Umbelliferae 



677 



1. Sium suave Walt. var. nipponicum (Maxim.) Hara. 



S. nipponicum Maxim. Saw.azeri, Nunuzeri. Rhizomes 



short-creeping, with thick spongy white roots; stems 60-100 

 cm. long, branched above, glabrous; radical and lower cauline 

 leaves long-petiolate, 20-^0 cm. long, simply pinnate, the leaf- 

 lets 7-9 (rarely 11), sessile except the terminal one, narrowly 

 ovate, sometimes broadly lanceolate, 3-10 cm. long, 1-3 cm. 

 wide, acuminate, rarely obtuse, acutely dentate, the upper cau- 

 line leaves with fewer and smaller, narrower, lanceolate leaf- 

 lets; umbels glabrous, the rays 7-12, the bracts and bractlets 

 broadly linear, defle.xed, 2-6 mm. long, the pedicels 10-20, 3-7 

 mm. long; fruit obovoid, 2.5-3 mm. long, the calyx-teeth del- 

 toid, minute, the styles short, slender. July-Sept. Hok- 

 kaido, Honshu, Shikoku, Kyushu. 



Var. ovatum (Yatabe) Hara. S. ovattim Yatabe Hiro- 



h.\-numaZeri. Leaflets ovate. 



Var. suave S. cictitaefolium Schrank; S. lineare Michx.; 

 Apiiim cicutaejolium (Schrank) Benth. & Hook. f. ex Forbes 



& Hemsl. To-NUMAZERi, Hosoba-numazeri. Leaflets 7- 



17, narrow, 5-15 cm. long, linear to lanceolate; calyx-teeth 



obsolete. Hokkaido, Honshu. Korea, China, Siberia to 



e. Europe and N. America. 



2. Sium sisarum L. S. ninsi L. ^Mukago-ninjin. 



Rhizomes short, with thickened, whitish, spongy roots; stems 

 30-80 cm. long, flexuous and branched above; lower cauline 

 leaves petiolate, 5- or sometimes 3-foliolate, the leaflets sessile 



or nearly so, lanceolate to linear, rarely narrowly oblong, 2-5 

 cm. long, 5-10 mm. wide, obtuse to acute, with short-awned, 

 acute teeth, scaberulous on the margin, the upper leaves 

 smaller and usually 3-foliolate, with small purplish bulbils in 

 the axils; bracts and bractlets lanceolate, scarious-margined, 

 2-4 mm. long, the rays about 10, about 2 cm. long, the pedi- 

 cels 10-20, 3-5 mm. long; fruit ovoid-globose, about 2 mm. 

 long, the calyx-teeth minute, the stylopodium thick, the styles 



about 0.5 mm. long, nearly appressed to the fruit. Aug.- 



Sept., fruiting Oct. Hokkaido, Honshu, Shikoku, Kyushu. 



Korea and China. 



3. Sium serra (Fr. & Sav.) Kitag. Pimpinella serra Fr. 

 & Sav. Tani-mitsuba. Glabrous perennial with thick- 

 ened, spongy, white, fusiform roots; stems erect, branched 

 above, 60-80 cm. long; cauline leaves petiolate, ternately 3- 

 foliolate or pinnately 5-foliolate, the leaflets sessile, subequal, 

 ovate to broadly lanceolate, thinly membranous, long-acumi- 

 nate, minutely serrulate, the upper leaves small, short-peti- 

 olate; umbels few, delicate, the involucral-bracts solitary, fili- 

 form or none, the rays 2-5, very slender, 1-2 cm. long, the 

 involucel bractlets few, filiform, 1-2 mm. long, the pedicels 

 2-7 (rarely -10), 7-10 mm. long, very slender; fruit ovoid, 

 about 2 mm. long, glabrous, the calyx-teeth minute, the styles 

 about 0.5 mm. long, slender and spreading. Aug. Hok- 

 kaido, Honshu (centr. and n. distr.). 



