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(First upload on November 12 2008. Last on July 15 2019) [ 日本語 | English ]

Picris hieracioides L. ssp. japonica (Thunb.) Krylov






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

Picris L. (コウゾリナ)
P. hieracioides L.
ssp. hieracioides (セイヨウコウゾリナ), the type
ssp. japonica (Thunb.) Krylov
Kouzorina (コウゾリナ, 剃刀菜/顔剃菜), Japanese hawkweed oxtongue
Lifeform: perennial forb
Distribution: temperate Asia (Mongolia - Siberia - China - Korea - Japan - Sakhalin)

flora on Mount Koma and Mount Usu

Habitat: grasslands and shrubs, often establishing after disturbances
Seed dispersal: wind
Chromosome number: 2n = 10
Synonyms: P. hieracioides var. glabrescens (Regel) Ohwi, nom. inval., P. hieracioides var. japonica (Thunb.) Regel ex Herder, P. japonica Thunb. (basionym)

var. akaishiensis Kitam. (アカイシコウゾリナ): South Alps of Japan
var. jessoensis (Tatew.) Kitam. (ホソバコウゾリナ), serpentine type
var. koreana (Kitam.) Kitam. (チョウセンコウゾリナ)
var. mayebarae (Kitam.) Ohwi (ヒゴコウゾリナ)
f. laevicaulis M. Mizush. ex T. Shimizu (ナメラコウゾリナ)
f. maritima Sugim. (ハマコウゾリナ): coastal type in Kanto District, flower φ = 2 cm

ssp. kaimaensis (Kitam.) Kitam. (カイマコウゾリナ)
ssp. kamtschatica (Ledeb.) Hultén (カンチコウゾリナ, syn. var. kamtschatica (Ledeb.) Hultén): ≈ 30 cm in height, much bristly hair, involucre = 12-17 mm in diameter
  • Kitamura S. 1973. Picris hieracioides L. subsp. japonica Krylov var. litoralis Kitamura var. nov. Acta Phytotax. Geobot. 25: 188-189
索引

Picris hieracioides in Hokkaido


ST1 ST2 ST3 ST4
ST5 ST6 ST7
[1] near the 4th crater of Mount Usu (flora) on August 21 1987. The background is the slope of Mount O-Usu. [2/3] on the crater basin on September 19 2008 when the defoliation began but the flowering kept going. [4] near the parking lot of Mount Koma (flora), southern Hokkaido, on August 4 2015. [5-7] at a former guardhouse for watching herring (Nishin-banya) in Obira Town on May 27 2019. Records: along Zenibako Coast (銭函海岸), Otaru City, where a wind farm has been established, on July 31 2020. Near a parking lot faced to Narawara in Notsuke Peninsula, eastern Hokkaido, on August 28 2020. Along Tonneusu Pond (トンネウス沼) in the North Ward of Sapporo on November 7 2020. Along Fureai Course in Nopporo Forest Park on July 17 2021.

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