June 1912.] T. MAKINO.—OBSEBVATIO:SS ON THE FLORA OF JAPAN. I75 



A common species in the northern Japan. It is larger than 

 Viola grypoceras A. Gray, having the broader leaves, and this 

 plant usually turns slightlj^ reddish when dr\^ I have named 

 this species in honour of Prof. Shunsuke Kusano of the 

 Agricultural College, Im.perial University- of Tok\'o. 



Ajuga has tar da Alaldno. = A. decumhens Thunb. x A. 

 yezoensis Maxim. 



Stem decumbent and rooting below, but erect or ascending 

 above and attaining about S cm. in height, loosely caespitose, 

 patently pilose with pale hairs, purpurascent; roots hbrous, 

 long, pallid, with fine rootlets. Leaves petiolate, opposite and 

 the pairs remotely placed, erect-patent or spreading, oblong- 

 oblanceolate or oblong, obtuse or acutish at the apex, cuneately 

 attenuated at the base, coarsely and irregularly sinuato-dentate, 

 ciliated, green and thinly pubescent and purpurascent along the 

 midrib above, green and shaded with purpurascent colour and 

 thinly pubescent on nerves beneath, subflaccidly herbaceous, 

 2-5 cm. long, 1-2 cm. broad ; petiole semiterete, flatly grooved 

 in front, pilose with pale and patent hairs, |-2 cm. long. 

 Verticillasters axillarj^, sessile, 1-3-flowered. Flowers very 

 shortly pedicellate; pedicel 1-2 mm. long, purpurascent. Calyx 

 campanulate, about 5-6 mm. long, patently pilose with pale 

 hairs, 5-fid, purplish-viridescent, persistent; tube obconical, 

 slightly shorter than the lobes, 2-2.^ mm. long; lobes subulate, 

 acuminate. Corolla much exserted, about 7mm. long; upper 

 lip very short, emarginate; lower lip large, 3-parted with acute 

 sinuses, lateral lobes patent, oblong-lanceolate, acute, midlobe 

 much broader, square-cuneate, truncato-emarginate with a 

 minute projection in the sinus at the apex, violascent ; tube 

 long, slender, abruptly enlarged at the apical portion, puberu- 

 lent dorsally. 



Nom. Jap. Kiran-nisbikigoromo (nov.). 



Hab. Prov. AIusashi: Mt. Takao (T. Makinol May 5, 

 1912). 



This bastard is rare. The stem and the colour of 

 flowers resemble those of Ajuga decumbens Thunb. and the 



