ORCHIDACE^E 



DENDROBIUM ACUMINATUM 



Dendrobium acuminatum Rolfe, OiiOHiDACEiE, fasc. 1, p. 86 

 (1905). 



Affine D. cymbidioidce Lindl. et D. trifloro Lindl., simile D. 

 Treacher iano Reichb. f. forma floris. Rhizoma crassum. Pseu- 

 dobulbi elliptico-oblongi, valde leves et nitentes, 4.5 cm. longi, 

 diphylli, partes inferiores vaginis magnis ovatis striatis vestitae. 

 Folia subsessilia, valde coriacea, elliptico-oblonga, obtusa, circa 

 12 cm. longa et 3.2 cm. lata. Scapus terminalis, 3-5.2 dm. longus, 

 6-17-florus. Flores albi et flavi. Bracteae lineari-oblongae, obtusaB, 

 1.5 cm. longse. Pedicelli 3.2 cm. longi, aliquantum graciles. Sepala 

 petalaque oblongi-linearia, sursum attenuata et ad apicem acumi- 

 nata, subsequalia, circa 3.2 cm. longa ; ad basim sepala 4-5 mm. 

 lata, petala 3-4 mm. lata. Labellum valde 3-lobatum, 1.5-1.7 cm. 

 longum; lobus medius 8-9 mm. latus, ovatus, paulo recurvatus 

 et valde acuminatus ; lobi laterales late triangulo-ovati, subacuti, 

 aurantiaco-flavi et disposite f usco-striati. Mentum obtusum, 7 mm. 

 longum. Columna crassa, 4 mm. longa. 



This species is known only from the vicinity of Mt. Mariveles, 

 Province of Bataan, Luzon, Philippine Islands. 



