376 ^^6 Philippine Journal of Science 1919 



ELATOSTEMA ROBINSONII sp. nov. 



Herba glabra, erecta, ramosa, 15 ad 30 cm alta; foliis nume- 

 rosis, chartaceis, viridibus, oblongo-ovatis ad oblongo-ellipticis, 

 sessilibus, 7 ad 15 mm longis, utrinque cystolithis numerosis 

 instructis, acutis, basi 3-plinerviis, inaequilateralibus, margine 

 in I inferiore parte integris, supeme dentatis, dentibus paucis; 

 inflorescentiis $ axillaribus, solitariis, in siccitate flavido-viri- 

 dibus, brevissime pedicellatis, 5 mm diametro; bracteis exterio- 

 ribus late ovatis, carinatis, vix corniculatis, vel admodum ob- 

 scure comiculatis. 



An erect, much-branched, glabrous herb, 15 to 30 cm high, the 

 stems apparently succulent when fresh, hard when dry, and about 

 4 mm in diameter, somewhat sulcate; lower branches up to 20 

 cm in length, yellowish green when dry. Leaves numerous, 

 chartaceous, green when dry, oblong-ovate to oblong-elliptic, ses- 

 sile, 7 to 15 mm long, 4 to 7 mm wide, green when dry, both 

 surfaces with numerous, large, irregularly disposed cystoliths, 

 apex acute, base inequilateral, 3-plinerved, one side rounded or 

 obtuse, the other acute, the margins entire in the lower one-half, 

 above with 3 or 4 teeth on one side and 3 to 5 on the other, the 

 teeth distinct, blunt, usually less than 1 mm long ; stipules linear- 

 lanceolate, 2 to 2.5 mm long. Staminate receptacles axillary, 

 solitary, numerous, yellowish green when dry, very shortly pedi- 

 cellate, turbinate, about 5 mm in diameter, with as many as 14 

 flowers, but few developing at one time; pedicels about 1 mm 

 long; outer two bracts very broadly obovate, densely longitu- 

 dinally striate, broadly rounded, 3.5 to 4 mm long, keeled, firm, 

 sometimes very slightly comiculate; bracteoles membranaceous, 

 oblong-obovate, about 3 mm long, somewhat thickened in the 

 median part. Pedicels in anthesis 2 mm long. Sepals 4, mem- 

 branaceous, oblong to elliptic-oblong, 2 mm long, two distinctly 

 comiculate at their apices, the other two acute. 



Luzon, Ifugao Subprovince, Mount Polls, Bur. Sci. 19727 

 McGregor, January 30, 1913, altitude not indicated. 



This species apparently belongs in the group with Elatostema 

 benguetense C. B. Rob., but is entirely different from that and 

 all other species known to me; the yellowish-green color of the 

 branchlets and staminate receptacles is very characteristic. 

 The late C. B. Robinson has indicated on the sheet "Elatostema 

 sp. nov. = Vidal 3857." 



ELATOSTEMA PILOSUM sp. nov. 



Herba erecta, sublignosa, ramosa, saltern 40 cm alta, ramulis 

 densissime pilosis, subtus foliis ad costa nervisque perspicue 



