(First upload on September 15 2008. Last on August 28 2023) [ 日本語 | English ]
Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily
HOME > Plant list (植物リスト) > Asteraceae (キク科) > Lactuca scariola
Lactuca L. (アキノノゲシ)Togechisya (トゲチシャ, 刺萬苣), prickly lettuceLife form: annual - biennial forb Distribution: widespread weed in cool to tropical regions (exotic to Japan) Habitat: sunny sites, e.g., crop field, waste ground, roadside verge Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト) Chromosome number: 2n = 18 |
Lactuca serriola L., the standard f. integrifolia (Bogenh.) G. Beck. (マルバトゲチシャ)Leaf: non-laciniated Leaf: sometimes spine-less |
|
1
2
3
4
5
6
[1/2] at N25/W1, North Ward, Sapporo, on July 28. [3] at a roadside in N28/E2, East Ward, Sapporo, on August 21 2018. [4] at N15/W1, North Ward, Sapporo, on July 19 2017. [5] at MAX PSU South Station, Portland, Oregon, on August 8 2017. [6] along a paved road in N28/E2, East Ward, Sapporo, on July 14 2020. Discard: in a parking lot along a radoside, West Ward, Sapporo, on August 30 2008.
1
2
[1] at N25/W1, North Ward, Sapporo, on August 1 2011. This species has dimorphic leaves. [2] a spine-less leaf beside Atsuma River Bridge, Atsuma Town, on August 5 2022.