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(First upload on September 11 2013. Last on July 8 2018) [ 日本語 | English ]

Rorippa L. (イヌガラシ) Inugarashi (イヌガラシ, 犬芥子), variableleaf yellowcress Lifeform: weedy perennial forb < 60 cm high Distribution: east Asia, including the whole of Japan Habitat: urbanized areas, crop fields, riversids, grasslands, etc. (wet sites) Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト) HUSTEP: Plants and Plant communities in Japan (flora list)

Flower: no hair, φ = 4-5 mm Style: short and thick Fruit: 11-21 mm long Leaf: few teeth ↔ R. islandica fl = 3 mm, fr = 6 mm, st = slim, lf = many teeth Chromosome number: 2n = 24, 32, or 48 Synonyms: Rorippa atrovirens (Hornem.) Ohwi et H. Hara var. apetala Hochr. (アオイヌガラシ): no petals f. longicarpa (Koidz.) Kitam. (ナガミノイヌガラシ): long capsules

Rorippa indica in Hokkaido

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4 5 6
[1] in a waste land near Muroran Marine Station, Muroran City, on September 12 2016. [2] along a road, N15/W4, North Ward, Sapporo, on June 17 2013. [3] in a small park, N26/W4, North Ward, Sapporo, on May 23 2018. [4/5] at a roadside, N21/W4, North Ward, Sapporo, on May 24 2014. [6] in front of the Faculty of Agriculture, Hokkaido University, on June 17 2014.