284 The Philippine Journal of Science 1916 



MACARANGA Thouars 

 MACARANGA ROBINSON 1 1 sp. nov. § Inermes. 



Arbor glabra circiter 8 m alta ; f oliis chartaceis, oblongis, inte- 

 gris, usque ad 16 cm longis, acuminatis, basi acutis vel obtusis, 

 in pagina superiore 2-glandulosis, subtus eglandulosis, costa 

 ciliata, nervis utrinque circiter 11, prominentibus, petiolo 2.5 

 ad 5.5 cm longo; paniculis 9 axillaribus, tenuibus, ut videtur 

 paucifloris, usque ad 10 cm longis, bracteis minutis, lanceolatis, 

 integris, eglandulosis ; f ructibus glabris, inermis, globosis, 4 mm 

 diametro, 1-locellatis. 



A glabrous tree about 7 m high. Branches and branchlets 

 slender, terete, reddish-brown, glabrous, or the very young parts 

 at the tip somewhat furfuraceous-lepidote. Leaves alternate, 

 oblong, chartaceous, 10 to 16 cm long, entire, penninerved, oliva- 

 ceous and somewhat shining when dry, the lower surface ciliate 

 on the midrib, otherwise glabrous, apex slenderly acuminate, 

 base acute to blunt, rather prominently 2-glandular on the upper 

 surface near the insertion of the petiole, the lower surface a little 

 paler then the upper, shining, not at all glandular ; lateral nerves 

 about 11 on each side of the midrib, slender, prominent, curved- 

 ascending, anastomosing; petioles 2.5 to 5.5 cm long. Pistillate 

 panicles axillary, slender, apparently few-flowered, up to 10 cm 

 long, the bracts lanceolate, acuminate, entire, eglandular, about 

 1.5 mm long, the pedicels slender, about 5 mm long. Capsules 

 globose, 5 mm in diameter, 1-celled, 1-seeded, dehiscent, glabrous 

 or obscurely glandular. 



Amboina, Hitoe messen, Rel. Robins. 1721, November 5, 1913, in forests, 

 altitude about 125 meters. 



A characteristic species apparently belonging in the section Inermes Pax 

 & Hoffm., the three species placed here being from the Philippines and 

 New Guinea. Of the three known species it is most closely allied to 

 Macaranga inermis Pax & K. Hoffm. of New Guinea, from which it is 

 distinguished by numerous characters, notably its differently shaped, nar- 

 rower, prominently acuminate leaves, which are not glandular beneath, 

 and its glabrous capsules. 



MACARANGA sp. 



Amboina, Way uri, Rel. Robins. 1722, September 9, 1913, on cliffs along 

 rivers, altitude about 40 meters; locally known as picha piring puti. 



A characteristic species apparently belonging in the same group with, 

 and allied to, Macaranga leytensis Merr. Unfortunately the specimen is 

 very immature; the inflorescence is well formed, but not sufficiently de- 

 veloped to determine whether the plant is a pistillate or a staminate one. 



