(First upload on April 13 2012. Last on April 8 2014) [ 日本語 | English ]

Diplopterygium glaucum (Houtt.) Nakai

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

Gleicheniaceae (R. Br.) C. Presl

Two genera in Japan
Diplopterygium (Diels) Nakai
In Japan
D. blotianum (C. Chr.) Nakai (オオウラジロ)
D. chinense (Rosenst.) DeVol (タイワンウラジロ)
D. glaucum (Houtt.) Nakai (ウラジロ)
D. laevissimum (H. Christ) Nakai (カネコシダ)
Dicranopteris Bernh.

Diplopterygium glaucum (Houtt.) Nakai
Urajiro (ウラジロ, 裏白)
Lifeform: perennial fern (< 2 m high in Japan)
Distribution: Asia, including southern Japan (not in Hokkaido)
Habitat: sunny forests

→ increased with deforestation (as well as Sasa (ササ) in Hokkaido

Use: decoration for celebrating New Year

Hicriopteris glauca (Houtt.) Ching
Gleichenia japonica Spreng., formerly, often used
Polypodium glaucum Thunb. ex Houtt. (basionym)


Diplopterygium glaucum in Japan

ST1 ST2 ST3 [1/2] at Tokai Natural Trail clsoe to Nagara Park and Nagara Shrine, Otsu City, Shiga Prefecture, eastern Japan, on March 19 2012. [3] on Mount Misen (弥山, 535 m elevation), Hiroshima Prefecture, on March 16 2014.