Ixeris japonica
Ixeris japonica (Burm.f.) Nakai
Ixeris japonica is a perennial herb in the Asteraceae family, native to regions in East Asia including China, Japan, Korea, and Vietnam. It was first described in 1926. This plant grows to a height of 10-30 cm, with procumbent flowering stems and rosette leaves that are oblong or narrowly ovate, measuring 4.0-20.0 cm in length and 0.5-2.0 cm in width. The leaves are either entire or dentate, with a petiole-like base and a glabrous, yellowish green surface. The plant produces 1-5 flower heads, each containing 20-24 yellow ligulate flowers. The achenes are approximately 4.0 mm long, with 10 ribs and a 2.5 mm long filiform beak, and are accompanied by a 7.0 mm long white pappus.
Description
Ixeris japonica is a member of the Asteraceae family and is found in a wide range of East Asian regions, including China, Japan, Korea, and Vietnam. It is a perennial herb that typically reaches a height of 10-30 cm. The plant has procumbent flowering stems and rosette leaves that are oblong or narrowly ovate in shape, with a length of 4.0-20.0 cm and a width of 0.5-2.0 cm. The leaves are either entire or dentate, with a petiole-like base and a glabrous, yellowish green surface. The synflorescence consists of 1-5 flower heads, each containing 20-24 yellow ligulate flowers. The outer involucral bracts are 0.5-1.5 mm long, while the inner ones are 12.0-14.0 mm long. The achenes are approximately 4.0 mm long, with 10 ribs and a 2.5 mm long filiform beak, and are accompanied by a 7.0 mm long white pappus.
Distribution
Fujian · Nansei-shoto · Liaoning · Anhui · Honshu · Shikoku · North Korea · Hokkaido · Guangdong · South Korea · Zhejiang · Kyushu · Henan · China Southeast · Japan · Korea · Manchuria · Ogasawara-shoto · Taiwan · Vietnam
Synonyms
Ixeris dentata f. leucanthaYoungia debilisBarkhausia repensIxeris japonica f. integraLactuca trifidaPrenanthes debilisPicris repensIxeris japonica f. japonicaLactuca debilis f. debilisIxeris japonica var. japonicaIxeris japonica subsp. japonicaLactuca debilis var. debilisIxeris japonica var. salsuginosaIxeris japonica var. litoralisChondrilla debilisIxeris japonica subsp. salsuginosaIxeris japonica subsp. trifidaIxeris japonica subsp. litoralisIxeris debilis subsp. litoralisLactuca debilis var. integraIxeris japonica f. dissectaIxeris japonica f. sinuataLapsana japonicaIxeris debilis f. sinuataIxeris debilis subsp. liukiuensisLactuca debilis var. lyratopinnatifida
