a 
MARCH 20, 1909] Tax Genus HYDROCOTYLE 629 
This is chiefly found along slow flowing streams or about 
springs in the grass lands about Baguio. It has also been 
collected in Formosa. Number 919 Mrs. Clemens from central 
Mindanao is very doubtfully -referred here. 
Nearest related to H. tripartita R. Br., an Australian species. 
3. H. delicata Elm. n. sp. 
A very delicate densely matted herb. Stems and branches 
numerous, slender, glabrous, rooting at the nodes, bracts sub- 
tending the branches and, petioles minute. Leaves solitary from 
each node, alternate 3 to 7 mm. across, with very obscure 
crenate teeth and 3 to 5-lobate, glabrous, flaccidly thin, very 
faintly 3 to 5-nerved from the base. Peduncle 10 to 15 mm. 
long, suberect, similar to the petiole, leaf opposed; fruiting 
heads 2 mm. in diameter, globose, about 7 seeded; the very 
short subpersistent pedicels subtended by minute bracts; seeds 1 
mm. wide, 0.75 mm. long, smooth; carpels straight along the 
commissural ridge, each side with a lateral ridge, only 1 along 
the dorsal edge; stylopodium very minute; styles proper strongly 
divergent, extremely short, bearing a minute terminal stigma. 
Type spécimen 8895, 4. D. E. Elmer, Buguio, Province of 
Benguet, Luzon, March, 1907. | 
Densely and evenly eovering rock surfaces along the Sablan 
river. Only seen once, very rare in our locality. It has also — 
been collected on mount Apo, Mindanao, by Dr. Copeland. 
Number 4352 Merrill from Benguet province is a robust form — 
and may prove to be a different species. 7 
4. H. rotundifolia Roxb. 
Most common throughout the Philippines. -y 
Both the two new Philippine species described above bes d 
been confused with this species, but H. benguetensis Elm. has no 
ridges on its fruits; while the larger leaves and more numerously c^ 
flowered heads distinguish it from H. delicata Elm. 
5. Me javanica Thurb. | = 
It has larger more membranous aver than the last, ‘nd a 
differently marked cnp than the first. So far ads known : 
om Mindanao. 
THE es ek: PRESS. iia, | 
