Letitia Elizabeth Landon.
In L. E. L.’s poetical works, “Excelsior” Edition, the above is called “The Violet,” and lines 3 and 4 are—
There are no flowers grow in the vale
Kiss’d by the dew, woo’d by the gale,
and the final lines are—
Never a rose shall grow on that tomb,
It breathes too much of hope and of bloom,
But there be that flower’s meek regret,
The bending and deep-blue violet!