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(Upload on January 19 2021) [ 日本語 | English ]

Arthraxon P. Beauv. (コブナグサ) Kobunagusa (コブナグサ, 子鮒草), small carpetgrass or jointhead Lifeform: annual grass Distribution: China - Korea - Japan - southeastern Asia - Australia Habitat: mosit cultivated lands, such as paddy fields Chromosome number: 2n = 10, 18 or 36

Synonyms: Arthraxon hispidus (Thunb.) Makino var. muticus (Honda) Ohwi Arthraxon pauciflorus Honda f. brevisetus (Regel) Ohwi (アイダコブナグサ) f. centrasiaticus (Griseb.) Ohwi (オオコブナグサ) f. hispidissimus (Honda) Ohwi (アソコブナグサ) f. japonicus (Regel) Ohwi (ホンコブナグサ)

Arthraxon hispidus in Hokkaido

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[1-3] in Niyama Highland skislope, Nanae Town, southern Hokkaido, on September 9 2020.