(First upload on October 22 2016. Last on October 2 2023) [ 日本語 | English ]

Carex parciflora Boott

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

Carex L. (スゲ)
Section Laxiflorae (Depauperatae, タマツリスゲ)
C. parciflora Boott (グレーンスゲ, s.l.)
Life form: perennial sedge
var. parciflora (グレーンスゲ), the type
Distribution: Sakhalin - Japan (Japan Sea side of Honshu, Hokkaido) - Kuril
Habitat: mesic forests and grasslands
Chromosome number: 2n = 38-40, 42, 44, 46, or 48

Carex jackiana Boott ssp. parciflora (Boott) Kük.

var. macroglossa (Franch. et Sav.) Ohwi
Kojuzusuge (コジュズスゲ, 小数珠菅), carpet sedge
Distribution: Korea - Japan (Honshu - Hokkaido)
Habitat: mesic forests

Carex jackiana Boott ssp. macroglossa (Franch. et Sav.) T. Koyama
Carex jackiana Boott ssp. parciflora (Boott) Kuk. var. macroglossa (Franch. et Sav.) Kuk. ex Matsum.
Carex macroglossa Franch. et Sav., often used
f. subsessilis (Ohwi) Ohwi (ムギスゲ)

var. tsukudensis T. Koyama (ヒロハノコジュズスゲ)
var. vaniotii (H. Lév.) Ohwi (ナガボノコジュズスゲ)

Carex parciflora in Hokkaido

var. parciflora (グレーンスゲ)

Carex1 Carex2 Carex3
[1] in West Tomioka Park (富丘西公園), Sapporo, on May 21 2022. [2/3] along a forest road in Shimokawa Town, northern Hokkaido, on May 27 2016.

var. macroglossa (Franch. et Sav.) Ohwi (コジュズスゲ)

Carex1 Carex2 Carex3
Carex4 Carex5
[1/2] at the western slope of Mount Yotei (羊蹄山), central Hokkaido, on June 28 2014. [3] close to Oi Pier Seaside Park, Tokyo, on June 3 2016. [4/5] on Mount Okobachi (於古発山), where the Otaru-Yoichi wind farm was planned, observed on June 15 2023.