Northeastern Asian Flora
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Ixeris polycephala Cass.   (redirected from: Lactuca polycephala (Cass.) Benth.)
Family: Asteraceae
[Crepis bonii Gagnep., moreIxeris dissecta (Makino) C.Shih, Ixeris matsumurae (Makino) Nakai, Ixeris polycephala f. dissecta (Makino) Ohwi, Ixeris polycephala var. dissecta (Makino) Nakai, Lactuca biauriculata H.L?. & Vaniot, Lactuca matsumurae Makino, Lactuca matsumurae var. dissecta Makino, Lactuca polycephala (Cass.) Benth.]
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  • Japan Flora
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Japan Flora: Glaucous biennial; stems 15-40 cm. long, erect, often branched at base; radical leaves linear-lanceolate, 10-25 cm. long, 7-15 mm. wide, acuminate, narrowed to a pctiolelike base, entire; cauline leaves few, 7-15 cm. long, sessile, sagittate; inflorescence umbelliform; heads about 8 mm. across, pedi- cellcd, yellow, nodding at maturity; involucres 7-8 mm. long in fruit, the inner bracts 8-9, narrowly lanceolate; achenes fusiform, obtuse at base, 3-3.5 mm. long, deeply sulcate, acutely winged, the beak about 1.5 mm. long; pappus snow- white, about 5 mm. long. May. Wet places around paddy fields.

Honshu, Shikoku, Kyushu; common. Ryukyus, For­mosa, Korea, China, India to the Caucasus.

f. dissecta (Makino) Ohwi. Leaves pinnately dissected.

Ixeris polycephala
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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