ORCHIDACE.E 



utrinque triangulari-cuspidata. Anthera .75 mm. longa, antice 

 obtusa. 



The habit of B. invisum suggests B, lepantense Ames, but the 

 leaves are larger and the flowers twice larger than in that spe- 

 cies. In the structure of the flowers the three-nerved petals of 

 B. invisum and the very different labellum are differentiating 

 characters when comparisons with B. lepantense are made. B. 

 Escritorii Ames, which is also a closely related species, is differ- 

 ent in having one-nerved petals and a labellum which is not 

 narrowed at the base. 



Benguet Subprovince, Mount Pulogloco, M. Ramos (§- G. Edano 58^ 

 September 30, 1921. On tree in mossy forest. Flowers white. 6700 feet 

 altitude. 



Bulbophyllum (§ Racemosae)papillipetalum^w^5^j9. nov. 

 Herba epiphytica. Rhizoma longe repens, plus minusve 4 mm. 

 in crassitudine, radiciferum. Radices fibratae, plus minusve 3 

 cm. longae, patentes. Pseudobulbi subnulli, 3 mm. alti, 3 mm. 

 in crassitudine, monophy Hi ; juniores vaginis tubulatis obtecti; 

 vetustiores nudi, defoliati, persistentes. Folia valde coriacea, 

 crassa; juniora circa 4 cm. longa, 1.8 cm. lata, in sicco atroviridia, 

 petiolo abbreviato vaginis tubulatis occulto; vetustiora cum 

 petiolo usque ad 9 cm. longa, 3 cm. lata, petiolo 2-4 cm. longo ; 

 limbi oblongo-elliptici, subacuti, basi rotundati, abrupte in petio- 

 lum contracti, subtus nervulis eminentibus. Pedunculus cum 

 racemo usque ad 17 cm. longus, infra racemum vaginis infundi- 

 buliformibus instructus. Vaginae 1-1.5 cm. longae, in specimini- 

 bus nostris tres. Racemus usque ad 10 cm. longus, plus minusve 

 decemflorus, floribus flavescentibus, plus minusve 5 mm. inter 

 se distantibus. Bracteae inflorescentiae plus minusve 6 mm. 

 longae, ovato-lanceolatae, acuminatae, acutae, ovarium exce- 

 dentes. Sepala lateraUa 9 mm. longa, plus minusve 5 mm. lata 



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