ORCHIDACEM 65 



sions filiform, about 8 mm. long. Spur clavate. Ovary somewhat 

 shorter. 



In shaded forests, Lamao River, Mt. Mariveles, Prov. Bataan, 

 Luzon, October, 1903, E. D. Merrill. — In woods, Lagiamanoc, 

 Prov. Tayabas, Luzon, October 15, 1904, //. iV. Whitford (908). 



MICROTIS, R. Br. 



M. unifolia, Rchb., f ., Beit. Syst. PI. 62 (1871). — Ophrys 

 unifolia, G. Forster, Prodr. Fl. Ins. Aus. 59 (1786) : " 0. unifo- 

 lia, bulbo ovato, scapo tereti vaginato, folio tereti fistuloso reflexo, 

 in medio pro emittendo scapo perforate." — Microtis porrifolia, 

 Spreng., Syst. Veg. 3: 713 (1826). 



Plant slender, 3 dm. high, monophyllous, from a small globu- 

 lar subterranean tuber. Roots fibrous. Leaf about 15 cm. long, 

 terete, shortly opened out near the stem and continued in a closed 

 sheath down the stem. Flowers minute, in a strict raceme, about 

 10 cm. long. Lip ligulate, obtuse, bicallose near the base, with a 

 papillose protuberance near the apex ; margin crisped or crenate. 



Dry sunny knoll, Baguio, Prov. Benguet, Luzon, January 

 19-February 26, 1903, B. LeRoy Topping (no. 97). 



CORYSANTHES, R. Br. 



C. Merrilli, sp. nov. Plantula nana, glabra. Tubera soli- 

 taria, globosa. Folium cordato-ovatum, acuminatum, utrinque 

 glabrum, textura membranacea, 7-21 mm. longum. Pedunculus 

 brevis. Bractea lineari-subulata. Flos fere sessilis, atropurpureus. 

 Phylla perigonii lateralia exteriora et interiora filiformia longis- 

 sima. Sepalum supremum ellipticum, maximum, galeatum, obtu- 

 sum. Labellum gynostemium amplectens, ad imum scrotiformi- 

 bicalcaratum, superne recurvum, limbus integerrimus. Columna 

 brevis, bialata. 



