shining, the 
lower pale, puberulent on the midrib and nerves, subequally 
narrowed to the acute to somewhat obtuse base and apex; lateral 
nerves about 4 on each side of the midrib, slender, distinct; 
