260 ^^6 Philippine Journal of Science 1920 



ROSA PHILIPPINENSIS sp. nov. § Synstylae. 



Rosa multiflora Vidal Rev. PI. Vase. Filip. (1886) 123; Merr. in 

 Philip. Journ. Sci. 5 (1910) Bot. 352, non Thunb. 



Frutex suberectus vel scandens, 1 ad 4 m altus, ramis parce 

 aculeatis, ramulis perspicue capitato-glandulosis ; foliis 5- ad 

 9-foliolatis, 9 ad 12 cm longis, glabris, foliolis chartaceis, 

 oblongo-ellipticis ad oblongo-ovatis, 3 ad 5 cm longis, serratis, 

 plerumque acutis; stipulis adnatis, angustis, baud pectinatis, 

 margine capitato-glandulosis; floribus numerosis, paniculatis, 3 

 ad 3.5 cm diametro, pedicellis calycibusque extus leviter hirsutis 

 atque capitato-glandulosis, lobis oblongo-lanceolatis, caudato- 

 acuminatis, usque ad 12 mm longis, intus cinereo-villosis, mar- 

 gine plerumque integris vel lobis angustis 1 vel 2 utrinque 

 instructis ; stylis connatis, hirsutis, circiter 5 mm longis. 



A suberect or more or less scandent shrub, 1 to 4 m in height, 

 nearly glabrous. Branches armed with scattered, stout, recurved 

 spines about 4 mm in length, the branchlets conspicuously 

 capitate-glandular as are the inflorescences and calyces. Leaves 

 5- to 9-foliolate, glabrous, 9 to 12 cm long, the rachis sparingly 

 aculeate; leaflets chartaceous, oblong-elliptic to oblong-ovate, 

 mostly acute, 3 to 5 cm long, sharply serrate; stipules adnate, 

 scarcely pectinate, narrow, their margins capitate-glandular, 

 the linear, free, apical parts 3 mm long or less. Panicles ter- 

 minal, ample, somewhat leafy, many-flowered, up to 20 cm in 

 length, all parts capitate-glandular, the pedicels 2.5 to 4 cm long. 

 Flowers white, 3 to 3.5 cm in diameter. Calyx-tube somewhat 

 pubescent, glandular-capitate, about 5 mm long, the lobes oblong- 

 lanceolate, caudate-acuminate, up to 12 mm long, pubescent and 

 capitate-glandular outside, inside densely cinereous-pubescent, 

 caudate-acuminate, entire or with one or two narrow lobes on 

 each side. Petals obovate, retuse. Stamens indefinite. Styles 

 hirsute, connate, about 5 mm long. 



Luzon, Benguet Subprovince, Baguio and vicinity, Elmer 

 579^ (type), Merrill Phil. PI. 882, Bur. Sci. 2519, ^290 Mearns, 

 Sandkuhl 371, Santos lU: Bontoc Subprovince, Vanoverbergh 

 50. In thickets, gulches, etc., in the pine region, altitude 1,200 

 to 1,700 meters. 



This species has long been confused with Rosa multiflora 

 Thunb., the typical form of which is apparently confined to 

 Japan and Korea. A more critical examination of the Philip- 

 pine material than has hitherto been made shows that this form 

 is distinguishable from Thunberg's species in numerous charac- 



