120 • BOTAXTOAL MAGAZINE. [Volxyii, 



This seems to be allied to Polygonum muricatum Meisn. and P. 

 stngosum R. Br., but it differs from the former, by the narrow leaves 

 and the densely many-ilowered capitate spike ; from the latter, chiefly by 

 the shining acute- triquetrous akene. It is widely distributed over Japan. 



var. ,5. latifolium Makino. 



Polygonum muricatum var. Maxim, in litt. 



Usually shorter, attaining 11 decim. in length. Stem ascending and 

 diffuse from the decumbent radicant base, loosely ramose. Leaves ovate 

 to elli{)tical, or elliptical-oblong, abruptly short-acuminate, truncate or 

 subcordate at the base, very minutely antrorsely scabro -ciliated on the 

 margin, l^-Tcm. long, |-3icm. broad, the lower ones often reilexed ; 

 petiole 2-18mm. long. Panicle loose ; peduncle filiform, longer than the 

 spike. Spike capitate to ellipsoid, 5-13mm. long, densely many-iiowered ; 

 bracts ovato-subulate, glabrous or thinly glanduloso-hispid, ciliated, mem- 

 branaceous. Flowers pedicellate, 2j-3mm. long, rose-purple above and 

 pale or pale-viridescent below ; pedicels 2-fasciculate, one shortly exserted 

 and other not, slightly glanduloso-hispid above. Perianth 5-cleft ; segments 

 elliptical or elliptico-oval, rounded-obtuse at the apex. Stamens 7-9. 

 Ovary ovoid; styles shorter than the ovary, connate half below or at the 

 basal portion. Akene enclosed in the perianth, ovoid, acute, acutely trique- 

 trous, umber, smooth, shining, 2jmm. long, the face ovate. 



Hah. Prov. Tosa : Sakawa {T. Mahino ! 1884), Arioka in Hata-goi'i 

 {T Makino \ Nov. 4, 1885), Koishiki near Kochi {S. Yano\ Sept. 1888), 

 G-odaisan {T. Blaldno. ! Sept. 29, 1892), Kambara {T. Makino ! Oct. 17, 

 1892), Edagawa {T. MaUnol Oct. 22, 1892); Prov. Sagami : Hakone 

 {T. 3Iakino\ Sept. 24, 1886); Prov. Musashi : Near Omiya-hachiman 

 {Pi. Yatabe and J. 3Iatsumura ! herb. Sc. 0^)11. Imp. Univ. Tokyo, Oct. 

 5, 1879), Kawasaki (T. Makino \)', Prov. Suo : Ouchi-mura {D. Nikai \ 

 herb. ibid. Oct 4, 1891); Prov. Tsushima: Kuta (K, Hiratal Oct. 17, 

 1902). 



Closely allied to Polygonum muricatum Meisn., but my plant has the 

 spike capitate and densely many-flowered, and the akene entirely wrapped 

 in the perianth. 



Platanthera (Bifoliae) Takedai Makino, sp. nov. 

 About 17-22cm. in height, glabrous. Tuber perpendicular, radiciform, 

 thicker towards the base and elongate towards the end ; roots few ; turio 



