ORCHIDACEiE 



4.2 cm. long, 8 mm. wide, oblong, rounded at the obscurely bi- 

 lobed apex, shortly narrowed to a complicate subsessile base, rigid, 

 suberect, coriaceous, the mid-nerve prominently sulcate above 

 and carinate beneath, the margins somewhat revolute. Flowers 

 solitary, rising from the summit of the pseudobulbs. Pedicellate 

 ovary nearly 2 cm. long, slender, conspicuously exserted from the 

 sheath. Lateral sepals about 10.5 mm. long, 4 mm. wide, ovate- 

 oblong, acute, with a dorsal mucro, five-nerved, forming a 

 slightly and inconspicuously saccate mentum. Dorsal sepal about 

 9.5 mm. long, 4.5 mm. broad across the middle, similar, broadly 

 rounded and more or less mucronate at the apex. Petals about 

 1 cm. long, 4 mm. wide above, oblanceolate-oblong, broadly 

 rounded at the apex, indistinctly mucronate, five-nerved, the 

 upper margins very slightly erose. Lip 8 mm. long, 7.5 mm. 

 broad across the middle, in outline suborbicular, deeply three- 

 lobed ; lateral lobes erect, broadly rounded with free part semi- 

 orbicular ; middle lobe larger, suborbicular, shallowly subretuse, 

 minutely erose, very papillose except in the center at the base; 

 a little below the center of the lip there is a V-shaped or shal- 

 lowly triangular callus with one or two irregular longitudinal 

 ridges running toward the base. Column short, stout, about 4mm. 

 long, broadly winged ; wing narrowed from the base upward ter- 

 minating in a cucullate blunt point; foot broad, saccate, wing- 

 margined. 



Clemens 372 shows somewhat smaller foliage and less distant 

 pseudobulbs than the type. These differences are further accent- 

 uated in flowerless, apparently immature specimens, found at 

 Kiau and Lobong. 



In habit Dendrobium longirepens resembles JD. Fargesii 

 Finet. 



Marei Parei Sfur, Clemens 24S (Type), November 1915. Flower pui-ple; 



[ 106] 



