ORCHIDACE^ 



ovata, acuta. Sepalum dorsale simile. Petala oblonga vel sub- 

 spathulata, 1 mm. longa, valde obtusa. Labellum circa 1 mm. 

 longum, ad basim am'iculato-cordatum, ad apicem rotundatum 

 bilobatum, prope medium leviter constrictum vel angustatum. 

 Columna simplex. 



In habit Oberonia leytensis suggests O. brevifolia Lindl. The 

 sinus formed by the lobes of the lip is distinctly triangular. Five 

 or more flowers make up the whorls of the arching or droop- 

 ing raceme. O. mindorenm Ames has a very similar lip, but the 

 habit of the plant is much more robust and the petals are linear. 

 (Plate 98.) 



Leite, C. a. Wenzel OdJfB^ June 4, 1915. Epiphyte at sea level. 



Oberonia surigaensis ^7«f5 sp. nov. Planta O. Wenzelio ha- 

 bitu omnino congruens. Radices valde elongatae, fibratae. Caules 

 abbreviati, ±8 mm. longi, complanati. Folia usque ad 1.5 dm. 

 longa, 7-10 mm. lata a latere visa, falcata, prope basim equitan- 

 tia, quam inflorescentia longiora, super medium attenuata. Sea- 

 pus cum racemo circa 1 dm. longus, pergracilis, densiflorus, flori- 

 bus rubris. Racemus 9 cm. longus, 4 mm. in diametro. Flores 

 verticillati, minuti. Rachis costatus, glaber. Bracteae inflores- 

 centiae minutae, paucidenticulatae, triangulares, acutae. Sepala 

 lateralia circa 1 mm. longa, triangulari-ovata, subacuta. Sepalum 

 dorsale simile. Petala anguste oblonga, vix .5 mm. lata, prope 

 apicem leviter dilatata et paucidenticulata. Labellum 1 mm. 

 longum, circa 1 mm. latum prope basim, concavum, profunde 

 retusum, ovatum, margine valde denticulatum, dentibus sim- 

 plicibus vel bifurcatis. Columna generis. 



Oberonia surigaends is closely related to O. IVenzelii Ames, 

 from which species it differs in part in the denticulation of the 

 labellum. The teeth on the labellum of O. IVenzelii are confined 



to the margin of the basal half and are inconspicuously, if at all, 



[ 292 ] 



