96 Bulletin Jard . Bo t. Bui tenzorg, Série 111, Vol. V. Livr. i. 



dorso compressum, ovali-oblongum, dorso convexum, apice oblique trunca- 

 tum, c. 0.35 cm. iongum, clinandrio traiisverse ovali, concavo cum costula 

 iongitudinali, margine postico (apice) late rotundato retuso, Anthera cucullata, 

 transverse aequilateraliter siibtrapeziformis, apice lato breviter bidentata ero- 

 sulaque, teiiuis, c. 0.2 cm. lata. Pollinia 4, paulo inaequimagna, a dorso 

 compressa, subovata, basi truncata, 2 postica quam antica paulo angustiora, 

 c. 0.08 cm. longa, stipite lato, cuneato, antice convexo, parte superiore di- 

 latato rotundato leviter concavo, cum glandula majuscula triangula apice 

 lato recurva c. 0.13 cm. longo, Rostellum bidentatum, dentibus remotis. 

 Stigma magnum, alte excavatum, ovato-orbiculare, basi apiceque truncatum. 

 Pes gynostemii cum ovario angulum acutum faciens, vix incurvulus, 

 oblongus, apicem versus leviter angustatus, truncatus, c. 0,25 cm. longus 

 Ovarium pedicellatum ôsulcatum, c. 0.5 cm. Iongum. 



Sumatra: Benkoelen, Lebong, Rimbo Pengadang. (L. C. Westenenk, 

 Juiie 1Q16, Ajoeb n. 223). Oostkust, Besitan-river, Boekit Koeboe. (C. R. 

 W. K. VAN Alderwerelt van Rosenburgh, from a sketch). 



Only one species of this new genus is hitherto known to science, but 

 it is possible that another one grows in Bornéo, where it was collected 

 by Dr. R. SCHLECHTER. Unfortunately, as Dr. Schlechter wrote me, his 

 material has been lost. 



The native collector AjOEB describes the flowers as red with a yellow 

 lip. On the sketch in watercolours by Mr. VAN Alderwerlt VAN ROSEN- 

 BURGH the sepals and petals are chestnut brown with a yellow midline, 

 the sepals bordered with the same colour and the lip yellow with brown dots. 



Description from a single spécimen preserved in alcohol. 



Thrixspcrmum (sect. Dendrocolla) longipilosum J.J.S. n. sp. 



Caulis elongatus, sectione transversa ovalis, c. 20 cm. longus, 0.275 cm. 

 latus, internodiis c. 0.85—0.95 cm. longis, radicibus singulis elongatis vaginam 

 supra inflorescentiam perforantibus. Folia patentia, recurvula, ligulata, apice 

 inaequaliter obtuse biloba et manifeste erosa, basi. paulum angustata, concava, 

 dorso convexa, costa média supra sulcata subtus ad apicem carinata, 

 carnosula, c. 5 — 5.5 cm. longa, 1.2 — 1.5 cm. lata; vagina tubulosa, longi- 

 tudinaliter prominenter nervosa, bene 0.4 cm. lata, Inflorescentiae vaginam 

 dorso ad basin perforantes, adscendentes, folia multo superantes, apice 

 dense multiflorae, pedunculo satis valido, rigido, tereti, apice obconico- 

 incrassato, c, 17 — 21 cm. longo, 0,15 cm, diam., vaginulis c, 3 in parte 

 inferiore, rachide crassa, c. 1.5 cm. longa, 0.4 cm., cum bracteis 1.1 cm. 

 diam. Bracteae quaquaversae, subpatentissimae, e basi lata rachidem semiam- 

 plectente crassiuscule triangulo-subulatae, acutae, concavae, dorso angulatae, 

 c. 0,5 cm, longae. Flores intervallis expansi, médiocres, c. 2,1 cm, lati, 

 sepalis petalisque patentissimis. Sepalum dorsale e basi unguiculato-contracta 

 subabrupte in laminam oblongo-ellii^ticam brevissime apiculatam dilatatum. 



