1S02. 1 xDS 



Observations on the Flora of Japan. 



(Continued from p. 152.) 



By 

 T. Makino, 



Assistant in the Botanical Institute, Science 

 College, Lnperial University of Tokyo. 



Platanthera (Bifolife, Monophyllfe) nipponica Makino sp. nov. 



Tubers 2, radiciform, oblong-fusiform at the base. Stem 25-44 cm, 

 high including the raceme, very slender, furnished with 2 cataphylls at the 

 base. Leaves 3-8 ; the lowest one which is situated in the lower part of 

 the stem largest and normal being broadly linear, acute, evaginate or very 

 shortly vaginate at the base, erect, 4-7 cm. long, 5-7| mm. wide ; the 

 superior ones much smaller, bract-like, linear, acuminate, evaginate, erect, 

 distant, 6-28 mm. long. Raceme erect, laxly 4-G-flowered, 3-6^ cm. long ; 

 rachis slender ; bracts subulato-lanceolate, acuminate, half the length of the 

 ovary. Flower viridescent, about 4-7 mm. across. Sepals obtuse, membra- 

 naceous, 1 or 3-nerved ; the dorsal one erect, ovate ; lateral ones deflexed 

 down, very slightly longer than the dorsal one, oblong, somewhat oblique 

 in form. Petals erect, galeate with the dorsal sepal and equal to him in 

 length, carnosulate, oblong-lanceolate or ova to-oblong, very obtuse, 2-nerved. 

 Labellum a little longer than the perianth, simple, carnose, oblong-ligalate, 

 or narrowly oblong, slightly attenuated below, obtuse, 3-4| mm. long. 

 Calcar slender, transversely turned backwards and curved upward, 1^ or fi 

 as long as the ovary, obtuse, slightly and gradually incrassate towards the 

 apex, 7-14 mm. long. Ovary cylindrical, curved, 5-9 mm. long. 



Hah. Prov. Eikuchu : Mt. Kurikoma (T. Mah'no ! Aug. 1890) ; Prov. 

 EiCHfi: Mt. Tate-yama (6'. i/.-eHO ! herb. Sc. Coll. Imp. Univ. Tokyo, Aug. 

 3, 1892) ; Prov. Iyo : Hatadera (K. Okudaira ! June 1894), Near Matsu- 

 yama (Z. Umemura ! July 4, 1897) ; Prov. Bitchu : Mt. Abemi-yaraa {Z. 

 YosUno\ July 1901). 



This species comes nearest to Phdmdhera tipvloides Lindl, or its 

 varietv ? 



