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clausum c. 2.1 cm. longum formantia, paite libéra oblique subovata. obtusa, 

 Tnervia, c. 1.2 cm., tota 3 cm. loiiga, 0.Ô5 cm. lata, basi 2.1 cm. metien- 

 tia. Petala oblique obovata, obtusissima, Vs partibus superioribus eroso- 

 dentata, basi 3nervia, nervis exterioribus supra basin furcatis, c. 1.3 cm. 

 ionga, 0.73 cm. lata. Labellum spathulatum, 31obum, incrassatione trans- 

 versa semilunata postice excavata antice triangulo - decrescente acute 

 rnarginata iiiter lobos latérales, explanatum totum c. 3.6 cm. longum, ad 

 lobos latérales 0.8 cm. latum, ungue liiieari, canaliculato, 3nervio, c. 1.9 cm. 

 longe, longitudine c. 1.25 cm. pedi gyiiostemii adnato, lamina c. 1.7 cm. 

 ionga, lobis lateralibus parvis, triangulis, obtusis, lobo intermedio 

 magiio, ambitu cuneato-subsexangulato, apice late rotundato-bilobo, 

 basi angustata integerrimo, parte dilatata laciniis numerosis anguste lineari- 

 bus inaequalibus fimbriato, c 1.2 cm. longo, basi 0.53 cm., medio 1.4 

 cm. lato. Gynostemium cum ovario angulum obtusum faciens, brève, 

 crassum, marginibus in utraque stigmatis parte rotundato-dilataium, 

 absque anthera c. 0.27 cm. longum, apice semiorbiculari, vix retiiso, 

 gibboso-porrecto, cum auriculis angulos acutos faciente, filamento subtus 

 ad basin gibbi orto, triangulo. subulato, auriculis loiigioribus, conspicuis, 

 parallelis, oblique quadrangulis, obtusis, inaequaliter 2dentatis. Anthera 

 cucuUata, a dorso compressa, antice plana et ambitu quinquangularis. apice 

 late truncata, margine angustissimo incurva, dorso rotundata et obtuse 

 gibbosa, c. 0.25 cm. lata. Pollinia 4, brevia, lateraliter compressa, una 

 corpusculum transverse ovale formantia, a latere visa oblique rotundato- 

 triangula, c. 0.13 cm. Ionga. Stigma alte excavatum, quadrangulum. Pes 

 gynostemii cum ovario angulum acutum faciens, subrectus, canaliculatus, 2/5 

 partibus superioribus altius.- conduplicato-canaliculatus, obtusus, c.2.1 cm. 

 longus. Ovarium elongato-obconicum, ôsulcatum, c.0.35 cm. longum; pedi- 

 cellus c. 0.6 cm. longus. 



Sumatra: Natal, Air Tagelang. (A. V. Theunissen, cuit, in Hort. E. 

 Jacobson sub n. 1507). 



A very distinct species allied to D. virescens Ridl., but with the lea- 

 ves not acuminate, few flowered racemes (always?), larger flowers, longer 

 and blunt sepals, a compressed mentum, obovate erose petals, a threelobed 

 lip, with a fimbriate bilobed midlobe, the filament not unusually long. 



The curions attachment of the anther seems to be the same in both species. 



Description from materials preserved in alcohol. 



„01d stems violet redbrown. Leaves dark green. Peduncle dark purpjish 

 brown. Bracts liglit brownish purple. Pedicel and ovary dark olive green, 

 minutely dotted with brownish purple. Sepals und petals transparent, shin- 

 ing, light yellowish green, inside with indistinct longitudinal rows of small 

 brownish purple dots, the sepals outside very minutely dotted with brown- 

 ish purple, the streaks on the petals a little more distinct. Lip transpa- 

 rently light yellowish green, basai half shilling. Column yellowish wliite; 

 anther very light yellow." (E. Jacobson). 



