(Upload on May 23 2015) [ 日本語 | English ]

Thelypteris acuminata (Houtt.) C. V. Morton

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

Thelypteris Schmidel (ヒメシダ)
Hoshida (ホシダ, 穂羊歯)
Lifeform: summergreen fern
Distribution: eastern Asia, including south to the Hokuriku District of Japan
Habitat: weedy in various disturbed habitats, such as secondary forests, forest roads and cropfields
Terminal pinna: clearly separated ↔ T. parasitica: becoming gradually short, and un-develped or unclearly-developed
Chromosome number: n = 36

Thelypteris acuminata (Houtt.) C. V. Morton f. cristata (Tagawa) Tagawa ex K.Iwats., nom. nud.
Cyclosorus acuminatus (Houtt.) Nakai ex H. Ito Christella acuminata (Houtt.) H. Lev.

var. kuliangensis (Ching) K. Iwats. (イヌホシダ), small and dense foliage
var. ogatana (Koidz.) K. Iwats. (イヨホシダ), reported from Aichi and Ehime Prefecture
f. nagurae (Shimura) Shimura ex K.Iwats., nom. nud. (クリンホシダ)
cv. yamawakii (チリメンホシダ)

Thelypteris acuminata in Japan

[1-3] on Shiroyama nature road in Kagoshima City, southern Kyushu, on March 20 2015.