886 



COMPOSITAE 



branched in upper part; median leaves lanceolate to ovate- 

 oblong, acuminate, narrowed to a short petiole or abruptly 

 narrowed and semiclasping, irregularly serrulate, glabrous or 

 with short crisped hairs on both sides; heads many, 17-25 mm. 

 across, in corynabs, short-pedicellate; involucres 6-7 mm. long 

 and as wide, caliculate at base, the bracriets linear, 2-8 mm. 

 long, the bracts 9-12, narrowly oblong, deltoid at apex; ligu- 

 late corollas about 5, yellow, 13-19 mm. long, 1.5-3.5 mm. 

 wide; achenes 3.5-4 mm. long, glabrous, the pappus 6-6.5 

 mm. long, whitish. Aug.-Sept. High mountains; Hok- 

 kaido, Honshu, Shikoku, Kyushu. Formosa, China, Korea, 



Sakhalin, s. Kuriles, Siberia to Europe. 



4. Senecio cannabifolius Less. S. palmatus Pall, ex 

 Ledeb.; S. palmatus var. genuinus Herd.; S. palmatus var. 

 davuricus Herd.; S. cannabifolius var. davuricus (Herd.) 



Kitag. Hangon-s6. Rhizomes creeping; stems erect, 1-2 



m. long, often reddish; lower and median cauline leaves petio- 

 late, 10-20 cm. long, 9-15 cm. wide, pinnately divided, more 

 or less crisped-puberulent beneath, the terminal segments 

 lanceolate, acuminate, incurved-serrulate, the lateral segments 

 of 1 or 2 pairs, ascending, the pedoles auriculate at base, the 

 upper leaves 3-parted to -cleft, petiolate, gradually smaller, 

 simpler, and lanceolate in the uppermost ones; heads many, 

 about 2 cm. across, in large corymbs, the pedicels slender; 

 involucres tubular, 5-6 mm. long and as wide, caliculate, the 

 bractlets linear, 2-3 mm. long, few, the bracts lanceolate, acute; 

 ligulate florets 5-7, the corollas yellow, 12-13 mm. long, 1.5-2 

 mm. wide; achenes about 3 mm. long, glabrous, the pappus 



twice as long as the achenes, yellowish white. July-Sept. 



Mountains; Hokkaido, Honshu (centr. and n. distr.); rather 

 common. Sakhalin, Kuriles, Kamchatka, Korea, Man- 

 churia, to e. Siberia, n. China, and Aleutians. 



Var. integrifolius (Koidz.) Kitam. S. palmatus var. in- 



tegrif alius Koidz.; S. otophorus Maxim. ^Mimi-kion, Hito- 



TsoBA-HANGON-s6. Leaves undivided, simple. Hokkaido, 



Honshu. Manchuria. 



5. Senecio argunensis Turcz. S. jacobaea var. grandi- 



■florus Turcz. ex DC. ^Koringiku. Rhizomes woody; 



stems erect, single or tufted, 65-100 cm. long, cobwebby-hairy, 

 branched in upper part; median leaves ovate-oblong to oblong, 

 8-10 cm. long, 4-6 cm. wide, pinnately parted to cleft, the lobes 

 about 6 pairs, ascending, narrow, incised, acute to obtuse, with 

 a broad sinus between tlie lobes, sessile, deep green and gla- 

 brous above, loosely cobwebby-hairy, with raised nerves be- 

 neath, the upper leaves gradually smaller, pinnately lobed; 

 heads many, 2-2.5 cm. across, in corymbs; involucres subglo- 

 bose, about 6 mm. long, 10 mm. wide, caliculate, the bractlets 

 many, 3-5 mm. long, acuminate, the bracts oblong; ligulate 

 corollas deep yellow, about 15 mm. long, about 3 mm. wide; 

 achenes 2-3 mm. long, glabrous, the pappus about 5.5 mm. 



long, whitish. Aug.-Oct. Mountains; Kyushu (n. distr.); 



rare. ^Korea, China, Manchuria, and Dahuria. 



6. Senecio pseudoarnica Less. Arnica maritima (L.) 



Koidz., non L. f. Ezo-oguruma. Fleshy perennial herb 



with thick rhizomes; stems 30-50 cm. long, stout, usually 

 simple, cobwebby-hairy, densely leafy; radical and lower cau- 

 line leaves smaller than the median ones, the median oblong 

 or ovate-oblong, 12-15 cm. long, 4.5-5.5 cm. wide, obtuse, 

 slightly narrowed at base and semiclasping, mucronate-toothed, 

 cobwebby-hairy beneath, the uppermost ones slightly smaller, 

 obtuse to acuminate; heads 1-30, 3.5-4.5 cm. across, in pedun- 

 culate corymbs; involucres subglobose, 1-1.2 cm. long, with 



many bracteal leaves 2-2.5 cm. long, the bracts narrowly 

 oblong, acuminate; ligulate corollas yellow, 17-24 mm. long, 

 3-5 mm. wide; achenes grayish, about 5 mm. long, glabrous, 



the pappus about 1 cm. long, whitish, brownish at base. 



