Big brother fern

(First upload on September 18 2015. Last on August 15 2022) [ 日本語 | English ]

Deparia pycnosora (Christ) M. Kato

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

HOME > Plant list (植物リスト) > Fern (シダ類) > Woodsiaceae (イワデンダ科) > Deparia pycnosora

Deparia Hook. et Grev. (オオシケシダ)

Miyamashikeshida (ミヤマシケシダ, 深山湿気羊歯), big brother fern
Lifeform: summergreen perennial fern, turfed with ≈ 1 m in diameter
Distribution: Asia between Himalayas and eastern Sibera, including Japan
Habitat: mesic forest floors
Rhizome: erect
Chromosome number: n = 80
Synonyms:

Lunathyrium pycnosorum (Christ) Koidz.
Athyrium pycnosorum Christ, used when Athyriumis established

Bastard group

D. pycnosora (Christ) M. Kato (formerly)

var. pycnosora ⇒ D. pycnosora (Christ) M. Kato (ミヤマシケシダ), long stalk, no gland hair on the back of leaf
var. albosquamata M. Kato ⇒ D. jiulungensis (Ching) Z. R.Wang var. albosquamata (M. Kato) Z. R. Wang (ハクモウイノデ), sticky at the base
var. mucilagina M. Kato, a few thin scales at the base ⇒ D. mucilagina (M. Kato) Nakaike (ウスゲミヤマシケシダ)

Deparia pycnosora in Hokkaido

1 2
4 5 6
[1/2] on the southwestern slope of Mount Koma (駒ヶ岳 ⇒ flora), southern Japan, on August 4 2015. Also recorded on July 10 2017. [4-6] at a margin of pond biside a building in ToEF on September 14 2017.