common mallow
Refers specifically to Malva sylvestris var. mauritiana, a flowering plant. The name is typically written in katakana.
Common mallow was blooming by the roadside.
Katakana spelling is standard for this plant name; usually written in kana.
Kanji spelling exists but is rarely used; the katakana form is strongly preferred.
The name ゼニアオイ (銭葵) literally means 'coin mallow', likely from the round, coin-like shape of the fruit or leaves.