(First upload on April 25 2010. Last on July 9 2022) [ 日本語 | English ]

Daphne jezoensis Maxim.

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

Daphne L. (ジンチョウゲ)
Naniwazu (ナニワズ, 難波津)
Ezonatsubozu (エゾナツボウズ, 蝦夷夏坊主)
Life form: deciduous dwarf shrub (semi-spring ephemeral)

leaves defoliated in summer

Distribution: northern Japan - southern Sakhalin - southern Kuril
Habitat: deciduous forest
Flowering period: early spring soon after snow melt (with spring ephemerals)
Seed dispersal: animal by berry (green → orange/red)
Shoot: dioecious
Poisonous plant: producing daphnin

D. kamtschatica Maxim. var. jezoensis (Maxim.) Ohwi
D. kamtschatica Maxim. ssp. jezoensis (Maxim.) Vorosch.
D. pseudomezereum A. Gray ssp. jezoensis (Maxim.) Hamaya


Daphne jezoensis in Hokkaido

[1] Bud stage on the north slope of Mount Sankaku, Sapporo City, On April 17 2010, soon after snow-melt. [2] Flower stage in Tomakomai Experimental Forest on May 21 2005. [3] at Tomakomai Experimental Forest on April 23 2012. Whenever I saw the flowers, I saw much litter below the plants. [3] along a trail on Mount Yosomi (四十三山) at the foot of Mount Usu on April 26 2022. [5] along a stream in the Tomakomai Experimental Forest of Hokkaido University on September 12 2019. [6] at a forest edge of the byway of the bottom of Nishiyama Crater Group, Mount Usu, on April 10 2020. Records: flowering in a forest (Symbiosis Forest) near Nopporo Forest Park on May 5 2020. Near Moiwa skislope along a trail to Mount Moiwa (藻岩山) on June 22 2021. In Makomanai forest preserve for health on November 12 2022.