Definission: Of plant duration, a plant whose life span extends over more than two growing seasons, c.f. annual, biennial, ephemeral, of flowering with respect to architecture, hapaxanthic, monocarpic, pleonanthic
Definission: Plant development by producing two or more stems. Examples: roundleaf dogwood (Cornus rugosa) and red huckleberry (Vaccinium parvifolium).
