376 The Philippine Journal of Science 1922 



This species has much the habit of Elatostema kalingaense 

 Merr. and, like that species, resembles in vegetative characters 

 E. contiguum C. B. Rob. It differs from Robinson's species in 

 the same characters as does E. kalingaense, and from the latter 

 species in its much thicker, very conspicuously nerved leaves, 

 the midribs and lateral nerves being strongly impressed on the 

 upper surface. 



ELATOSTEMA KALINGAENSE sp. nov. 



Herba ramosa, glabra, caulis deorsum decumbens, ramis ad- 

 presse strigoso-hirsutis ; f oliis membranaceis, lanceolatis, leviter 

 falcatis, 4 ad 6 cm longis, tenuiter caudato-acuminatis, margine 

 grosse serratis; inflorescentiis $ solitariis, sessilibus, 5 mm 

 diametro, perspicue ciliatis, bracteis liberis, exterioribus late 

 ovatis, acuminatis, 4 mm longis, bracteolis oblongis ad spatulatis, 

 ciliatis; floribus 4-meris, sessilibus, segmentis perspicue ciliatis, 

 baud comiculatis. 



An ascending, branched herb, the lower parts of the stems 

 creeping or prostrate and rooting where in contact with the sub- 

 stratum, greenish-olivaceous when dry, with numerous cysto- 

 liths, glabrous or nearly so, the younger branches appressed- 

 strigose-hirsute, rather slender. Leaves membranaceous, dark 

 green when dry, lanceolate, somewhat falcate, 4 to 6 cm long, 

 9 to 12 mm wide, the apex slenderly caudate-acuminate, the base 

 inequilateral, acute on the narrower side, rounded to obtuse on 

 the broader and longer side, the margins coarsely serrate, the 

 teeth somewhat acuminate, the upper surface with numerous ir- 

 regularly disposed cystoliths and with few, stiff, elongated, some- 

 what curved hairs from swollen bases, the lower surface slightly 

 paler than the upper, the cystoliths distinct, the midrib and 

 nerves more or less appressed-strigose-hirsute ; stipules linear, 

 lanceolate, about 2 mm long. Staminate inflorescences axillary, 

 solitary, about 5 mm in diameter, many-flowered, conspicuously 

 ciliate with grayish hairs, the bracts free, the outer ones broadly 

 ovate, acuminate, prominently ciliate, about 4 mm long; brac- 

 teoles oblong, spatulate, ciliate and nearly as long as the bracts. 

 Flowers numerous, sessile, 4-merous, the perianth segments ob- 

 long to spatulate, obtuse, 2 mm long, two somewhat cucullate, 

 none spurred, all conspicuously ciliate above. 



Luzon, Kalinga Subprovince, Mount Masingit, near Lubuagan, 

 Bur. Sci. SU93 Ramos & Edano, February 16, 1920. On 

 bowlders or ledges along streams, altitude about 1,200 meters. 



This species in vegetative characters closely approximates 

 Elatostema contiguum C. B. Rob., but differs radically in its 