July-Sept. Near seashores; Hokkaido, Honshu (Mutsu 



Prov.). Korea, Manchuria, Amur, Ussuri, Kamchatka, and 



N. America. 



7. Senecio nikoensis Miq. Sawagiku, Borogiku. Plant 

 stoloniferous, rhizomes short; stems erect, 40-100 cm. long, 

 white-pubescent, often branched in upper part; median and 

 lower cauline leaves thinly membranous, ovate-oblong, 5.5-14 

 cm. long, 2.5-8.5 cm. wide, soft-pubescent on both surfaces, 

 deeply pinnatifid to pinnatiparted, pedolate, the segments 

 spreading, 4-6 pairs, linear-oblong, toothed or incised; heads 

 nearly umbellate, about 12 mm. across, on slender bractless 

 pedicels; involucres about 5 mm. long, 7 mm. across, the bracts 

 narrowly oblong, acute; ligulate corollas pale yellow, about 8 

 mm. long, 1 mm. wide; achenes about 1.5 mm. long, short- 

 pilose; pappus snow-white, 6-7 mm. long. June-Aug. 



Damp woods in mountains; Hokkaido, Honshu, Shikoku, 

 Kyushu. 



8. Senecio takedanus Kitam. S. flammeus var. alpina 

 Takeda Takene-k6rin-ka. Rhizomes short; stems sim- 

 ple, 20-40 cm. long, cobwebby and sometimes short-pubescent; 

 lower and median cauline leaves spathulate-oblong, 5-10 cm. 

 long, 1.5-3 cm. wide, obtuse, clasping at base, irregularly 

 mucronate-toothed, cobwebby-hairy and often with short 

 crisped hairs, the uppermost leaves gradually smaller, nar- 

 rower, broadly clasping at base; heads usually 4-5, in umbels, 

 2-2.5 cm. across, the pedicels purplish puberulent, thickened 

 at top, with small purplish linear bractlets; involucres cup- 

 shaped, 7-10 mm. long, 1-1.6 cm. wide, dark purplish; ligulate 

 corollas dark orange-red, about 1 cm. long, 2 mm. wide; 

 achenes about 4 mm. long, hairy; pappus 6-7 mm. long, whit- 

 ish. Aug. Alpine slopes; Honshu (centr. distr.) ; rare. 



9. Senecio flammeus Turcz. ex DC. S. longeligulatus 



Lev. & Van't. Takene-koringiku. Rhizomes slender, 



short; stems simple, 15-40 cm. long, cobwebby and puberulent; 

 radical leaves withering before anthesis, oblong, cuneately nar- 

 rowed at base, long-petiolate, the lower cauline leaves oblanceo- 

 late-oblong, 8-9 cm. long, 2.3-2.5 cm. wide, obtuse, narrowed 

 to a winged semiclasping slightly decurrent petiole, irregularly 

 mucronate-toothed in upper half, puberulent and cobwebby on 

 both sides, the median leaves oblong, the upper ovate-lanceo- 

 late, gradually much reduced; heads 2-7, in false umbels, 3-3.2 

 cm. across, the pedicels with few bractlets; involucres cup- 

 shaped, about 5 mm. long, 12 mm. across, dark purplish at 

 tip, the bracts lanceolate, acute; ligulate corollas dark orange- 

 red, incurved on margin, reflexed at anthesis, 13-22 mm. long, 

 about 1.5 mm. wide; achenes 2.5-3 mm. long, hairy, the pappus 



whitish, about 5.5 mm. long. Aug. Mountains; Kyushu 



(n. distr.). ^Korea, Manchuria, n. China, and Dahuria. 



Var. glabrifolius Cufodontis. S. flammeus sensu auct. 

 Japon., non Turcz.; S. flammeus subsp. glabrifolius (Cufodon- 

 tis) Kitam.; S. flammeus forma glabrescens Hara Korin- 



KA. Stems 30-60 cm. long; heads 3-13; involucres 5-8 mm. 

 long; achenes about 3 mm. long, densely hairy, the pappus 



6.5-8 mm. long. July-Get. Sunny places in mountains; 



Honshu. Korea. 



10. Senecio kawakamii Makino. Miyama-oguruma. 

 Rhizomes short-decumbent; stems 17-30 cm. long, erect, sub- 

 scapose, short-pubescent and cobwebby; lower leaves rosulate, 



