- 27 - 



According to Schlechter's description it differs from O. 

 celeblca (Schltr.) J.J.S., as yet the only known species from Celebes, 

 in the broader not linear leaves obtusely and unequally bilobed 

 at the apex, long and densely ciliate sheaths, linear petals slightly 

 narrowed toward the apex, the very broad rhomboidal lip. 



Although the species belongs to the section OiuUanettia, the 

 lip is rather abruptly thickened at the base. 



Description from a dried spécimen. 



Aurro§IO]>!i.vllum (sect. Euagrostophyllum) ^'aiiliul- 



§(ijiiii J. J. S. n. sp. 



Gaules approximati, elongati, valde compressi, sectione trans- 

 versa anguste eiliptici, foliati, nitidi, pallide viiides, ad c. 43.5 

 cm. longi, internodiis ad c. 3.5 cm. longis, inferioribus et supremis 

 brevioribus c. 1 cm. longis, apice ad c. 1 cm. latis, basi plerumque 

 paulo angustioribus. Folia erecto-patentia, basi leviter torta, recta, 

 loriformia, apice breviter vix inaequaliter obtuse bilobula cum 

 mucrone interposito, basi paulo angustata conduplicataque, costa 

 média supra sulcata subtus tenuiter carinata, tenuiter coriacea, 

 nitide viridia, c. 14 — 19.5 cm. longa, 2 cm. lata, inferiora sensim 

 decrescentia, supremum etiam minus; vaginae inteinodia supe- 

 rantes, tubulosae, antice rumpentes et anguste nigro marginatae, 

 arcte conduplicatae, apice utrinque dente instructae, dilute virides. 

 Inflorescentia terminalis, capitellata, nutans, dense multiflora, c. 

 2 cm. diam. Inflorescentiae paitiales c. 5tlorae, pedunculo non- 

 nulis vaginulis adpressis sese ampilectentibus mox exarescentibus 

 ad c. 0.65 cm. longis tecto. Bracteae vaginulis similes, plerumque 

 fissae, ad c. 0.7 cm. longae. Flores parvi, pallide ochrascentes, 

 c. 0.57 cm. diam. Sepalum dorsale ovatum, dorso ad apicem 

 minute reverse conico-apic'ulatum, convexum, c. 0.35 cm. longum, 

 0.18 cm. latum. Sepala lateralia oblique ovata, apiculata, intus 

 utroque latei'e convexa, basi concava basin labelli amplectentia, 

 dorso- carinata, c. 0.37 cm., tota 0.425 cm. longa, 0.225 cm. 

 lata. Petala divergentia, oblique oblongo ovata, 1/3 superiore 

 contracta, obtusa, convexa, c. 0.3 cm. longa, 0.12 cm. lata. 

 Labellum basi concavo subsacculatum, onervium, subtus longitu- 

 dinaliter sulcatum, c. 0.30 cm. longum, hypochylio tlavescenti ; 

 lobi latérales erecti, basi gynostemii adpressi, oblique quadranguli, 

 obtusi, apice purpureo-marginati, gynostemio multo breviores, 



