taw.] OBSERVATIONS ON THE FLORA OF JAPAN. 73 



Nom. Jap. Hikage-sumire, Ezo-hosumire, Shin-sumire. 



Add. Hab. Prov. Kodzuke : Yoshii in Tano-gori (T. Avail May 8, 

 1903) ; Prov. Shimotzuke : Foot of Mt. Nakimushi in Nikko (31. Furukawa ! 

 Aug. 23, 1903); Prov. Iwashiro : Obama-mura in Adachi-gori (G. NaJca- 

 haral May 1904); Prov. Shimoosa : Chiba (I. Yamatsutal June 1905). 



Viola Savatieri Makino in Bot. Mag., Tokyo, XVI. (1902) p. 125.= 

 Viola (Nomimiunj) Patrini DO. var. acuminata (Franch. et Sav.) Makino. 



Viola. incisa var. acuminata Franch. et Sav. Enum. PI. Jap. I. p. 

 41, et II. p. 248; Maxim, in Mel. Biol. IX. p. 720. 



Nom. Jap. Yedo-sumire (oldest name). 



Viola kiusiana Makino in Bot Mag., Tokyo, XVI. (1902) p. 138.= 

 Viola (Nomimium) diffusa Gingins in DC. Prodr. I. (1S24) p. 298; 

 Spreng. Syst. Veg. I. (1825) p. 799 ; Hook. fil. et Thorns, in Hook. fil. Fl. 

 Brit. Ind. I. p. 183 (1872) ; Benth. Fl. Hongk. p. 20 ; Maxim, in Mel. 

 Biol. IX. p. 735, et PI. Chin, in Act. Hort. Petrop. XL p. 61 ; Franch. 

 PI. David. I. p. 43 ; Forbes et Hemsl. in Journ. Linn. Soc. XXIII. p. 52 ; 

 Henry List PI. Formos. p. 18 ; Diels, Fl. Cent.-Chin. in Engler's Bot. 

 Jahrb. XXIX. p. 477. 



Viola tenuis Benth. in ' Hook. Lond. Journ. Bot. I. (1842) p. 482.' 

 Perennial, caulescent, estoloniferous, pallid-green. Bhizome not long, 

 erect or ascending, rooting ; roots slender, with delicate slender rootlets, 

 white. Main stem erect, short or inconspicuous ; branches floriferous and 

 foliiferous, loosely tufted, simple, ascending or decumbent, axillary to radical 

 leaves, few to several, terete, glabrous or sparsely pilose with white patent 

 hairs alo:;g one side, viridescent and sometimes with a purple shade, at- 

 taining about 8 cm. long in flower, but afterwards much decumbent and 

 diffuse, stolon-like, attaining about 20 cm. in length, slender, loosely with 

 alternate leaves below and also with a tuft of leaves and short-pedicellate 

 cleistogamous flowers at the apex, from where rooting in autumn as to 

 form an independent stock. Leaves petiolate, ciliated and sparsely pilose 

 with white hairs above, nearly glabrous beneath, membranaceous, wholly 

 green ; radical ones tufted, elliptical to ovato- elliptical, obtuse at the apex, 

 rounded and decurrent to the petiole at the base, regularly crenate, attain- 

 ing about 3 cm. long, 2 cm. broad in flower, but afterwards attaining about 

 7^cm. long, 4^cm. broad, the midrib prominent beneath as are delicate and 



