ORCHIDACEJE 



117 



integrae assistentem, cujus ilia pars fieri videtur. Fructus capsula 

 ellipsoidalis, glabra, 1 cm. longa. 



9200 ft., Mt. Malindang, Prov. Misamis, Mindanao, May, 1906, 

 Maj. E. A. Mearns and W. J. Hutchinson (no. 4605) in part. 



This number proved to be a mixture, several specimens of D. 

 tenue Ames having been mingled with the present species. Ac- 

 cording to field notes the flowers were purplish red. D. Mearnsii 

 is closely allied to D. Copelandii Ames, from which species it is 

 distinguishable by the callus on the lip, the reduced lateral arms 

 of the column, the one-nerved sepals, and its smaller proportions. 



39. D. BICALLOSUM sp. nov. 

 Radices longse, ramosse. Pseudobulbi 

 semifusiformes, 3-3.5 cm. longi. Fo- 

 lium lanceolatum vel elliptico-lanceola- 

 tum, acutum, 7.5-10 cm. longum, 

 1.5-3 cm. latum (folio Convallarice 

 mqjalis simile). Petiolus 3-3.5 cm. 

 longus, cum nervo prominente folii 

 continuus, in juvente bracteis tubula- 

 ribus vaginantibus obtectus. Pedun- 

 cidus multo folium excedens, gracilis, 

 ad 2 dm. lonsnis. Racemus 6.5-20 

 cm. longus. Bracteoe oblongse, acutae, 

 4 mm. longae. Sepala later alia 3- 

 nervia, oblonga, acuta, ± 5 mm. longa, 

 2 mm. lata. Sej)alum superius latera- 

 libus simile, oblongi-lanceolatum. Pe- 

 tala 3-nervia, elliptico-oblonga, ± 4 

 mm. longa. Labellum 3-nervium, ob- 

 lanceolatum vel spathulatum, acumi- 

 natum, peracutum, 4 mm. longum, 2 

 mm. latum super medium, callo parvo in 

 nervo utroque laterali paulo infra medium 



DENDROCHILUM BICALLOSUM 



1, lip of the species ; 2, column ; 3, lip of 

 the variety. 



Columna 2 mm. longa, 



