ORCHIDACEiE 



or with very pale purple tinge. Labellum with purple lines inside. 

 Negros, Canlaon Volcano, E. D. Merrill 7012, April, 1910. Epiphyte. 

 Altitude 5000 feet. Camiguin de Mindanao, M. Ramos Bur. Sci. 14417, 

 April 20, 1912. Flower violet pink. Leyte. 



9. Thrixspermum (§ Orsidice) rostratum sp. nov. Herba epi- 

 phytica, scandens. Folia valde ligulata, coriacea, ±2.7 dm. longa, 

 ±2.5 cm. lata, subacuta. Pedunculi cum racemo foliis longior. 

 Racemus usque ad 3.5 dm. longus. Bracteaa oblique ascendentes, 

 breviter falcatse, subacutae, rigidas, persistentes, distichag, com- 

 planataa. Sepala petalaque flavida; labellum cinnabarinum. Sepala 

 lateralia linearia, ad apicem incrassata, ±3.5 cm. longa, prope 

 basim circiter 4 mm. lata, septemnervia. Sepalum dorsale simile. 

 Petala linearia, circiter 3.5 cm. longa, prope basim circiter 3 mm. 

 lata. Labellum 1.5 cm. longum, ad basim profunde saccatum; 

 saccus obtusus. Lobi laterales semi-ovati, curvati, obtusi, circiter 

 1.5 mm. longi. Lobus medius 9 mm. longus, rostratus, glabrus, 

 incrassatus, acutus, superne sulcatus, ad basim, ad faucem sacci, 

 callo sulcato. Gynostemium brevissimum. 



The material from which the description was prepared consists 

 of several inflorescences, two leaves, and four flowers. 



From Thrixspermum elongatum Ames, to which T. rostratum 

 is closely allied, it isreadily distinguished by the long, strap-shaped 

 leaves, and by the elongated beak-like middle lobe of the cinna- 

 bar red labellum. As in the other species of this section of Thrix- 

 spermum, the rhachis of the inflorescence elongates during an- 

 thesis, producing short-lived flowers, for the most part one at a 

 time, throughout several weeks. The shortest rhachis in the type 

 specimen bears about eighteen floral bracts and is hardly 9 cm. 

 long. The longest rhachis bears about eighty floral bracts and is 

 36.5 cm. long. 



[ 208 ] 



