Plantae Japonenses novae vel minus cognitse. 



{Continued from p. 82.) 



By 

 T. Makino, 



Assistant of Botany in /he Science College, 

 Imperial University, Tokyo. 



Cypripedium (DiphylUe) Yatabeanum Makino sp, nor. 



Perennial. Roots few, issueing from nodes of the rhizome, flexnous, 

 slender, filiform, yellowish-brown, with whitish root-hairs. Rhizome hypo- 

 greous, long creeping, slender, terete, stout-filiform, with the internodes 

 4-6 cm in length, smooth, darkish-yellowish-brown. Stem annual, ascending 

 from the youngest node of rhizome and immediately erect, 9-22 cm high, 

 slender, terete, 2-3 J mm in diameter, hirsute, with 2 membranaceous sheaths 

 at the base, the lower sheath smaller than the upper one which is often 

 hirsute externally above and 9i cm in the longest one, obliquely truncate 

 with an obtuse apex at its mouth. Leaves 2, at the extremity of the 

 stem, spreading, closely approximate to each other and spuriously opposite, 

 sometimes having the interval of 1J cm between them, superior one a little 

 larger than the inferior one, oval, or elliptical-oval, or elliptical ovate, obtuse 

 or roundish towards the base and clasping the stem by the base, shortly 

 and abruptly acuminate or acute with apiculate tip at the apex, thinly 

 herbaceous, 7-13 cm long, 4J—8 cm broad in inferior one, and 8-15 cm 

 long, 5-8 cm broad in superior one, even-sided, often obscurely waved, 

 ciliated, pubescent-hirsute along the nerves towards the base in the under 

 surface, glabrous in the upper surface, with usually 4 sometimes 5 arcuate 

 main nerves and numerous veinlets on each side of the midrib which forms 

 a carina towards the base beneath, transverse venules delicate, loose, not 

 conspicuous, and usually oblique. Peduncle erect, slender, pubescent-hirsute 

 with spreading hairs, 9-18 cm long in flower. Bract ample, erect, 

 longer than the ovary, ovate-lanceolate, acuminate, entire, obtuse and 

 clasping at the base, ciliated on margin, pnbescent-hirsute on both surfaces, 

 2-3 cm long, 7-12 mm wide, but sometimes 4§ cm long, 2 cm broad, 5-7- 

 nerved with venules between them. Flower terminal, solitary, large, 

 nodding. Sepals patent ; dorsal one ample, erect, ovate-oval, entire, ciliated, 

 20-25 mm long, 14-17 mm broad, acute, rounded at the base, pubescent- 



