30 ORCHIDACEM 



ily distinguishable by the longer, looser inflorescence, appendaged 

 lateral sepals, and very different petals. 



Flowers yellowish green, on rocks, 1600 ft. above sea-level, 

 Lamao River, Prov. Bataan, Luzon, August 8, 1904, E. B. 

 Copeland (no. 1403). — Maragondong, Prov. Cavite, Luzon, 

 July 29, 1905, E. D. Merrill (no. 4172). — Prov. Rizal, Luzon, 

 August, 1905, Ahern's collector (no. 3243). — Mendez Nunez, 

 Prov. Cavite, August, 1906, L. Mangubat (no. 1284). 



H. (§ Peristylus) BIS-ffiTA sp. nov. Aff. H. aristatce Hook, 

 f. et H. mo?iticolce Ridl. forma floris. Folia ad basim caulis 



collecta, 3-8 cm. longa, 1-3 cm. 

 lata, ovata vel oblongi-lanceolata, 

 acuta. Scapus erectus, 20-45 cm. 

 longus. JBractece lineari-oblongae, 

 acutae. Spica laxiflora, 11-28 cm. 

 longa. Sepala lateralia erecta, 

 lineari-lanceolata, 1-nervia, obtusa, 

 3-3.5 mm. longa. Sepalum supe- 

 rius ovatum, 1-nervium, lateralibus 



Habekakia eis^ta mult0 latius > circa 4 mm - longum. 



Petala ovato-falcata, 1-nervia, 4 



mm. longa, sepalo dorsali similia, apud basim circa 2 mm. lata. 

 Labellum trifidum, super unguem concavum labro tridentato trans- 

 verso retrorso instructum ; lacinia media lineari-hastata, 3 mm. 

 longa ; lacinise laterales filiformes, 22 mm. longae. Calcar breve, 

 ad apicem retusum, 2 mm. longum. 



This species is allied to H. aristata, Hook, f., from which it is 

 at once distinguishable by the much longer lateral divisions of the 

 lip and by the very different leaf arrangement. It is also closely 

 allied to H. tipulifera Par. & Reichb. f ., which has the leaves near 

 the middle of the stem. My material may prove to be merely 

 a form of H. tuberculata Reichb. f. Just behind the point where 

 the lateral filiform divisions arise, the labellum is provided with 



