IMS]. OBSERVATIONS ON THE FLORA OF JAPAN. \\ 



Nom. Jap. Miyama-futabaran (now). 



Hah. Prov. Shimotsuke : Nikko (B. Yalabe ! herb. Sc. Coll. Imp. 

 Univ. Tokyo, July 31, 1877), Mt. Nyoho (H. Taheda ! Aug. 18, 1901) ; 

 Prov. Shinano: Mt. Yatsugatake {K. Tanahal Aug. 1902; Y. Yabe ! herb, 

 ibid. Aug. 19, 1902); Mt. Togakushi (//. Takedal July 20, 1904); Prov. 

 Kai: Mt. Kuroto in Kita-Kom i-gori (H. Talcedal Aug. 12, 1903); Prov. 

 Iwashiro: Mt. Iide (G. Nakaharal Aug. 1904). 



This species is found in sub-alpine shady part of mountains. It differs 

 apparently from Listera pubenda Maxim., which has the patulous perianth, 

 ovate sepals, linear-petals, linear-cuneate labellum 3-4-times as long as the 

 perianth, and arcuate column ; and also from L. pinetoncm Lindl., which 

 has the lato-deltoid leaves, very short raceme, larger flower, connivent 

 perianth, ovate sepals, linear petals, and long and arcuate column. It 

 approaches very much to L. convallarioides Nutt., but the latter has 

 the orbicular-ovate obtuse leaves, cuneato-oblong emarginate or shortly 

 2-lobed labellum, and slender column. It is also distinguished from L. Esch- 

 scJiohiana Cham., which bears the foliaceous bracts suhequal to pedicels, 

 angustato-lanceolate acute perianth, narrower labellum, and the elongate 

 column. L. japonica Bl. is easily distinguishable from my species by its 

 deltoid leaves and entire (not cleft) labellum. 



Listera shikokiana Makino in Bot. Mag., Tokyo, VII. (1893) p. 68. 



Whole plant 5-17 cm. in height, flaccid. Rhizome filiform, ascend- 

 ing, short or rather long; roots long- filiform. Stem erect, purplish, 

 subsacculent and glabrous below the leaves but above them thinly minutely 

 glanduloso-pubescent including the rachis of raceme, with 2 to 3 very thinly 

 membranaceous adpressed sheaths at the base, the upper sheath often slightly 

 remote from the rest and 10-17mm. long. Leaves 2, oppositely approximate, 

 situated usually above the middle of the whole plant, sessile, ovato-deltoid 

 or deltoid, subcuspidato-acute or sharply acute at the apex, broadly truncate 

 and sometimes subcordate below, abruptly and very shortly produced at the 

 base, entire and crispulate on margin, membranaceous, glabrous, sometimes 

 albescent along the midrib on the upper surface, 12-21 mm. long, 7-20 mm. 

 broad, 3-nerved, with a vein between the main nerves and in their outsides, 

 the outer vein often with an external branch ; veinlets loosely anastomos- 

 ing. Raceme erect, loosely 2-5 flowered ; rachis 10-32 mm. long ; bracts 

 {Fig. V. 1.) small, much shorter than pedicels, broadly ovate, obtuse or 

 acute, embracing the base of pedicels, thinly membranaceous, 1-nerved. 



