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A Silver Fir shuit shawin three successive years o retained leafs.

In botany, an evergreen is a plant that haes leafs in aw fower saisons, aye green. This contrasts wi deciduous plants, that completely lose thair foliage in the winter or dry saison. Thare mony different kins o evergreen plants, baith trees an shrubs. Evergreens include:

The Laitin binomial term sempervirens (leeterally, "always green") refers tae the evergreen naitur o the plant, for instance:

Acer sempervirens (a maple)
Cupressus sempervirens (a cypress)
Lonicera sempervirens (a honeysuckle)
Sequoia sempervirens (a sequoia)
Ulmus parvifolia 'Sempervirens' (an elm)

Leaf persistence in evergreen plants varies frae a few month (wi new leafs constantly bein grown as auld anes is shed) tae several decades (ower thirty year in the Great Basin Bristlecone Pine[1]).

References[eedit | eedit soorce]

  1. Ewers, F. W. & Schmid, R. (1981). "Longevity of needle fascicles of Pinus longaeva (Bristlecone Pine) and other North American pines". Oecologia 51: 107–115