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This is the second species of the genus recorded from Cele- 

 bes. It is readily distinguished from 0. celehica Schltr. by its 

 peculiar leaves curved invvard in an obtuse angle above the mid- 

 dle; the lower part is compressed laterally, the upper one from 

 the back. Moreover the sepals are triangular and the petals oval. 



Description from herbarium. 



Plii'eafia (sect. Bulbophreatia) .«iiia(ljieii«ii<ii J. J. S. n. sp. 



Rhizoma repens, radicans, vaginatum, vaginis tubulosis, 

 SLimma infra pseudobulbos maxima, c. 1.3 cm. longa. P.seudo- 

 bulbi c. 0.6-0.8 cm. distantes, parvi, sicco oblique ovoidei, c. 

 0.2 — 0.3 cm. longi, 1 folii. Folium erectum, sublanceolato lineare, 

 obt'jsum vel subbilobulum, apiculatum, basi sensim longe angus- 

 tatum conduplicatumque, costa média dorso prominente, sicco 

 papyraceum, c. 7.75 — 9 cm. longum, U.5 — 0.6 cm. latum; vagina 

 petioliformis, lateraliter compressa, c. 0.6 — 0.9 cm. longa. Inflore- 

 scentiae ad basin pseudobulborura, densius multitlorae, pedunculo 

 tenui, c. 6.5 cm. longo, vaginulis c. 8 inferne approximatis 

 superne remotis inconspicuis tubulosis acutis c. 0.4 cm. longis 

 donato, rachide sicco angulata, giabra, c. 3 cm. longa. Bracteae 

 lanceolato-triangulae, tenuissime acuminatae, concavae, c. 0.25 

 cm. longae. Flores parvi, c. 0.275 cm. longi. Sepalum dorsale 

 ovatum, obtusum, vix obtuse apiculatum, concavum, Inervium, 

 o. 0.16 cm. longum, bene 0.1 cm. latum. Sepala lateralia cum 

 pede gynosteraii mentum reversum ovario subadpressum antice 

 apertum c. 0.075 cm. longum formantia, divergentia, oblique 

 triangula, obtusa, breviter obtuse apiculata, concava, Inervia, c. 

 0.13 cm. longa, basi obliqua c. 0.15 cm. lata. Petala oblique 

 .subovata, obtusa, concava, Inervia, c. 0.125 cm. longa, 0.07 cm. 

 lata. Labellum adscendens, leviter sigmoideum, unguiculatum, 

 basi cum pede gynostemii excavationem minutam formans, con- 

 cavum, 3nervium. explanatum c. 0.175 cm. longum. ungue 

 quadrangulo, basi utrinque leviter rotundato dilatato, fere 0.08 

 cm. longo, basi c. 0.05 cm., apice 0.03 cm. lato, abrupte in 

 laminam semielliptico reniformem obtusam concavam glabram c. 

 0.08 cm. longam 0.14 cm. latam dilatato, lobis basilaribus laminae 

 obtusis. Gynostemium brève, dorso convexum, apice obtusum, 

 cum anthera c. 0.0s cm. longum, clinandrio profunde excavato. 

 Anthera cucullata, obtusa, basi biloba, c. 0.04 cm. lata. Pollinia 



