菫(すみれ)violet (any flower of genus Viola, esp. the Fuji dawn, Viola mandshurica)

菫(すみれ)の葉(は)っぱは長(なが)い三角形(さんかっけい)をしています。

The leaves of the violet are shaped like long triangles. {violet (any flower of genus Viola, esp. the Fuji dawn, Viola mandshurica)}

あの濃(こ)い紫色(むらさきいろ)の花(はな)を咲(さ)かせているのは菫(すみれ)だ。

The flower that's blooming in that deep purple color is a violet, specifically the Fuji dawn, Viola mandshurica. {violet (any flower of genus Viola, esp. the Fuji dawn, Viola mandshurica)}

菫(すみれ)は山(やま)の日当(ひあ)たりの良(よ)い土地(とち)に生(は)えると聞(き)きました。

I heard that violets, especially the Fuji dawn or Viola mandshurica, grow in sunny areas of the mountain. {violet (any flower of genus Viola, esp. the Fuji dawn, Viola mandshurica)}

私(わたし)は菫(すみれ)のようなパキッとした濃(こ)い紫色(むらさきいろ)が色(いろ)の中(なか)で一番(いちばん)好(す)きだ。

I like the crisp, deep purple color, like that of a violet, the best among all colors. {violet (any flower of genus Viola, esp. the Fuji dawn, Viola mandshurica)}

もう四月(しがつ)に入(はい)ったので、そろそろ菫(すみれ)が花(はな)を咲(さ)かせるころでしょう。

Since it's already April, the violets, especially the Fuji dawn, Viola mandshurica, should be starting to bloom soon. {violet (any flower of genus Viola, esp. the Fuji dawn, Viola mandshurica)}