April. 1914,] T. MAKING. - OBSEE VA TIO NS ON THE FL OR A OF JAPAN. HI 



the lowest interrupted flower-cluster, 5-6 ram. across, densely 

 flowered ; rachis filiform, glabrous. Flower-clusters closely 

 placed, the lowest one interruptedly and remotely placed ; 

 bracts turbinate, obliquely truncate and fimbriato-ciliated with 

 long or rather short setae, glabrous, scarious towards the apex, 

 2-3 mm. long. Flowers smafl, pedicellate, purplish, 2 mm. 

 long. Calyx 5-parted, scantily glanduloso-punctate or nearly 

 so or not ; segments oval or oval-elliptical, rounded at the 

 apex, concave, the outer ones subcarinate dorsally. Stamens 

 5 or 7, included; filament subulate; anther rounded. Pistil 

 included, slightly exceeding the stamens ; overy oval, acute at 

 the apex, trigonous, smooth ; style somewhat shorter than the 

 overy, 3-parted, the connate portion shorter than the arms ; 

 stigma capitate. Achene included, as long as the persistent 

 calyx, oval or ovoid-oval, acutish or acute at the apex, trigo- 

 nous with obtuse-angles, black, smooth, shining. If mm. long. 

 Flowers in May-July. 



Nom. Jap. Hime-tade (Jmzo Matsumura). 



Hab. Prov. SHINANO : Asama (R. Yatabe and J. Matsu- 

 mura ! Herb. Sc. Coll. Imp. Univ. Tokyo, July 20, 1880) ; 

 Prov. TOSA : Takaoka-gori (T. Making ! May 1886), Doi in 

 Aki-g6ri (T. Making ! June 3. 1892) ; Prov. SAGAMI : Hira- 

 tsuka (T. Making ! June 24, 1900). 



This species comes near to Polygonum minus Huds. forma 

 trigonocarpum Making, but it is a much smaller plant having 

 the erect stem, leaves punctulate with spots of one kind, the 

 smaller and deeper-coloured flower. It grows on the humous 

 or rarely sandy soil, and flowers in May-July. 



Polygonum minus Huds. F1. Angl. ed. 1 (1762), p. 148; 

 Meisn. in DC. Prodr. XIV. p. 111. 

 forma trigonocarpum Making. 



Polygonum serrulatum Matsum. in Sched. Herb. Sc. Coll. 

 Imp. Univ. Tokyo, pro parte, non LaGasca. 



Annual, terrestrial, flaccid. Stems diffuse, elongate, 

 loosely ramose, terete, smooth, herbaceous. Leaves very 



