20.4 Merrill: Noteworthy Philippine Plants, XVII 375 



A very strongly marked species, well characterized by its con- 

 spicuous cystoliths and its nearly entire, lanceolate, very slightly 

 inequilateral, obscurely nerved leaves. 



ELATOSTEMA EUPHLEBIUM sp. nov. 



Herba suffruticosa, erecta, ramosa, caulis teretibus, 4 ad 5 

 mm diametro, ramis adpresse cinereo-hirsutis ; foliis lanceolatis, 

 subcoriaceis, rigidis, inaequilateralibus, 4 ad 8 cm longis, oli- 

 vaceis, caudato-acuminatis, margine acute et grosse serratis, 

 dentibus acuminatis, supra cystolithis numerosis instructis, ju- 

 nioribus plus minusve ciliatis, nervis utrinque 6 vel 7, impressis, 

 subtus valde perspicuis et adpresse hirsutis; stipulis 4 mm 

 longis; inflorescentiis $ solitariis, sessilibus vel subsessilibus, 

 usque ad 6 mm diametro, multifloris, bracteis exterioribus or- 

 biculari-ovatis, rotundatis, leviter ciliatis, liberis, bracteolis 

 angustis, ciliatis, floribus 4-meris, lobis oblongo-ovatis ad spat- 

 ulatis, 2 mm longis, haud corniculatis, 2 leviter cucullatis, 

 supra leviter ciliatis. 



An erect or ascending, much-branched, suffrutescent plant, 

 the stems distinctly woody, terete, 4 to 5 mm in diameter, the 

 branches usually 20 cm long or less, appressed-hirsute with 

 cinereous hairs. Leaves inequilateral, lanceolate, rigid, sub- 

 coriaceous, 4 to 8 cm long, 10 to 18 mm wide, olivaceous, the 

 apex caudate-acuminate, base inequilateral, acute on the nar- 

 rower side, obtuse on the broader side, the margins sharply and 

 rather coarsely serrate, the teeth somewhat acuminate, the upper 

 surface with numerous cystoliths and when young supplied with 

 numerous, stiff, white hairs, these hairs more or less deciduous 

 on the older leaves, some, however, usually persisting, their 

 bases often thickened, the lower surface paler than the upper, 

 the midribs and nerves appressed-hirsute, the cystoliths con- 

 spicuous, the midrib and lateral nerves impressed on the upper 

 surface, very prominent on the lower surface, the lateral nerves 

 6 or 7 on each side of the midrib, arched-anastomosing; stipules 

 lanceolate, acuminate, about 4 mm long. Staminate inflores- 

 cences axillary, solitary or in pairs, sessile or very shortly pe- 

 duncled, up to 6 mm in diameter, many-flowered, outer bracts 

 orbicular-ovate, about 3 mm long, rounded, somewhat ciliate, 

 free, the bracteoles narrow, ciliate. Flowers 4-merous, the lobes 

 oblong-ovate to spatulate, 2 mm long, slightly ciliate above, two 

 of them slightly cucullate, none spurred. 



Luzon, Bontoc Subprovince, Mount Pukis, Bur. Sci. 37765 

 Ramos & Edano, March 10, 1920. On forested slopes, altitude 

 about 1,800 meters. 



