ORCHIDACEiE 



triangulus, puberulus, ad apicem complanatus, circiter 5 mm. 

 longus. Discus puberulus prope medium ad basim lobi medii 

 callus bilobus vel sulcatus, incrassatus, puberulus, stat. 



Apparently a near relative of Thrixspermum Raciborskii J. J. 

 Smith, and of T. longicauda Ridl. which has smaller flowers and 

 a labellum without a median fleshy callus. The flowers usually 

 open singly throughout a long period of anthesis, the rhachis elon- 

 gating until the last flower appears. Each flower lasts only a day 

 or two. In several specimens examined three flowers were open 

 at one time on the odd bracteate rhachis, which in T. elonga- 

 tum resembles in outline a slender plant of Oberonia anceps. The 

 stems appear to be scandent, and even near the tips stout whitish 

 roots burst through the leaf sheaths. 



There are several species of §Orsidice which are very near this 

 one, but from the material I have studied differences exist which 

 to my mind indicate specific dissimilarity. The ephemeral nature 

 of the flowers of all these species is accountable for the fact that 

 in herbaria one rarely finds complete specimens. 



To Thrixspermum elongatum specimens collected by C. A. 

 Wenzel in Leyte may be referred. Under the field number 095 

 Wenzel assembled many fragments of several plants. The leaves 

 of some of these fragments exceed 1.5 dm. in length, and the in- 

 florescence bears flowers that are about 5 cm. long. The conclu- 

 sion to be drawn from this material is, it seems to me, that 

 T. elongatum is a variable species. 



In Petiver's Gazophylacium, plate 103, fig. 8, this species is 



probably represented and was prepared from one of Camelli's 



specimens referred to in Ray's Historia Plantarum. 



Luzon, Laguna Province, Native Collector s. n. February, 1913. Leyte, 

 Dagami, C.A. Wenzel 095, February 18, 1913. On trees at medium height, 

 60 meters above sea level. Height of plant, 50 cm. Flower purple and 



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