0RCH1DACEM 



107 



elongated, slender petiole ± 2 dm. 

 long. Peduncle slender, ± 3 dm. 

 long. Bracts round-ovate, acute, 

 7 mm. long. Flowers large," pale 

 brownish," with, faint odor. Lat- 

 eral sepals oblong-lanceolate, 9 

 mm. long. Upper sepal similar to 

 the laterals. Petals 7.5 mm. 

 long, ovate-lanceolate, margin ir- 

 regularly toothed. Labellum 5 

 mm. long, 3-lobed, strongly con- 

 cave ; middle lobe rotund, apic- 

 ulate, 4 mm. long, margin denticu- 

 late, sulcate, the margin of the 

 groove thickened ; lateral lobes 

 triangular-lanceolate, denticulate 

 on the outer margin, about 2 mm. 

 long, acute. Column 3.5 mm. long, produced into a foot ; lateral 

 arms linear, arising from about the middle of the column, 2 mm. 

 long, terminal wing irregularly dentate. 



Dendrochilum magnum 



To this species I refer two series of specimens collected by 

 E. D. Merrill on Mt. Halcon, in the island of Mindoro. The label- 

 lum is in no sense 3-lobed at the apex, but except for this is in 

 conformation very much like a drawing in Lindley's herbarium at 

 Kew, labelled D. magnum. If I were positive that the 3-lobed 

 apex was the result of anomalous development or injury, I would 

 have no feeling of hesitation regarding my determination. The 

 sulcate disc, the prominent rib that gives the labellum a carinate 

 aspect when viewed from beneath, and the very large flowers are 

 all much like the figure in Lindley's herbarium. Furthermore, 

 the 3-lobed apex is not at all characteristic of the section Platy- 

 clinis, to which D. magnum belongs. Although my conclusions 

 are purely conjectural, I cannot convince myself that it would be 

 wise to refer my specimens to any other species beside D. magnum, 

 or to describe them as a new species at this time. 



