Smith : Orchidaceae novae Malayenses X. 87 



Dcndrobium (sect. Pedilonum) quadrialatum J.J.S. n. sp. 



Cailles elongati, crassi, sicco leviter serpentiiii, parte adest ad c. 18 cm. 

 loiiga, iiiteiiiodiis ad c. 2 cm. louais. Folia patentia, laiiceolata, obtiisa, 

 paiilo iiiaeqiialiter rotiiiidato-biloba, basi semiamplexicaiilia, coiiaeea, c. 8 cm. 

 loiiga, 2 cm. lata, superiora ininora; vagiiiae tubulosae, iiiternodium superaiites. 

 Iiifloresceiitiae e iiodis caulium defoliatorum, iiumetosae, erecto-patentes, 

 ses^iles, brèves, dense pluriflorae, rachide c. 1.8 cm. longa. Bracteae con- 

 spicuae, obloiigae ad ovatae, acuminatae, acutae, coiicavae, ad c. 1.75 cm. 

 longae. Flores c. 9, médiocres, macerati c. 2.5 cm. loiigi. Sepalum dorsale 

 obloiigum, SLiperne aiigustatum, acutum, triquetro-apiciilatum, praesertim 

 iiiferne valde convexum, 5iiervium, bene 1.5 cm. loiigum, 0.62 cm. iatum. 

 Sepala lateralia lacinia oblique oblonga basiii versus angustata curvata ad 

 pedem gynostemii decurrentia, mentum reversum apice excepto ovario 

 adpressum iiicurvulum oblongo-conicum apice aiigustatum obtusum dorso 

 convexum c. 0.95 cm. longum formantia, marginibus anticis lougitudine 

 c. 0.2 cm. coniiata, parte aiitica oblique ovato-oblonga, apice conduplicato- 

 subobtusa, dorso praesertim apicem versus carinata, carina ultra apicem 

 producta, ônervia, bene 1.5 cm., in totum 2.4 cm. longa, 0.74 cm. lata. 

 Petala oblique oblongo-subobovata, apice subrectangule acuta subcondu- 

 plicata et dorso carinata, inferne cuneato-angustata, 3nervia, bene 1.3 cm. 

 longa, 0.5 cm. lata Labellum pedi gynostemii et gynostemio parallelum, 

 pedi gynostemii longitudine c, 0.5 cm. adnatum, concavum, angustum, 

 medio constrictum, gynostemium superans, appendice hippocrepidiformi 

 postice rotundata margine elevata recurvataque in -/j partibus supra basin, 

 Snervium, nervis exterioribus basi furcatis, omnibus in parte contracta 

 prominulis, c. 1.6 cm., explanatum 1.8 cm. longum, ungue oblongo, concavo, 

 c. 0.7 cm. longo, 0.33 cm. lato, lamina oblonga, breviter acute acuminata, 

 concava, c. 1.1 cm. longa, 0.375 cm., basi contracta 0.18 cm. lata. Gynoste- 

 mium recurvulum, a dorso compressum, absque anthera c. 0.36 cm. longum, 

 clinandrio transverso, excavato, filamento subulato, auriculas apice obtusan- 

 gulas superante. Stigma quandragulum. Pes gynostemii apice excepto 

 ovario adpressus, incurvus, valde concavus, c. 1 cm. longus. Ovarium 

 quadrialatum, facie inferiore exalatum, c 7 cm. longum, cum pedicello 

 tenuiore aequilongo leviter signoideum. 



Ternate: Toramadiahi, 550 m., epiphytical in forest, (V. M. A. BEGUIN 

 n. 1187, November 1920). 



This seems to be nearest to D. bracteosiim RCHB. F. from New-Guinea, 

 wliich lias also rather large bracts, but the stems are much thicker, the 

 leaves larger, the flowers broader with a narrower lip provided with a 

 rounded appendix. 



„Flowers violet, lip red. Stems 35 cm. long". (BEGUIN). 



Description from herbarium, which consists in a few upper portions 

 of the stems. 



