104 ORCHIDACEM 



Petala 6.5 mm. longa, 3 mm. lata, 3-nervia, elliptico-oblonga, acuta. 

 Labelliim 5.5 mm. longum, 3-lobatum; lobus medius lateralibus 

 major, oblongus, breve acuminatus; lobi laterales auriculares, inter 

 eos in disco labelli calli 2 magni. Columna 2 mm. longa ; ala ter- 

 minalis semirotundata, margine minute denticulato ; alae laterales 

 in dentes perbreves triangulares reductae, quorum duo utroque ad 

 basim columnae stant. 



D. palawanense is most closely allied to D. rufum (Rolfe) J. J. 

 Smith and D. Kingii (Hook, f .) J. J. Smith, and with these species 

 forms a small group with tooth-like rather than wing-like lateral 

 arms to the column. In D. Kingii the column teeth are not basal 

 as in D. rufum and D. palawanense. D. palawanense has larger 

 flowers than D. rufum, and from dried specimens they appear to 

 have been cream-colored. The auricular basal lobes of the labellum 

 in D. palaioanense form a distinguishing character. In habit the 

 plants resemble D. uncatum Reichb. f. and D. cobolbine Reichb. f. 



In mossy scrub, alt. 1250 m., Mt. Pulgar, Island of Palawan, 

 March 2, 1906, F. W. Foxworthy (nos. 553 (type) and 557). 



27. D. LATIFOLIUM Lindley Bot. Reg. 1843, Misc. p. 56 ; 

 J. J. Smith Rec. Trav. Bot. Neerl. l: 71 (1904). — Flatyclinis 

 latifolia Hemsley Gard. Chron. n. s. 16: 656 (1881); Rendle 

 Journ.Bot.34: 355 (1896) ; Ames Orchidace^e fasc. 1, 74 (1905). 

 — Acoridium latifolium Rolfe Orch. Rev. 12: 220 (1904). 



The material on which my determination is based agrees with 

 the specimen in Lindley's herbarium at Kew, and the analysis of 

 the flowers corresponds with the details shown by Lindley's sketch. 

 D. latifolium is readily distinguished from D. glumaceum, to 

 which it bears a striking habital resemblance, by the longer peti- 

 oles, pentangular cuneate acute bracts, erose-margined lateral 

 lobes of the lip, and by the arms of the column, which in D. lati- 

 folium are basilar, while in D. glumaceum they are at or near the 

 summit of the column. 



