658 



Onagraceae 



short, curved-puberulent; ovary puberulent; calyx 4-6(-7) 

 mm. long; stigmas capitate, the styles slender, much longer 

 than the stigmas; capsules 3.5-8 cm. long, the pedicels 4-15 

 mm. long; seeds lanceolate-oblong, 0.8-1.2 mm. long, rounded 

 at apex, slighdy narrowed toward the obtuse base, minutely 



papillose, the coma white. July-Aug. Moist woods in 



mountains; Hokkaido, Honshu, Kyushu. Sakhalin, s. Ku- 



riles, Manchuria, and China. 

 Var. nudicarpum (Komar.) Hara. E. nudicarpum Komar. 



Ke-nashi-iwa-akabana. Glabrous except margins of 



leaves. Mountains; Hokkaido, Honshu (centr. distr.). 



Korea and Manchuria. 



10. Epilobium pyrricholophum Fr. & Sav. var. pyrri- 

 cholophum. E. tetragonutn var. japonica Miq.; E. japonicum 

 Hausskn.; E. oUgodontum Hausskn.; E. pyrricholophum var. 

 japonicum (Miq.) Hara; E. quadrangulum Lev.; E. chryso- 

 coma Lev.; E. arcuatum Lev.; E. na\aianum. Lev.; E. axillare 



Franch. Akabana. Stolons slender, loosely leafy; stems 



terete, 15-90 cm. long, more or less curved-puberulent, densely 

 glandular-puberulent on upper part; leaves ovate to ovate- 

 lanceolate, 2-10 cm. long, 0.5-3 cm. wide in the median ones, 

 acute with an obtuse tip, rounded to subcordate at base, some- 

 what irregularly toothed; flowers 5-10 mm. long, rose; ovary 

 densely glandular-puberulent, sometimes also sparingly curved- 

 puberulent; calyx 4-6.5 mm. long; stigmas clavate, slightly 

 shorter than the styles; capsules 3-8 cm. long, glandular- 

 puberulent, the pedicels 7-15 mm. long; seeds lanceolate-ob- 

 long, 1.5-1.8 mm. long, rounded at apex, narrowed to the 

 obtuse base, densely papillose, the coma usually red-brown. 

 July-Sept Wet places in mountains and lowlands; Hok- 

 kaido (Oshima Prov.), Honshu, Shikoku, Kyushu; common. 

 ^Korea and China. 



Var. curvatopilosum Hara. E. rouyanum Lev.; E. ha\- 

 Xpdense Lev.; E. ma\inoense Lev.; E. prostratum Lev.; E. 



\iusianum Nakai; E. myo\oense Koidz. Mutso-akaeana. 



Stems puberulent and with glandular hairs on the uppermost 

 part; leaves mosdy curved-puberulent; pedicels and ovary 



curved- and glandular-puberulent. Hokkaido, Honshu, 



Kyushu. s. Kuriles. 



11. Epilobium glandulosum Lehm. var. asiaticum 

 Hara. E. maximowiczii Hausskn.; E. glandulosum forma 

 brevijolia Hausskn.; E. glandulosum sensu auct. Japon., non 

 Lehm.; E. punctatum Lev.; E. minutiflorum sensu auct. Japon., 

 non Hausskn. Karafuto-akabana, Azoma-akabana. Rhi- 

 zomes short, with subsessile innovation-shoots on the neck; 

 stems erect, 35-80 cm. long, usually branched, with slender 

 longitudinal ridges, glabrous or curved-puberulent on the 

 ridges at base, curved- and glandular-puberulent on upper part; 

 median leaves oblong-lanceolate, 4-9 cm. long, 1.5-2.5 cm. 

 wide, acute, rounded or subcordate at base, irregularly toothed, 

 glabrescent, sessile or very short-petioled; flowers small, usually 

 3.5-5 mm. long, rarely to 7 mm. long, minutely mucronate at 

 apex in bud, the pedicels very short, curved- and glandular- 

 puberulent; ovary densely curved- and sparingly glandular- 



puberulent; calyx 3-4 mm. long; stigmas clavate; capsules 4-6.5 

 cm. long, the pedicels 3-6 mm. long; seeds ovate-oblong, 0.8- 

 1.4 mm. long, subrounded at apex, subacute at base, densely 

 papillose, the coma whitish. Wet places; Hokkaido, Hon- 

 shu (centr. distr. and northw.). Sakhalin and s. Kuriles. 



