508 



Saxifragaceae 



ovate to ovate-orbicular, 2-5 cm. long, 2.5-6 cm. wide, deeply 

 cordate, hirsute and minutely glandular-puberulous on both 

 sides, subacute to acute, shallowly 5-lobed, incised and 

 toothed; scapes 15-25 cm. long, glandular-puberulent, coarsely 

 hairy at the base, 2- to lO-flovifered, the pedicels short; calyx- 

 lobes depressed-deltoid, subacute, spreading, subrecurved at 

 the tip; petals pinna tiparted, minutely glandular, the disc 

 prominent; stamens inserted on the margin of the disc, very 

 short; style very short, entire, the stigma punctiform; seeds 



often glandular. Apr.-June. Along streams and ravines in 



mountains; Honshu, Shikoku, Kyushu. 



5. Mitella acerina Makino. Momiji-charumeru-so. 

 Rhizomes elongate, branched, creeping; leaves broadly ovate, 

 4-12 cm. long, 4-10 cm. wide, acute to acuminate, deeply 

 cordate, acutely 5- to 7-lobed, incised and toothed, thinly pilose 

 above, glabrous beneath, the petioles 15-30 cm. long, glabrous, 

 the stipules glabrous; scapes glabrous, 20-40 cm. long; racemes 

 10-20 cm. long, rather densely short-glandular, many-flowered; 

 calyx-lobes erect in anthesis, recurved at the tip, ovate-deltoid; 

 petals 3-parted, minutely glandular; styles 2, very short, the 



stigma thickened, indistinctly 2-lobed; seeds not papillose. 



May-June. Wet places along ravines and streams in moun- 

 tains; Honshu (Japan Sea side of centr. and Kinki Distr.). 



6. Mitella leiopetala Ohwi & Okuyama. M. japonica 

 var. integripetala Makino; M. stylosa var. integripetala (Ma- 

 kino) Ohwi; M. stylosa forma integripetala (Makino) Hara 

 Hariben-charumeru-so, Takimi-charumeru-s6. Rhi- 

 zomes somewhat thickened, creeping, with a tuft of leaves at 

 the apex; radical leaves ovate, 4-5 cm. long, 3-4 cm. wide, 

 cordate, subacute to obtuse, obsoletely lobulate and irregularly 

 toothed, hirsute on upper side, sparsely papillose-pilose beneath, 

 the petioles 7-10 cm. long, purplish, hirsute, the stipules white- 

 scarious, oblong; scapes terete, about 25 cm. long, whitish 

 papillose-pilosulous, white-hairy at base; racemes about 7 cm. 

 long, many-flowered, the bracts minute, the pedicels shorter 

 than the calyx; calyx obconical, brown-purple, 3.5-4 mm. long, 

 the lobes about 1.2 mm. long, deltoid, erect, the tip recurved, 

 glandular externally; petals linear-subulate, 2.5-3 mm. long, 

 entire or very rarely with a short lobe on one or both sides; 



styles very short, the stigma 4-lobed; seeds papillose. Apr. 



Wet places along ravines and streams in mountains; Honshu 

 (Ise and Mino Prov.) ; rare. 



7. Mitella stylosa H. Boiss. M. longispica Makino, pro 



parte; M. japonica Makino, pro parte, non Maxim. Charu- 



MERu-so. Rhizomes rather short, thickened; radical leaves 

 tufted, broadly ovate, 4-8 cm. long, 3-5 cm. wide, obtuse to 

 subacute, deeply cordate, shallowly and irregularly toothed, 

 long-hirsute and minutely glandular-puberulent on both sides; 

 scapes 30-50 cm. high, hirsute below; racemes 15-30 cm. long, 

 many-flowered, short glandular-puberulent; calyx-lobes erect, 

 ovate-deltoid; petals 3-parted, the segments narrowly linear, 

 glandular-dotted; styles very short, thickened, the stigma shal- 

 lowly 2- to 4-lobed; seeds not papillose. Apr.-May. Wet 



places along streams and ravines in foothills; Honshu (Kan to 

 Distr. and westw.), Kyushu. 



8. Mitella makinoi Hara. M. japonica Makino, pro 

 parte, non Maxim. — — Shikoku-charumeru-so. Rhizomes 

 ascending, thickened, with a tuft of radical leaves at the tip; 

 leaves broadly ovate, 2-7 cm. long, 2-6 cm. wide, acute, cor- 

 date, 5- to 7-lobulate, toothed, coarsely hirsute on upper side, 

 with rather short spreading glandular hairs beneath; scapes 

 20-40 cm. long, glandular-hairy; racemes 15-25 cm. long. 



many-flowered; calyx-lobes erect; petals pinnately parted, 

 glandular-dotted; style short, the stigma thickened, retuse; 

 seeds papillose. Apr.-May. Shikoku. 



