ORCHIDACEM 89 



D. heterocarpum, Wallich ex Lindl., Orch. PL 78 (1830) : 

 " D. caulibus teretibus pendulis, foliis oblongis acutis planis, 

 floribus geminatis odoratis racemum spurium formantibus, sepalis 

 lineari-oblongis acutis, petalis ovatis acutis sepalo supremo majori- 

 bus, labello unguiculato, limbo subpanduriformi holosericeo medio 

 elongato acuminato piano." 



Stems attenuate at both ends when divested of leaves, 3-5 dm. 

 high, yellow. Leaves hnear-oblong, acute or obtuse. Basal bracts 

 tubular. Flowers fasciculate, appearing after the leaves have 

 fallen. Pedicels 2.5 cm. long. Ovary about 2 cm. long. Lateral 

 sepals 3.5 cm. long, variable, oblong-lanceolate, acute. Petals 

 ovate-oblong, obtuse. Lip with a broad convolute claw; blade 

 about 2.5 cm. long, deltoid ; disc velvety hairy, copiously so at 

 the middle ; spur funnel-shaped, obtuse. Sepals and petals cream- 

 colored, lip yellow, intensely so near the base. Fruit an ellipsoidal 

 capsule, 3.7 cm. long. — Here belong D. aureum, var. philip- 

 pinense, Rchb., f ., and D. rhomheum, Lindl., the latter character- 

 ized by smaller flowers. D. heterocarpum is a widely distributed 

 polymorphic species ; and while the material on which my deter- 

 mination is based agrees with D. aureum, var. philijyj^inensef 

 Rchb., f., it does not seem advisable to adopt a varietal name for 

 a form which is apparently merely geographical. 



Baguio, Prov. Benguet, Luzon, January 19-February 26, 1903, 

 D. LeRoy Topping (no. 66). — March, 1904, A. D. E. Elmer 

 (no. 5983). 



D. Macrsei, Lindl., Orch. PI. 75 (1830) : " D. caulibus flexuosis 

 moniliformibus pendulis pseudo-bulbos turbinatos monophyllos 

 gerentibus, foliis oblongis obtusis sessilibus, floribus 2-3 axillari- 

 bus fasciculatis subsessilibus, sepalis petalisque subsequalibus ova- 

 tis acutis, labello trilobo : lobo medio crenato plicato marginibus 

 recurvis." 



Stems glossy, 4 mm. thick, rigid, jointed. Secondary stems 

 pseudobulbous, monophyllous, 6-8 cm. long. Leaves 9-12 cm. 



