Robinson : Alabastra philippinensia 73 



1 1-14 mm. loni^, pink-lilac, oblon<; or obovate, shallowly 3-l()bcd 

 at the apex, acuminate, apiculatc : stamens 8, alike, about 2.5-3 

 mm. lone, the filaments somewhat dilated towards the ba.sc, 

 anthers 0.6-0.7 mm. long, elliptic-obovate, obcordate, downward 

 prolongation of the connective very short : .style 4 mm. long : fruit 

 unknown. 



A slender herb, simple or sparingly branched, erect or some- 

 what prostrate, 6-15 cm. high ; stem winged above, angled below : 

 leaves membranaceous, opposite, ovate, obtuse and mucronate at 

 the apex, acute to rounded at the base, variable in length, attain- 

 ing 3 cm. inclusive of the slender 4-5 mm. long petioles, 3-ncrved, 

 dentate-ciliate on the margins, and with one or rarely two rows on 

 each side of the midrib of whiti.sh hairs exceeding i mm. in length 

 and about 2 mm. apart. 



Type collected by R. S. Williams, no. I2-/6, on Mount Santo 

 Tomas, Province of Benguet, northern Luzon, m flower, July i, 

 1904; also at the same locality, no. ijjo, October 12, 1904; 

 also represented by E/wcr 8806, Baguio, Province of Benguet. 

 Mr. Merrill has already reported it from Mount Halcon, Mindoro, 

 and has further supplied me with the following additional data 

 regarding its occurrence in northern Luzon : ^8og Merrill, Pauai, 

 30 miles north of Baguio, Province of Benguet, mossy forest at 

 6800 ft. ; .^608, 44gi Merrill, Mount Data, Province of Lepanto, 

 on earth, prostrate logs and mossy tree-trunks, in mossy forests at 

 7000 ft. 



CLETHRACEAE 



Clethra Williamsii sp. nov. 



Inflorescence a terminal panicle, composed of 7-12 racemes, 

 15-20 cm. in length, all its branches, the bracts, pedicels, and 

 calyx densely covered with gray tomentum interspersed with very 

 frequent, rust-colored, stellate hairs i mm. or less in length, the 

 latter scantily developed on the pedicels, but dense on at least the 

 margins of the calyx-lobes : pedicels about 3.5 mm. long, slender, 

 broadest at the base, tapering to the apex, ascending or spreading, 

 bracts linear, 4 mm. long, not early deciduous : calyx about 3 mm. 

 long, its lobes 2 mm. long, ovate, obtuse at the apex : corolla- 

 lobes broadly oval to suborbicular, 3-4 mm. long, 2.5 mm. wide, 

 broadest at the middle ; stamens nearly equaling the corolla, the 

 anthers diverging above : ovary also tomentose ; style becoming 

 exserted, expanded at the slightly three-lobed stigma. 



A tree, about 9 m. high and 12.5 cm. in diameter; bark of 