20. APODICARPUM Makino Ekisaizeri Zoku 



Small, glabrous perennial, of wet places; leaves simply pinnate; umbels compound, the bracts and bractlets few, small; calyx- 

 teeth lacking; petals white, ovate-orbicular, acute, slightly incurved at apex; styles very short; stylopodium small, flat; fruit 

 ellipsoidal, compressed laterally, with a groove on each side of the commissure, the carpels connate, suborbicular in cross section, 

 the ribs rather thick, obtuse, equal, the vittae solitary in the intervals, 2 in the commissure, the carpophore lacking; seeds 5- 

 angled, suborbicular in cross section, slighdy inflated on the ventral side. A single species, in Japan. 



1. Apodicarpum ikenoi Makino. Apium il^enoi (Ma- 

 kino) Drude Ekisaizeri. Perennial, with short rhi- 

 zomes; stems erect, sparsely branched, 5-20 cm. long; radical 

 and lower cauline leaves petiolate, simply pinnate, ovate-ob- 

 long in outline, 4-7 cm. long, the leaflets sessile except the 

 terminal one, equal, 7-9, narrowly to broadly ovate, 1-2 cm. 

 long, 7-15 mm. wide, acute to subobtuse, irregularly dentate, 

 the upper leaves 3- to 5-foliolate, smaller, sessile; umbels few, 

 long-pedunculate, die lower ones opposite the leaves, the in- 



volucral bracts few, linear-lanceolate, 3-8 mm. long, rather 

 unequal, the involucel bractlets few, linear, 2-4 mm. long, 

 spreading, the rays 3-5, unequal, glabrous, about 3 cm. long, 

 the pedicels rather stout, unequal, 2-5 mm. long; fruit ellip- 

 soidal or obovoid-ellipsoidal, 2.5-3 mm. long, the styles very 



slender, nearly erect. May, fruidng through June. Wet 



muddy places along rivers in the lowlands; Honshu (Musashi 

 and Owari Prov.) ; rare. 



21. GLEHNIA F. Schmidt Hama-bofu Zoku 



Pubescent perennials with thick, elongate rhizomes; leaves twice ternately pinnate with elliptic, dentate, often 3-lobed leaflets; 

 imibels few, terminal and from the upper axils, densely pubescent, without an involucre, the bracts of the involucels few, linear; 

 calyx-teeth evident, linear-deltoid, acute, 1-nerved; petals white, obovate, emarginate, with an incurved tip; styles elongate; 

 stylopodium disc-shaped, prominent, convex; fruit ellipsoidal, densely pubescent, nearly orbicular in cross section, the carpels 

 with thick, rather winglike prominent ribs, the lateral ribs slighdy broader than the dorsal, the vittae numerous, the carpo- 

 phore bifid, the pericarp corky; seeds semi-orbicular in cross section, with a plane face. One species, in e. Asia and 



w. N. America. 



1. Clehnia littoralis F. Schmidt. Phelloptcrus littoralis 

 Benth. & Hook. f. Hama-bofu. Plant densely long white- 

 pubescent; rhizomes often elongate, rather thick; stems short, 

 usually simple, 5-30 cm. long, few-leaved; radical and lower 

 cauline leaves long-periolate, spreading, usually deltoid or 

 ovate deltoid, 10-20 cm. long, once or twice pinnately ternate, 

 the leaflets often 3-lobed, rather thick, elliptic, obovate-elliptic 

 or ovate -orbicular, 2-5 cm. long, 1-3 cm. wide, obtuse to 

 rounded at apex, often partly suffused with red, often gla- 

 brous except on the nerves, irregularly denticulate, often cal- 



lose on the margin; umbels 1, sometimes to 3, densely long 

 white-villous, the rays more than 10, 4-6 cm. long, spreading, 

 crowded, the umbellets densely 20- to 40-flowered, the bracts 

 of the involucel linear, not exceeding the flowers; calyx-teeth 

 0.5-1 mm. long; styles 1.5-2 mm. long; fruit about 4 mm. 



long, villous. June-July. Sandy beaches along the sea; 



Hokkaido, Honshu, Shikoku, Kyushu; common. s. Ku- 



riles, Sakhalin, Ussuri, Ochotsk Sea region, Manchuria, China, 

 Korea, Ryukyus, Formosa, and the Pacific Coast of N. Amer- 

 ica. 



