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(Upload on March 1 2023) [ 日本語 | English ]

Cyperus L. (カヤツリグサ) Tamagayatsuri (タマガヤツリ, 珠/玉蚊帳吊), smallflower umbrella sedge, small-flowered nutsedge or variable sedge Lifeform: weedy, annual sedge, sometimes behaving as a perennial Distribution: widespread in the Old World Habitat: wetlands, including paddy fields

Fruit: achenes (0.6-0.8 mm × 0.3-0.4 mm) Chromosome number: 2n = 18, 28, 32, 34 or 36 Synonyms, discarded varieties: - var. breviglobosus Kük. - var. subdecompositus Kük. - f. humilis Debeaux - f. maximus C. B. Clarke

Cyperus difformis in Hokkaido

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1 2 3
[1-3] along Atsuma Coast (浜厚真), central Hokkaido, on October 1 2022.