December 12, 1912] Orchid. Novae et Criticae Ins. Philippinarum 1587 



is very similar to that of the present species. 



Island of Negros: Province of Negros Oriental, Dumagucte 

 (Cuernos Mts.), April, 1908, A. D. E. Elmer, 9821. 



On reclining tree trunks of moss}'^ woods at 4250 feet above 

 sea level, forming rather loose but dense tufts. Pseudobulbs green 

 and not rigid; leathery dark green foliage descending, fiat, canic- 

 ulate on the upper side toward the base. 



Bulbophyllum sibuyanense sp. no v. 



Rhizoma repens, gracilis. Pseudobulbi remoti, tetragoni. 

 15 — 18 mm. longi, rugosi, monophylli. Folium ligulatum, oblon- 

 gum, obtusum, coriaceum, petiolatum, 8 — 10.2 cm. longum, 

 1.3 — 1.4 mm. latum. Petiolus circiter 1 cm. longus, sulcatus, 

 rigidus. Scapus erectus, gracilis. Flores purpurei, racemo in 

 umbellam contracto. Pedicelli 5 mm. longi, graciles. Sepala 

 lateralia 1.8 — 2 cm. longa, supra basim fere ad apicem connata, 

 in laminam cohaerentia. Lamina circiter 4 mm. lata, anguste 

 lanceolata. Sepalum superius ovato-lanceolatum, acuminatum, 

 circiter 5 mm. longum, fimbriatum, in caudam filiformem con- 

 strictum. Petala lanceolata. acuminata, circiter 4 mm. longa, 

 fimbriata, in caudam filiformem constricta. Labellum lingulatum, 

 valde arcuatum, obtusum, 2 mm. longum. Columna minuta, 

 superne 2-alata, alis in brachium truncatum erectum producta. 



The pseudobulbs in this species are on the average 3 cm. apart. 

 The flowers are whitish and purplish with the labellum shiny 

 yellow, according to notes made by Mr. Elmer. B. Cumingii 

 Reichh. f. is a closely allied species from which B. sibuyanense 

 is to be distinguished by its smaller flowers and narrow leaves. 



Island of Sibuyan: Province of Capiz, Magallanes (Mt.. 

 Giting-giting) , April^ 1910, A. D. E. Elmer, 12140. 



On trunk of a small tree in humid woods on the gravelly 

 stream bank of the Pauala river at 1250 feet above sea level. 

 Rootstocks drj' and pliable; pseudobulbs yellowish green, 

 scattered along the rhizome, terminated by a thickly coriaceous 

 ascending leaf blade which is somewhat paler beneath than 

 above; scape arising from the base of the pseudobulb, slender, 

 brownish; inflorescence a half horizontal umbel; flowers delicate. 



