perennial

Examples of perennial in the following topics:

• Plant Life Spans

  • Perennials, such as the magnolia, complete their life cycle in two years or more.
  • Other polycarpic species, such as perennials, flower several times during their life span, but not each year.

• Organismal Ecology and Population Ecology

  • The wild lupine (Lupinus perennis) is the host plant for the Karner blue butterfly.

• Subtropical Deserts and Chaparral

  • Very dry deserts lack perennial vegetation that lives from one year to the next.

• Boreal Forests and Arctic Tundra

  • The soils of the Arctic tundra may remain in a perennially frozen state referred to as permafrost.

• Genetic Control of Flowers

  • Many perennial and most biennial plants require vernalization to flower.