32 ORCHIDACEM 



long, microscopically serrate on the anterior margin. Labellum 

 variable, sometimes hastate, sometimes lanceolate, acute, 11-12 

 mm. long. Spur wanting as a rule ; when present it is slender and 

 2 mm. or less long. Wings of the ovary finely serrate or toothed. 

 Of this most interesting species I have numerous examples from 

 Luzon. The lip is extremely variable, sometimes hastately lobed. 

 Hooker in the Flora of British India places H. pelorioides among 

 the imperfectly known species, and describes it as an anomalous 

 plant of which he has seen only one indifferent specimen. The 

 present species is figured in connection with the original descrip- 

 tion by Reichenbach. According to the field notes accompanying 

 a specimen collected by R. Meyer, the tubers are edible. 



Dry thickets in dark loam, alt. 30 m., rather common, Lamao 

 River, Mt. Mariveles, Prov. Bataan, Luzon, November, 1904, T. E. 

 Borden (no. 2104). — November 26, 1904, R. Meyer {no. 2195). 

 — Daklan to Kabayan, on grassy slopes, Prov. Benguet, Luzon, 

 October 27, 1905, E D. Merrill (no. 4410). — In sandy soil of 

 the Lamao River bottom lands, Mt. Mariveles, Prov. Bataan, Luzon, 

 November, 1904, A. D. E. Elmer (no. 6742). — In forests, Con- 

 cepcion, Prov. Tarlac, Luzon, November 26, 1903, E. D. Merrill 

 (no. 3614). — Between Baguio and Sablan, fls. white, November 

 19, 1904, R. S. Williams (no. 1927). — Mt. Mariveles, Prov. 

 Bataan, Luzon, November 25, 1903, R. S. Williams (no. 266). 



Malay Peninsula, lower Burma. 



H. (§ Salaccenses) ARISTULIFERA Reichb. f., Bonplandia 

 3: 213 (1855); Kranzlin in Engler's Bot. Jahrb.16: 84 (1893), 

 and Orch. Gen. et Sp. 1 : 231. 



" H. (A. 1 b.) aristidifera : aff . H. lancifoliai Rich, f oliis 

 oblongolanceolatis apice breviter aristulatis, labelli tripartiti 

 partitionibus lateralibus setaceis, partitione media linearilancea 

 longioribus ; calcari acuto. Spithamsea-pedalis. Folia 4-6 usque 

 tripollicaria, dimidium pollicem lata. Caulis pars superior bi- 

 trivaginata, vaginae arctae acutae remotiusculae. Racemus elonga- 



