Nov. inoL] MAKTNO.—OBSERV. ON THE FLORA OF JAPAN. 155 



Poterium canadense A. Gray, Man. Bot. ed. 5 (1872) p. 150; 

 Franch. et Sav. Enum. PL Jap. I. (1875) p. 134. 



var. japonensis Makino, var. hoy. 



Leaflets oblong or narrowly oblong, truncato-cordate at 

 the base but obtuse or acute in cauline ones, serrate. Spike 

 long-cylindrical. Flowers purple, centripetally expanded. 



Calyx-tubes elliptical, compressed, not angulate, pubescent with 

 subadpressed hairs. Stamens long-exserted, 3- nearly 5-times 

 as long as the calyx -lobes ; filaments filiform, gradually dilated 

 towards the apex, narrower than the anther ; anther rounded. 



Nom. Jap. Ezo-touchiso. 



Hah. Prov. Hidaka in Hokkaido : Horobetsu (K. Miyabe ! 

 herb. Sc. Coll. Imp. Univ. Tokyo, Aug. 20, 1884). 



Sanguisorba riishirensis Makino, sp. nov. 



Perennial, 3— 4Jdecim. in height. Rhizome long, erect or 

 ascending, covered with old petioles above, dark-rufous. 

 Stem, petioles, and lower portion of the rachis of leaves crispato- 

 rufo-pubescent. Leaflets oval-ovate to ovato-oblong, cordate 

 at the base, obtuse at the apex, simply and duplicately serrate 

 with erect-patent acute coarse teeth, subglaucous beneath, 

 l^-6cm. long, l-4cm. broad, distinctly petiolulate, sometimes 

 stipellate ; petiolule J-lJcm. long ; cauline leaves few and ab- 

 breviated. Spike erect, long-cylindrical, 4-9cm. long, across. 

 Flower about 6mm. across, white, centripetally expanded ; 

 bracts angustate, linear, obtuse-tipped, glabrous above and 

 ciliated below, equalling or exceeding the calyx. Calyx-lobes 

 patent, elliptical ; tube compressed, rounded, alato-angulate, 

 pubescent. Disk inconspicuous. Stamens 4, long-exserted, 

 3-5-times as long as the calyx-lobes, gradually dilated and 

 flattened in the upper half, suddenly obtuse under the anther at 

 the apex, narrower than the anther ; anther rounded, ochraceous. 

 Style exserted upon the calyx-lobes ; stigma manifestly fimbriate. 



Nom. Jap. Riishiri-touchiso (nov.). 



Hah. Prov. Kit ami in Hokkaido : Isl. Riishiri (T. Makino ! 

 Aug. 1903). 



An alpine species. It has a feature resembling 5. ohtusa 



