234 ORCHIDACEM 



plates which are drawn out at the angle nearest the column into 

 acuminate points ; middle lobe shortly clawed, elliptical or ovate, 

 contracted near the apex into two divergent, triangular, falcate 

 lobules, 6 mm. long. Viscid disc of the pollinia lanceolate, acute. 



Between P. Schilleriana and P. Aphrodite Reichb. f. many 

 intergrading forms exist which are regarded by some authors as 

 natural hybrids. Of these P. leueorrhoda Reichb. f., which has 

 longer terminal filaments to the labellum than P. Schilleriana and 

 white flowers suffused with rose, is a well-known horticultural form. 



Epiphyte, fls. pale pink-purple, odorless or nearly so, leaves green- 

 ish above, purplish beneath, Laguimanoc, Prov. Tayabas, Luzon, 

 March 8, 1905, E. D. Merrill (no. 4018). — Very common in cul- 

 tivation in Lucrena, Pagbilao, and especially in Antimonan, leaves 

 green mottled with gray above, purplish beneath, only 3 specimens 

 seen in 2 days in forest, 2 in flower, 1 sterile, Antimonan, Prov. 

 Tayabas, Luzon, March 10, 1905, E. B. Merrill (no. 4024). 



Endemic. 



Var. ADVENA Reichb. f. Gard. Chron. n. s. 23: 174 (1885); 

 l'Orchidophile 5: 200 (1885). — Flowers spotless. Sepals and pet- 

 als light purple. Lip white, the side laciniae with mauve borders; 

 callus yellow with two light rose-purple spots in front. 



Var. IMMACULATA Reichb. f. Gard. Chron. n. s. 3 : 429 

 (1875) ; Rolfe Gard. Chron. n. s. 26 : 212 (1886) ; Stein Orchi- 

 deenb. 511 ; Veitch Man. Orch. PI. pt. 7, 37. — Var. delicata 

 Dean Floral Mag. 1877, t. 257. — Flowers light rose, unspotted, 

 borders nearly white. Side lobes of lip white with violet margin ; 

 callus yellow. 



Var. MAJOR Rolfe Gard. Chron. n. s. 26: 212 (1886).— 

 Flowers large and pale. 



Var. PURPUREA Hort. Journ. des Orch. 2 : 358 (1891) and 

 5: 9 (1894); O'Brien Gard. Chron. ser. 3, 15: 266 (1894); 

 Williams Orch. Gr. Man. ed. 7, 671; Sander Orch. Guide 206. — 

 Flowers bluish purple, lower portions of sepals and lip spotted. 



Var. SPLENDENS Hort. ex Carriere Rev. Hort. 58: 396 



