GUTTIFERAE 



631 



3B. Stems 5-20 cm. long, erect or decumbent, slender; leaves elliptic or broadly ovate, spreading; upper leaves ovate, Icaflike; sepals 



obtuse 3. H. laxum 



2B. Stems terete or with 2 striations; leaves usually large, 1.5-5 cm. long; perennial herbs with flowers 8-25 mm. across; stamens many, 

 the anthers with a black dot at tip. 



4A. Leaves connate at base, perfoliate; capsules with raised, rounded, pellucid glands, without striations 4. H. sampsonii 



4B. Leaves not connate at base; capsules densely pcllucid-striate. 



5A. Flowers rather small, about 1 cm. across; petals as long as to slightly longer than the often unequal sepals. 

 6A. Styles shorter than the ovary, if longer the sepals also longer, 5-6 mm. long. 



7A. Sepals 3-5.5 mm. long; petals 4-6 mm. long 5. H. pscudopctiolatum 



73. Sepals 5-8 mm. long; petals 7-10 mm. long 6. H. oliganthum 



6B. Styles longer than to as long as the ovary; sepals 3-'?.5 mm. long; petals 4-7 mm. long 7. H. kjnashiamim 



5B. Flowers rather large, (12-) 15-25 mm. across; petals at least twice as long as the sepals. 

 8A. Leaves linear to linear-oblong or oblanceolate, usually 3-5 mm. wide. 

 9A. Stems 10-30 cm. long, sparsely leafy; ovary with linear glands. 



1 OA. Styles 2-3 mm. long i. H. hakpnense 



I OB. Styles 3.5-5 mm. long 9. H. sikpk.umomanum 



9B. Stems 30-80 cm. long, very leafy with fascicles of leaves in the axils; ovary with linear and elliptic glands. 



10. H. perforatum var. angiistifoliiim 

 8B. Leaves elliptic, ovate to narrowly oblong, sometimes lanceolate, usually more than 5 mm. wide. 

 IIA. Stems with 2 longitudinal raised striations. 



12 A. Bracts leaf like 11. H. yezoense 



12B. Bracts linear 12. H. tosaense 



IIB. Stems terete. 



13A. St\les 3.5-4 mm. long; flowers 15-20 mm. across; hills and mountains 13. H. erectum 



13B. Styles 4.5-6 mm. long; flowers 15-25 mm. across; northern districts and alpine regions 14. H. /{amtschalicum 



1. Hypericum ascyron L. Roscyna japonica Bl. To- 3-8 mm. wide, rounded at apex, rounded to shallowly cordate 



MOE-s6. Glabrous perennial; stems erect, branched, 4-angled, at base, sessile, semiclasping, spreading, the uppermost ones 



50-80 cm. long; leaves lanceolate, 5-10 cm. long, 1-2 cm. wide, narrowly ovate, leaflike; flowers in cymes, 5-7 mm. across; 



acute, sessile and slighdy clasping, or abruptly narrowed and sepals oblong, 3-^ mm. long, obtuse; petals 2.5-3 mm. long, 3- 



sometimes subsagittate at base, endre, pellucid-dotted, penni- nerved, without dots; stamens 8-10; styles about 0.5 mm. long; 



ner\'ed; flowers few, terminal, yellow to reddish, 4-6 cm. capsules ovoid, 3 mm. long; seeds about 0.3 mm. long. 



across; sepals ovate, about 1 cm. long, obtuse to acute, many- June-Sept. Wet places in lowlands; Hokkaido (sw. distr.), 



nerved; petals broadly falcate-ovate, 2.5-3.5 cm. long, without Honshu, Shikoku, Kyushu; common. Korea and Ryukyus. 