The species occurs in Korea, Ussuri, Kamchatka, Alaska, 



and N. America. 



12. Epilobium shiroumense Matsum. & Nakai. Shiro- 

 uma-akabana. With rhizomes and small-leaved stolons; 

 stems often gregarious, 5-30 cm. long, usually simple, curved- 

 puberulent on the obscure ridges, glandular-puberulent on 

 upper part; leaves oblong or ovate-lanceolate, 12-30 mm. long, 

 3-11 mm. wide, subobtuse in the lower ones, subacute in the 

 upper ones, cuneate and obtuse at base, minutely and obsoletely 

 toothed, nearly glabrous, the petioles 1-4 mm. long; flowers 

 small, rose; calyx 3-3.5 mm. long, minutely mucronate; stig- 

 mas clavate, about Vz as long as the styles; capsules 2-5 cm. 

 long, glabrescent, the pedicels 15-30 mm. long, glandular- 

 puberulent; seeds oblong-oblanceolate, 1.2-1.4 mm. long, nar- 

 rowed at both ends, obtuse, acute at base, without papillae, the 

 coma white. July-Aug. Wet places in mountains; Hok- 

 kaido, Honshu (centr. distr.). 



13. Epilobium foucaudianum Lev. E. sertulatum sensu 

 auct. Japon., non Hausskn.; E. lucens Lev.; E. hornemannii 

 sensu auct. Japon., non Reichenb.; E. hornemannii var. 



joucaudianum (Lev.) Hara. Miyama-akabana. Plants 



with short rhizomes and small-leaved stolons; stems often 

 gregarious, 5-22 cm. long, usually simple, curved-puberulent 

 on the obscure ridges, glandular-puberulent on upper part; 

 median leaves thin, oblong-lanceolate to oblong-ovate or ovate, 

 10-40 mm. long, 3-15 mm. wide, obtuse or rounded at apex, 

 narrowed at base, often with obsolete short teeth, glandular- 

 puberulent, the petioles 1-5 mm. long; upper leaves acute, 

 rather prominently toothed; flowers 4-6 mm. long, rose, the 

 pedicels glandular; calyx 3-4.5 (-5) mm. long; stigmas clavate, 

 Vi as long or slightly shorter than the style; capsules 2-6 cm. 

 long, the pedicels 3-20 (-25) mm. long; seeds oblanceolate, 

 1.1-1.3 mm. long, slightly narrowed at apex, subacute at base, 



minutely papillose. July-Aug. High mountains; Hokkaido, 



Honshu (centr. distr. and northw.). Sakhalin. 



14. Epilobium dielsii Lev. E. na\aharanum Nakai 



Ashiboso-akabana. With short rhizomes and small-leaved 

 stolons; stems often gregarious, 3-10(-15) cm. long, curved- 

 puberulent on the ridges; median leaves lanceolate to ovate- 

 lanceolate, or oblong, 10-22 mm. long, 3.5-7 mm. wide, sub- 

 obtuse, obscurely serrulate, glabrous except the puberulent 

 midrib, the petioles 1-4 mm. long; upper leaves subobtuse; flow- 

 ers few, 4-5 mm. long, rose, the pedicels puberulent; ovary 

 glabrate or sometimes sparingly puberulent and glandular; 

 calyx 3-4 mm. long; stigmas clavate, shorter than the styles; 

 capsules 2.5-5 cm. long, the pedicels 22-35 mm. long, sparsely 

 curved-puberulent; seeds oblanceolate, 1-1.2 mm. long, mi- 

 nutely papillose. July-Aug. High mountains; Hokkaido, 



Honshu (centr. distr. and northw.). s. Kuriles. 



4. LUDWIGIA L. 



MiZU-YUKI-NO-SHITA ZoKU 



Herbs or subshrubs, often aquatic; leaves usually membranous, alternate, rarely opposite, entire, rarely toothed; flowers soli- 

 tary, usually axillary, sessile or pedicelled, 2-bracteolate on pedicels or on the lower part of ovary; calyx-mbe cylindrical or 

 obconical, scarcely extended beyond the ovary, the lobes 3-6, persistent or nearly so; petals 3-6 or absent; stamens usually 

 twice as many as the calyx-lobes; ovary 4- or 5-locular; styles simple, the stigmas 3- to 6-grooved or -lobed; ovules many, in many 

 series on the inner angle of the placentae; capsules linear to obovoid, terete, angled, or winged, at the apex with a disc and 



