Ranunculaceae 



459 



Var. sarmentosum Ohwi. /. ohiviantim Koidz. San'in- 



sHiRO-KANE-so. Plants sarmentose. Honshu (Japan Sea 



side, Echizen Prov. to Chugoku Distr.). 



7. Isopynim hakonense F. Maekawa & Tuyama. Ha- 

 KONE-SHiRO-KANE-so. Glabrous perennial; rhizomes branched, 

 short<reeping, loosely scaly; sterns 10-20 cm. long, rather 

 slender, the cauline leaves 1 pair, subsessile, the radical leaves 



long-petiolate, the terminal leaflets broadly ovate or broadly 

 rhombic-ovate, 1.5-2 cm. long, subobtuse, slightly narrower, 

 broadly cuneate to abrupdy narrowed below, 3-lobulate; 

 flowers few, 6-8 mm. across, white, not fully expanded; sepals 



about 4 mm. long; seeds smooth. May. Honshu (Izu and 



Sagami Prov.). 



16. TROLLIUS L. 



Ki: 



ZOKU 



Erect glabrous perennial herbs with thick short rhizomes; leaves radical and cauline, alternate, palmately divided to lobed; 

 flowers solitary or few, yellow, bisexual, erect, pedicelled; sepals 5 to rather numerous, petaloid, deciduous; petals 5-10, linear, 

 short-clawed and with a nectariferous pit at base; stamens many; carpels 3 to many, free, sessile; fruit of few to rather many 

 follicles; seeds many, usually angled, smooth. More than 10 species, in temperate and northern regions of the N. Hemi- 

 sphere. 



lA. Petals longer than the stamens 1. T. hondoensis 



IB. Petals shorter than to as long as the stamens. 



2A. Sepals 5-7, spreading; anthers usually 2.5-5 mm. long 2. T. riederianus 



2B. Sepals 10-16, ascending and connivent above; anthers usually 1.5-2 mm. long 3. T. pulcher 



1. TrolUus hondoensis Nakai. T. asiaticus var. lede- Var. japonicus (Miq.) Ohwi. T. japonicus Miq.; T. nishi- 



boiirii Maxim.; T. ledebotirii var. macropetalus sensu auct. dae Miyabe; T. patulus sensu auct. Japon., non Salisb. 



Japon., non Regel Kimbai-s6. Stems erect, few-leaved; Shinano-kimbai-so. Leaves more deeply cut; styles rather 



radical and lower cauline leaves long-petiolate, 6-12 cm. long slender, 2.4—4 mm. long. July-Aug. Alpine meadows; 



and as wide, 3-sected, die terminal segments rhombic-elliptic Hokkaido, Honshu (n. and centr. distr.). 



to rhombic-obovate, pinnately cleft on the upper half, ir- Trollius citrinus Miyabe, with lemon-colored flowers and 



regularly acute-toothed, the lateral segments 2- to 3-parted, spreading petals, is reported as growing with T. riederianus 



green above, paler beneath, firmly chartaceous; upper cauline var. japonicus in Hidaka Prov., Hokkaido. Possibly it is just a 



leaves sessile or short-petiolate, rather small; flowers 2.5-4 cm. variant, but its proper status can not now be determined with 



across; sepals elliptic, spreading; petals subacute or obtuse; certainty. 



anthers 3-5 mm. long; styles 2.5-3.5 mm. long. June- 3. Trollius pulcher Makino. Botan-kimbai-s6. Gla- 



Aug. Wet meadows in mountains especially along streams; brous rather stout perennial herb; stems 20-60 cm. long, 



Honshu (Uzen to Oomi Prov.). tufted, usually 3-leaved, 1- to 2-flowered; radical leaves long- 



2. Trollius riederianus Fisch. & Mey. T. patulus var. petiolate, reniform, to 12 cm. long, 19 cm. wide, 3-sected, the 

 brevistylus Regel; T. membranostylis sensu Miyabe, non Hult. segments cuneate, incised-toothed, the lateral segments broader, 



Chishima-kimeai-s6. Erect perennial herb with short deeply 2-parted, the terminal segment ellipdc, 3-cleft; cauline 



rhizomes; radical and lower cauline leaves long-petiolate, leaves gradually becoming smaller above, the petioles dilated 



cordate-orbicular, 4-12 cm. long and as wide, 3-sectcd, the below; flowers orange-yellow, hemispheric, 3-5.5 cm. across, 



segments obovate to rhombic-elliptic, the lateral divisions 2- erect; sepals many, concave, connivent above, imbricate, 



to 3-parted, pale and dull beneath, pinnately parted or cleft, orbicular, about 2.5 cm. long and as wide in the outer ones, 



incised and toodied; upper cauline leaves small, sessile; flowers narrower in inner ones, minutely toothed on upper margin, 



yellow, 3-4 cm. across; sepals 5-7, broadly elliptic; petals rounded; petals 5-7, 8.5-10 mm. long, shorter than the 



linear, rather thick, obtuse to rounded; anthers 2.5-5 mm. stamens, erect, linear-spathulate, obtuse, short-clawed, enure; 



long; style 1.5-2.5 mm. long. July-Aug. Alpine meadows; andiers short; carpels many; style erect, straight. Hok- 



Hokkaido. Kuriles, Sakhalin, and Kamchatka. kaido (Rishiri Isl.). 



17. ERANTHIS Salisb. Setsubun-s6 Zoku 



Small tuberous-rooted perennials; radical leaves palmately dissected, the involucral leaves sessile; flowers solitary and terminal, 

 short-pcduncled, yellow or white; sepals 5-8, petallike, deciduous; petals reduced to small 2- to 4-fid nectaries; stamens numerous; 

 carpels foUicular, few, free, short-stiped. ^Few species in the Old World. 



I. Eranthis pinnadfida Maxim. E. ke'sk." Fr. & Sav.; 

 Shibateranthis pinnati-fida (Maxim.) Satake & Okuyama; 5. 

 \eisl{ei (Fr. & Sav.) Nakai Setsubun-s6. Small peren- 

 nial herb 5-15 cm. high, nearly glabrous, die peduncle mi- 

 nutely puberulous; radical leaves long-petioled, reniform- 

 orbicular, 3-4 cm. wide, somewhat 5-angled in oudine, 

 3-parted, the lateral divisions deeply bifid, the lobes and cen- 



tral division rhombic-ovate, obtuse, pinnatifid; involucral 

 leaves sessile; flowers white, about 2 cm. across; sepals 5, 

 ovate, 10-15 mm. long; petals yellow, 2- to 4-fid, shorter than 

 the stamens; carpels 1-5, about 10 mm. long, glabrous, short- 

 stiped, the style about 2-3 mm. long; seeds brownish, rounded, 



smooth. Mar.-Apr. Woods in mountains; Honshu 



(Kanto and westw.) ; rather rare. 



