(First upload on December 29 2015. Last on November 14 2023) [ 日本語 | English ]

Juncus wallichianus Laharpe

Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Juncus L. (イグサ)
Harikougaizekisyou (ハリコウガイゼキショウ, 針笄石菖), Wallich rush
Lifeform: perennial rush
Distribution: widespread in Asia and Oceania
Habitat: wetlands, including artificially-constructed wetlands (e.g., ditches)
Stem: cylindrical without wing ↔ flat with wing = J. prismatocarpus

Juncus koidzumii Satake


Juncus wallichianus in Hokkaido

Seeds1 Seeds2 Seeds3
Seeds4 Seeds5 Seeds6
[1/2] along a walkboard to go Mokeuni Pond, Sarufutsu Village, northern Hokkaido, on August 27 2015. [3-6] along Atsuma Coast (浜厚真), central Hokkaido. [3/4] on October 1 2022. [5/6] near a pond on August 5 2023.