ORCHIDACE.E 



before the period of an thesis begins. In mature specimens the 



remains of these sheaths may be detected after anthesis. 



Luzon, W. S. Lyon 22, 1907. Flowers clear greenish yellow, fugacious, 

 lasting only one or two days. Mindoro, Bongabong River, M. L. Merritt 

 For. Bur. 3693, March 12, 1906. On tops of trees. 



79. Dendrobiumverruculosum^7#£sinPhil.Joum.Sci.8 :426. 

 Leyte, Luzon? 



80. DendrobiumVictoriEereginEeioAerin Gard. Chron. (1897) 

 81 : 399. See D. cceleste, supra. 



Mindoro, Negros, Luzon, Mindanao. 



81. Dendrobium ventricosum Kranzl. Dendrobiinse 209. D. 

 nycteridoglossa Reichb. f. is said to be closely allied. 



82. Dendrobium Wenzelii sp. nov. Caulis per totam longitudi- 

 nem foliatus,4-10cm. altus. Radices fibratse. Folia a latere visa tri- 

 angula, acuta, supra vix decrescentia, maxima ad 12 mm. longa, 

 5 mm. alta, disticha, ad apicem deflexa, ssepe triangulari-falcata, 

 in sicco nervosa, rigida, coriacea, valde complanata, infra medium 

 caulis folio decrescentia, prope basim caulis vix 3 mm. longa ad 

 apicem caulis folia duo aurantiaca, petaloidea. Flores terminales, 

 nunquam laterales, circiter 8 mm. longi. Sepala lateralia supra 

 triangula, obtusa, leviter falcata, postice in mentum obtusum 

 producta, circiter 4 mm. longa, 3.5 mm. lata, mentum 6-7 mm. 

 longum. Sepalum dorsale oblongi-ellipticum, obtusum, circiter 

 4.5 mm. longum, circiter 2 mm. latum. Labellum simplex, ad api- 

 cem bilobum, a basi cuneato-oblongum, circiter 8 mm. longum, 

 vix 3.5 mm. latum; lobi rotundati, leviter denticulati, papulosi, 

 androclinii margo Levis: filamentum satis longum. 



Among Philippine species of Dendrobium heretofore described 

 Dendrobium Wenzelii is readily distinguishable by means of the 

 terminal pair of orange-colored glossy leaves, between which the 



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