114 Premna. 



within except at the base; 2-lipped, 4-lobed, lobes reflexed, 

 obtuse, the midlobe of the lower lip 0.18 cM.; stamens 

 exsert, filaments twisted; style 0.6 cM., stigma bifid with 

 slender spreading lobes; ovary glabrous, depressed. 



V^ar. a typica H. J. Lam, nov. var. — folioram basis 

 truncata vel subcordata ; calycis labium superius subintegrum. 



Var. /3 cordata King and Gamble I.e. ~~ base of leaves 

 more deeply cordate; branches of inflorescences more distant; 

 upper lip of calyx 2-lobed. 



Distribution of the species: Perak (Malay Peninsula). 



6. P. Ruttenii H. J. Lam, nov. spec. — Arbor parva ; 

 ramuli, corymbi, petioli minutissime, sparse pubescentes; 

 ramuli cylindrici cortice griseo; folia opposita, membranacea, 

 integra, late ovata, basi leviter cordata vel truncata, apice 

 subabrupte breviterque acute acuminata, adulta supra sparse 

 pilis simplicibus vestita, eglandulosa, nervis subglabratis, 

 haud prominentibus, utrinque 5; subtus glabra, glanduloso- 

 punctata, nervis minute puberulis; 10^1272 cM. longo, 

 7—9.3 cM. lata, petiolo 4^/2— '6 cM. longo; corymbi multi- 

 flori, 11 cM. • longi, 13 cM. diametro; pedunculo 6 cM. 

 longo; bracteis minutis; calyx bilabiatus, 0.3 cM. longus, 

 labio utroque breviter acuteque bidentato; minute pubescens; 

 margine ciliatus; corolla viridi-alba, novella extiis tubo 

 lobisque minute puberula, adulta tubo glabro, lobis pube- 

 rulis; tubo intus parte superiore densissime profundeque 

 villoso, 0.45 cM. longo; lobis 4, subaequalibus, 0.15 cM. 

 longis, 0.1 cM. latis, oblongo-rotundis; stamina longe 

 exserta, 0.45 cM. longo; stylus 0.9 cM. longus, stigmata 

 brevissime bifldo ; ovarium glabrum. 



Borneo: Rutten no. 621, E.-Borneo, Bulongan, near 

 Sadjan-river, 10 M. in alt., flow, on 25-X-1912. 



This species shows a close relation to P. parasitica, but 

 differs from it by its membranous leaves, which are puberulous 

 above, its slender nerves, its smaller corymbs and larger flowers 

 and its very shortly bifid stigma. Its affinity is also with P. 

 stercalifolia and P. cordi folia. 