9. Mitella koshiensis Ohwi. Koshi-no-charumeru-so. 

 Rhizomes thickened; leaves tufted, broadly ovate to orbicular- 

 ovate, 3-6 cm. long and nearly as wide, cordate, acute, shal- 

 lowly 5-lobed, incised, long-hirsute on both sides, the petioles 

 3-10 cm. long, with coarse reddish hairs, the stipules scarious, 

 glabrous; scapes long-hirsute; racemes glandular-puberulous, 

 rather many-flowered; calyx-lobes depressed-deltoid, subacute, 

 spreading in anthesis, with a slightly recurved tip; petals red- 

 dish, pinnately parted, the segments linear, glandular-dotted; 

 stamens very short; styles very short, the stigma shallowly 2- 



lobed, the lobes retuse; seeds not papillose. May. Honshu 



(Japan Sea side, Etchu and Echigo Prov.). 



10. Mitella furusei Ohwi. Mikawa-charumeru-s6. 

 Rhizomes creeping, densely leaved near the top; leaves broadly 

 ovate, 3-6 cm. long and nearly as wide, slightly lobulate, ir- 

 regularly toothed, acute, pilose, the petioles with long multi- 

 cellular hairs, 5-10 cm. long; scapes 30-45 cm. long, pilose; 

 racemes simple, loosely many-flowered, glandular on the axis 

 and pedicels; flowers greenish; calyx-lobes 5, deltoid, spread- 

 ing at anthesis, erect in fruit, uniformly glandular-pilose on 

 back and on margin, acute, often shallowly lobulate; petals 5, 

 purplish, spreading, 5-6 mm. long, glandular-roughened, pin- 

 nately divided, with 4-5 pairs of filiform lobes; stamens 5, 

 anthers yellow, nearly sessile, obsoletely lobulate; seeds fusi- 

 form, about 1.2 mm. long, not papillose. May. Honshu 



(Mikawa Prov.). 



11. Mitella japonica (Sieb. & Zucc.) Maxim. Mitellop- 



sis japonica Sieb. & Zucc; M. triloba Miq. O-charumeru- 



s6. Rhizomes thickened; leaves tufted, ovate to narrowly 

 so, 5-10 cm. long, 3-7 cm. wide, acute to short acuminate, 

 cordate, usually shallowly 5-lobed and incised, long-hirsute on 

 upper side, glandular-hairy beneath, the nerves sometimes 

 without glandular hairs, the petioles with spreading glandular 

 hairs, the stipules ciliate; scapes 20-35 cm. long, glandular 

 pilose; racemes many-flowered; calyx-lobes depressed-deltoid, 

 acute; petals with 5-7 linear-subulate glandular-dotted seg- 

 ments; styles very short, the stigma thickened, the lobes retuse; 



seeds not papillose. Apr.-May. Wet places along streams 



and ravines in mountains; Honshu (Kinki Distr. and westw.), 

 Shikoku, Kyushu. 



12. Mitella kiusiana Makino. Tsukushi-charumeru-so. 

 Rhizomes elongate, branched; leaves rather loosely arranged, 

 broadly ovate, 2-7 cm. long, 1-6 cm. wide, acute, cordate, 

 acutely 5-lobulate, and irregularly toothed, long-hirsute above 

 and on nerves beneath, the petioles 4-10 cm. long, brown- 

 hirsute, the stipules glabrescent; scapes 15-20 cm. long, hirsute 

 below, glandular-pilosulous above; racemes rather many- 

 flowered; calyx-lobes deltoid, acute, spreading, with a slightly 

 recurved tip; petals pinnately parted into linear-subulate glan- 

 dular-dotted segments; styles 2, bifid, the lobes entire or some- 

 what retuse; stigma not thickened; seeds papillose on back. 



Apr.-May. Along ravines and streams in mountains; 



Kyushu. 



13. Mitella yoshinagae Hara. Tosa-charumeru-so. 

 Rhizomes elongate, branched; leaves rather loosely arranged, 

 ovate, 3-9 cm. long, 2-7 cm. wide, acute, cordate, 3- to 4- 

 lobulate on each side and incised, long-hirsute on upper side 

 and on nerves beneath, minutely glandular-pilose beneath; 

 scapes hirsute on upper side and on nerves beneath, minutely 



