146 ORCHIDACEM 



Flowers green, on exposed peak, at 3400-3700 ft. alt., Mt. Silay, 

 Island of Negros, May 12, 1906, H. N. Whitford (no. 1542). — 

 Mt. Halcon, Mindoro, alt. 2400 ft., November 10, 1906, E. B. 

 Merrill (no. 5848). 



Perak, Penang, Borneo, Java, New Guinea, Samoa. 



P. UNDULATUS var. LONGICALCARATUS (Rolf e) Schlech- 

 ter Mem. Herb. Boiss. 21 : 43 (1900). — P. longicalcaratus Rolfe 

 Kew Bull. 1894, 186. 



" Caulibus elongatis erectis demum pendulis distichophyllis, 

 foliis numerosis elliptico-oblongis apice reflexis apiculatis, race- 

 mis axillaribus numerosis paucifloris vaginis lanceolatis subim- 

 bricatis tectis, bracteis lanceolato-ovatis acutis concavis, fioribus 

 heterocbronicis carnosis, sepalo postico late ovato obtuso valde 

 concavo lateralibus subobliquis ovatis obtusis basi in mentum 

 longum calcariforme arcuatum productis, petalis rbomboideis ob- 

 tusis, labello longe unguiculato apice trilobo lobis lateralibus 

 rotundatis intermedio late ovato apice tridenticulato, disco bical- 

 loso, eolumna brevissima. . . . Caules 1-2 ped. longi. Folia 24 - 

 1*4 poll- longa, 4-7 lin. lata. Racemi ^-1 poll, longi. Brae- 

 teae ^ lin. longse. Pedicelli 2 lin. longi. Sepala 1^ lin. longa. 

 Petala 1 lin. longa. Mentum 4 lin. longum." — Rolfe, I. c. 



Plants from 2-6 dm. high. Leaves elliptic-oblong, distichous, 

 1.5-3 cm. long, 0.7-1.5 cm. wide. Flower sJwots generally longer 

 than the leaves and opposite them, produced all along the stem 

 from near its base. Spur 6 mm. long. Flower about 3 mm. long. 



On tree trunks, fls. pinkish, leaves often purple beneath, Sax 

 River, Prov. Zamboanga, Mindanao, February 5, 1905, R. S. 

 Williams (no. 2331). — Plants pendent from the trunks of trees 

 or from rocks, fls. pink and white, San Ramon, alt. 600 ft., Distr. 

 Zamboanga, Mindanao, January 2, 1904, E. B. Copeland (no. 

 1584). — Camp Keithley, Lake Lanao, Mindanao, April, 1906, 

 Mary Strong Clemens (no. 516). 



Borneo. 



