ORCHIDACEJE 



181 



reflexo, acuta, ab apice sepali usque ad basim columnae pedis circa 

 2 cm. longa. Sepalum dorsale lateralibus multo minus, circa 

 12 mm. longum, 5 mm. latum, oblongum, acutum. Petala spathu- 

 lata, circa 1 cm. longa, 3-3.5 mm. lata supra medium. Labelhim 

 circa 2 cm. longum, oblongi-cuneatum, dilatatum, sub-rhombicum, 

 12 mm. latum supra medium, a fronte profunde emarginatum ; 

 margo nonnihil plicatus; discus carina lata, incrassata, plana para- 

 tus. Mentum 1.5 cm. longum, obtusum. Columna alba, margini- 

 bus pallide sanguineis, alis obtusis. 



This very beautiful Dendrobium has foliage similar to that of 

 some species of Sedum. The terete leaves are very faintly, if at 

 all, grooved above. The flowers appear both on the old and on 

 the young stems, near the summit. My description is taken from 

 a living specimen collected on Mt. Mariveles by E. D. Merrill, 

 which flowered in my greenhouses during March, 1907 (hb. Ames 

 no. 10419). There is also a specimen in the herbarium of the 

 Bureau of Science, from Mt. Mariveles, Province of Bataan, Luzon, 

 coUected March, 1905, by H. N. Whitford (no. 1127). 



D. (§ Aporum) MERRILLII sp. nov. Herba 11-18 cm. alta. 

 Caidis compressus, anceps. Folia 10-18, ± 2 cm. longa, condu- 

 plicata, explanata 14 mm. lata, disticha, 

 longiora prope medium caulem . Flores 

 albi, terminales, circa 4 mm. longi 

 ab apicibus sepalorum lateralium ad 

 apicem menti obtusi. Ovarium cum 

 pedicello 5-6 mm. longum. Sepala 

 later alia triangulari-oblonga, acuta, 

 1.5 mm. lata. Sepalum dorsale oblon- 

 gum, lateralibus angustius, obtusum. 

 Petala oblonga, obtusa. Labellum 

 late oblongum, circa 4 mm. longum, 1.5 

 mm. latum, ad apicem trilobatum ; lobi 

 rotundati, obtusi, laterales obscuri, medius 0.5-1 mm. longus, 

 circa 1 mm. latus, papillosus. 



Dendrobium Merrillii 



