71 



obtu«e or subacute at the base, membranaceous, glabrous, but scabro-Tiispidu- 

 lous on the midrib and ciHated on the margins, quite green: very minutely 

 pellucid-punctate under lens, attaining 12cm. long, ocm. wide ; lateral 

 veins many, erect-patent, arcnate ; petiole usually winged above by the 

 decurrence from the blade ; sheath usually longer than the petiole, mem- 

 branaceous, glabrous below, disparsedly adpressed-hirsute above, setoso- 

 ciliated, attaining ]icm. in length. Spikes terminal and axillary, nutant, 

 rather densely flowered, but interruptedly flowered and leafy at the below ; 

 rachis filiform ; bracts short, vagiuate, truncate, slightly ciliated. Flowers 

 3-7-fasciculate, pedicellate, 3mm. long and across, greenish-white. Perianth 

 4-cleft, campanulate, pellucid-punctate ; segments oval or oval-elliptical, 

 rounded at the apex. Stamens 6, included. Pistil slightly lower than 

 the stamens in height ; ovary ovoid-oval ; styles 2 sometimes 3, connate 

 below, erect-patent, slightly shorter than the ovary ; stigma capitate. 

 Akene enclosed in the persistent perianth, rounded-ovoid, biconvex, mixed 

 with trigonous ones, nigro-castaneous, minutely ruguloso-granulated, 2mm. 

 long and broad. 



Hah. Prov. Tosa : Sakawa, cult. {T. Malcino\ Oct. 1, 1887), Osato, 

 cult. {T. YosJiinoga ! Nov. 1891) ; Prov. Uzent : Hishitsu in Nishitagawa- 

 gori, cult. {T. Nagasaival Sept. 19, 1893); Prov. Musashi : Tokyo, cult. 

 (T. 3Ialdno\ Sept. 1896). 



This is cultivated for the acrid leaves which are used as a condiment, 

 and is never found in the wild state. It is much larger than the type 

 and entirely green. 



r- Maximowiczii (Kegel). 



Polygonum 3Iaximowicui Kegel Gartenfl. (1865) p. 99, tab. 468 ; 

 Franch. et Sav. Enum. PI. Jap. I. p. 396. 



Polygonum gramineum ]\Ieisn. in Miq. Ann. Mus. Bot. Lugd.-Bat. II. 

 p. 59; Miq. Prol. FI. Jap. p. 299. 



Ovary ovoid, compressed ; styles 2, connate at the base, as long as the 

 ovary ; stigma capitate. 



Hah. Prov. Musashi: Tokyo, cult. {T. Mahim\); Prov. Shimotsuke : 

 Kiyotaki in Nikko, cult. {T. iMahinol Sept. 4, 1903). 



Only cultivated for the acrid leaves. 

 ' 0. fastigiatum Makino. var. nov. 



Annual, erect, fastigiately much branching, densely leaved, attaining 

 5 decim. in height. Stems slender, terete, glabrous, nodose ; nodes turged 

 and glabrous ; internodes short, shorter than the leaves. Leaves lanceolate 

 or narrowly lanceolate, acuminate, attenuated below into the petiole, mem- 



