(First upload on August 3 2011. Last on July 16 2021) [ 日本語 | English ]

Cerastium fontanum Baumg.

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

Cerastium L. (ミミナグサ)

C. fontanum (ミミナグサ, s.l.), common mouse-ear
ssp. vulgare (Hartm.) Greuter et Burdet (オオミミナグサ, s.l.)

var. angustifolium (Franch.) H. Hara (ミミナグサ, 耳菜草)
Lifeform: perennial forb < 30 cm high
Stem/leaf: hairy stem and leaf
Distribution: India - China - Korea - Japan
Habitat: widespread in rural - urbanized areas
Peduncle: longer than calyx ↔ C. glomeratum
Sepal: 4-5 mm long


C. ianthes F. N. Williams
C. caespitosum Gilib. var. glandulosum auct. non Wirtgen
C. caespitosum Gilib. var. ianthes (F. N. Williams) H. Hara
C. holosteoides Fr. var. angustifolium (Franch.) M. Mizush.
C. holosteoides Fr. var. hallaisanense (Nakai) M. Mizush.
C. vulgatum L. var. hallaisanense Nakai

var. vulgare (Hartm.) M. B. Wyse Jacks. (オオミミナグサ, s.s.)
Distribution: north to northern Tohoku District
Sepal: 5-6.5 mm long


Cerastium fontanum in Hokkaido

chickweed1 chickweed2 chickweed3
chickweed4 chickweed5 chickweed6
[1] along Hokudai Street at N15/W4 on June 6 2011. [2] along a paved road in N27/E2, East Ward, Sapporo, on May 15 2021. [3/4} at an arable land near Kyushu University Experimental Forest at Ashoro, eastern Hokkaido, on June 5 2014. [5] at a riverside for field training on integrated environmetns near Usujiri, southern Hokkaido, on June 16 2015. [6] close to a fumarole in the Kompira Craters of Mount Usu on May 26 2021. Records: along Horonai River in Tomakomai Experimental Forest (TOEF), central Hokkaido, on June 10 2022.