ORCHIDACE^ 



BULBOPHYLLUM Thou. 



Bulbophyllum (§ Monanthaparva) alboroseum Ames sp. 

 nov. Rhizoma repens. Radices fibratae, albidae, glabrae. Pseudo- 

 bulbi 5 mm. longi, decumbentes, in sicco valde pluriarticulati, 

 rugosi, nitidi, monophylli. Folia usque ad 7 mm. longa, 3-4 mm. 

 lata, coriacea, oblongo-elliptica, nervo medio in mucronem ex- 

 tenso, in sicco super pustulosa. Scapus usque ad 2 cm. longus, 

 pergracilis, erectus, minute scabridiusculus, usque ad basim pedi- 

 celli nudus. Bractea pedicellum subtendens infundibuliformis, 

 oblique truncata, acuminata, apice aristata, circa 2 mm. longa. 

 Pedicellus cum ovario 5-7 mm. longus, scabridiusculus. Flos 

 singulus, usque ad 8 mm. longus, sepalis petalisque conniventi- 

 bus. Sepala lateralia usque ad 9 mm. longa, 2.5-3 mm. lata, ligu- 

 lata, apice triangulari-angustata, acuta, quinquenervia, pellucida, 

 membranacea, mentum obtusum 1.75 mm. longum formantia. 

 Sepalum dorsale 7.5-9.5 mm. longum, circa 2 mm. latum, ligu- 

 latum, utrinque leviter angustatum, apice acutum, quinquener- 

 vium. Petala usque ad 3 mm. longa, supra medium circa 1 mm. 

 lata, bene spathulata, apice rotundata, uninervia. Labellum cum 

 ungue 3 mm. longum, plus minusve 1 mm. latum prope medium, 

 linguiforme, margine partis apicalis valde revoluta vel deflexa, 

 apice rotundatum, basi cuneatum ; unguis brevis, trinervius. Co- 

 lumna 1 mm. longa in pedem longum producta, utrinque apice 

 triangulari-cuspidata. Ovarium dense muricatum. 



Vegetatively this species resembles B. mindorense Ames and 



B. McGi^egorii Ames. From B. mindorense it differs in having 



larger flowers. From B. McGregorii it is separable by the larger 



sepals which are five-nerved. 



Benguet Subprovince, Mount Luson, M. Ramos ^ G. Edano 105, Octo- 

 ber 7, 1921. On dead branches of trees. Flowers pink and white. 6000 feet 

 altitude. 



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