black dots; anthers without black dots; styles including the 4. Hypericum sampsonii Hance. H. electrocarpum 



stigmas 6-8 mm. long, connate on lower half, the stigma Maxim. Tsuki-nuki-otogiri. Glabrous, erect perennial; 



punctate; capsules ovoid, 12-18 mm. long; seeds minutely stems terete, often branched in upper part, 50-80 cm. long; 



reticulate, slightly more than 1 mm. long, with a raised line leaves membranous, narrowly ovate-oblong, 5-8 cm. long, 



on one side. Juiy-Aug. Grassy places in mountains; Hok- 15-35 mm. wide, broadest at the base, obtuse, the leaf pairs 



kaido, Honshu.- — — e. Siberia, Korea, China, and N. America. connate at base, spreading, with pellucid and black dots; flow- 



Var. longistylum Maxim. H. sagittifoliiim Koidz. ers few, terminal, 7-8 mm. across, yellow, the bracts linear, 



KoRAi-ToMOE-so. Styles about 1 cm. long, 5-lobed on upper 1-2.5 mm. long; sepals oblong, 3-6 mm. long, obtuse; petals 



one-third. Mountains of Kyushu. Altai, Dahuria, Man- slightly longer than the sepals, broadly obovate, 5-6.5 mm. 



churia, Mongolia, and Korea. long; stamens many, slightly shorter than the petals, with a 



2. Hypericum japonicum Thunb. H. mutilum sensu black dot at apex of the anther; styles about 1.5 mm. long, the 

 auct. Japon., non L.; Sarothra japonica (Thunb.) Y. Kimura stigmas capitellate; capsules ovoid, about 6 mm. long, with 



HiME-OTOGiRi. Glabrous annual or perennial; stems raised pellucid linear glands; seeds about 1 mm. long, with 



20-50 cm. long, branched in upper part, 4-angled; leaves as- few longitudinal striations and minute cross-lines. July. 



cending to somewhat spreading, ovate to broadly so, 5-12(-15) Honshu, Shikoku, Kyushu; rare. From Formosa and China 



mm. long, 3-8 mm. wide, subobtuse, semiclasping at base, with to India. 



minute pellucid dots, those of the inflorescence narrow and 5. Hypericum pseudopetiolatum Keller. H. \iusi- 



bracdike; flowers 6-8 mm. across, the pedicels usually longer anum Koidz.; H. muraianiim Makino; H. I(psiense Koidz.; 



than the flowers; sepals 3-5 mm. long, broadly lanceolate; petals H. pentholodes Koidz. Sawa-otociri. Loosely tufted 



shorter than the sepals, few-nerved, without dots; styles 0.5-1 perennial; stems 10-40 cm. long, terete, slender, often 



mm. long; stigmas capitellate; capsules ovoid, shorter than the branched, usually ascending from base; leaves thin, rather soft, 



sepals, without glands; seeds oblong, about 0.3 mm. long, with narrowly oblong to oblanceolate, 2-4 cm. long, 6-12 mm. 



minute reticulations. June-Aug. Wet places in lowlands; wide, obtuse, narrowed to a petiolclike base, with pellucid 



Honshu (Kinki Distr. and wesrw.), Shikoku, Kyushu. and/or black dots, the upper leaves smaller; flowers about 10 



Ryukyus, Formosa, s. Korea, China, India, and Australia. mm. across; sepals narrowly oblong, 3.5-5.5 mm. long, obtuse, 



3. Hypericum laxum (Bl.) Koidz. H. yabei Lev. & slighdy unequal, often with raised black dots; petals 4-6 mm. 

 Van't.; H. dominii Lev.; H. thunbergii Fr. & Sav.; H. japon- long; styles 1-2 mm. long; capsules ovoid-ellipsoid or ovoid, 

 icum forma yabei (Lev. & Van't.) Makino; Sarothra laxa (Bl.) 5-6 mm. long; seeds about 0.8 mm. long, minutely reticulate. 



Y. Kimura; Brathys laxa Bl. Koke-otogiri. Delicate an- July-Aug. Wet places in mountains; Hokkaido (sw. 



nual or perennial; stems 5-20(-35) cm. long, much branched part), Honshu, Shikoku, Kyushu; rather common. 



in upper part, 4-angled; leaves elliptic or ovate, 5-10 mm. long. 



