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(First upload on December 15 2012. Last on August 10 2022) [ 日本語 | English ]

Galium L. (ヤエムグラ) G. trifidum L. Hosobanoyotsubamugura (ホソバノヨツバムグラ, 細葉ノ四葉葎, s.l.), threepetal bedstraw Lifeform: perennial forb < 40 cm tall Distribution: China - Russia - Korea - Japan - USA - Canada

Habitat: wetlands (湿原), and the margins Chromosome number: 2n = 24, or 48 Synonyms: Galium trifidum L. var. brevipedunculatum Regel Galium baicalense Poped. ssp. columbianum (Rydb.) Hultén (ホソバノヨツバムグラ, s.s.) ssp. trifidum (イトヨツバムグラ), the type, in boreal regions (not reported from Japan)

Galium trifidum in Hokkaido

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ssp. columbianum

1 2 3
4 5 6
7 8
[1-3] in Abira wetland, central Hokkaido, on July 16 2012. [4/5] near Akanuma Pond on Kushiro Wetland, eastern Hokkaido, on June 28 2015. [6-8] close to a pond along Atsuma Coast (浜厚真), central Hokkaido. [6] on June 16 2020. [7/8] on August 2 2022.