lateral lobes slightly oblique, rounded, obtuse, about 2 
mm. long and as broad at the base, with a short erect 
acute callus within; mid-lobe short, very much thickened 
and callus-like; sac or spur narrowed toward the tip. Col- 
umn about 2 mm. long, prolonged into a distinct foot. 
Saccolabtum Quisumbingi is most closely allied to 8. 
Escritoru Ames with which it had been confused. The 
two species may be distinguished as follows: 
Saccolabium Escritorti 
Lip, as seen from the side, ap- 
proximately quadrangular in out- 
line. 
Lateral lobes of the lip lanceo- 
late, acute. 
Leaves apparently not retuse at 
the apex, comparatively small. 
Inflorescence comparatively 
densely flowered. 
Saccolabtum Qutsumbingit 
Lip, as seen from the side, ap- 
proximately triangular in out- 
line. 
Lateral lobes of the lip oblique, 
rounded, obtuse. 
Leaves retuse and oblique at the 
apex, comparatively large. 
Inflorescence comparatively lax- 
ly flowered. 
Luzon: cultivated in the Bureau of Science Orchid House, Man- 
ila, December 24, 1929, Quisumbing 78806 (Tyrer in Philipp. Nat. 
Herb., Manila; fragment and analytical drawings in Herb. Ames 
No. 44200). The original living specimen is said to have been col- 
lected by McGregor at Majayjay, Province of Laguna, at 300 meters 
altitude. The flowers are noted by Quisumbing as white with the 
lobes of the lip purple-violet. 
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