Bran: (a perennial always has a period where it perishes above ground level and renews from it's roots...

***Thank you for your illuminating input. However, you should delete the "always," for evergreens are sometimes included among the perennials

***...while meantime I've learned the term I was looking for apparently is "herbaceous perennial." But by chance is there a single word for this kind of herb

dalehileman