Viola sieboldii (species of violet)
A species of violet native to Japan; the name literally means 'foothill violet'.
In spring, Viola sieboldii begins to bloom at the foot of the mountain.
Katakana spelling is common for plant names; usually written in kana.
Kanji spelling is rare; the word is usually written in kana.
From 麓 (ふもと, 'foot of a mountain') + 菫 (すみれ, 'violet'), referring to its typical habitat.