1MM OBSERVATIONS ON THE FLORA OF JAPAN. 45 



Perennial, stolon iferous ; stolons long, filiform, hypogfeous, nodes remote 

 from each other and provided with minute scales ; roots delicate. Stem 

 erect, 5-28cm. long including the raceme, simple or ramose, gracile, tetragonous* 

 glabrous, green. Leaves opposite, long-petiolate, ovato-deltoid, with an obtuse 

 point at the apex, truncate or trnncato-snbcordate at base, but sometimes 

 about right-angled in the superior ones, coarsely inciso-dentate with obtuse 

 deltoid teeth, herbaceo- membra naceous, very thinly disparsed with pilose hairs 

 above, glabrous and sometimes purplish beneath, deep green, l-5cin. long, 

 l-4crn. broad ; veins loose ; petiole attaining 3cm. in length, glabrous. 

 Kaceme erect, laxly several-many-flowered, 1-6 cm. long, bracteate ; rachis 

 gracile, tetragonous, very thinly pilose, green ; bracts lanceolate or ovato- 

 lanceolate, very shortly petiolate or sessile, longer than pedicels, entire, very 

 thinly pilose, green, inferior ones often leafy and dentate, superior oues 

 gradually decreasing in size, the smallest one slightly exceeding the pedicel. 

 Flower pedicellate, small, 5-10mm. long, white ; pedicel shorter than flowers, 

 erect-patent, pilosulate, Ii-4inm. long, green. Calyx l|-2mm. long, cam- 

 panulate, green, patently and thinly glanduloso-pubescent externally, shallowly 

 bilabiate with entire lobes, in fruit enlarged to 3mm. in length and depressed 

 and close; appendage lato-orbicular, thinly glanduloso-pubescent in front and 

 glanduloso-ciliated, concavo-convex, green, enlarged to 3 mm. in width 

 in fruit. Corolla ascending ; tube tubular, a little curved at the base, 

 more or less enlarged above, finely glanduloso-puberulent externally and 

 thinly pilose internally; limb bilabiate, much shorter than the tube, the 

 upper lip small, erect, short, eniarginato-bilobed, the lower lip much larger 

 and longer, 3-lobed, minutely spotted, lateral lobes erect, smaller and 

 slightly shorter than the upper lip, ovato-deltoid, obtuse, the midlube 

 nearly pendulose, ample, longer than lateral lobes, again 3-lobulate, 

 lateral lobules subquadrangular-oval, patulous, the midlobule much wider 

 and longer, emarginate. Stamens 4, didynamous, inserted below the middle 

 of the corolla-tube, the longer ones equal to the upper lip in height ; 

 filament filiform, softly puberulent below ; anther short and broad, minute- 

 ly dense-ciliated on margins of anther- cells, the upper ones lato-cordate. 

 Style nearly ecpial to stamens in height, filiform, glabrous, curved under 

 the stigma ; stigma sub-bilobed, the upper lobe shorter. Ovary-lobes 

 globosn-obovoid, borne on a thick disk. Nutlets 1 mm. and a little more 

 across, slightly depressed, rounded at the top, muricate all over, black. 



Hab. Prov. Tosa : Mt. Yokogura (T. MaJcinol 1885, Aug. 28, 1887, 

 1889), Nanokawa (T. Makiuul Nov. 1SS4), Mt. Kurotaki (A'. Watanabe\ 

 Aug. 10, 18S8); Prov. Iyo: Nametoko (Z. Umemural July 12, 1894), 



