LEAFLETS ON PHILIPPINE BOTANY 
EDITED BY A. D. E. ELMER, A. M. 
MeL L Manila, P. L, April 12, 1906. Art. 3. 
ADDITIONAL NEW SPECIES OF RUBIACEAE 
BY 
A. D. E. ELMER. 
— 0 
Argostemma quadripetiolata n. sp. Low rupestrine herbs, 
1 dm. high or less; stems usually decumbent, several 
from the base but otherwise unbranched, glabrous. Leaves 
distichous, dark green above and with few short strigose hairs, 
much paler beneath and yellowish pulverulent, subsessile, 
ascendingly arranged, the larger leaves alternatingly opposed 
by much shorter leaves, 3 to 5 mm. apart, larger blades 
8 mm. long and 4 mm. wide, apex obtusely pointed, base 
acute or obtuse, oblong with somewhat inequilateral sides, 
only the midvein visible from beneath, smaller blades 3 mm. 
long; stipule broadly ovate, sharply acute, 1 mm. high, 
subglabrous. Flowers terminal, 1 to 3-clustered, white, pen- 
dulous; calyx tube 1 to 2 cm. in length, sparsely covered 
with hyaline many jointed hairs or trichomes, yellowish 
white, funnel shaped, terminated by 4 broadly ovate or acute 
segments which are thin and subglabrous; corolla rotate, its 
4 segments united at the base, membranous, 3 to 5-nerved; 
segments broadly linear, obtuse at apex, broadest at the 
base, 6 mm. long, 2 mm. wide, glabrous; stamens 4, erect, 
connivent and encasing the style; filament 1 mm. long, 
recurved, brown and much thickened at the base of the 
anther, finely pubescent along the dorsal edge; anthers 5 
