DENDROLOGY

Detailed explanation-1: -Leaves. Leaves are specialized photosynthetic organs. The varied leaves of conifers are attached singly along the stems in a helical pattern (in some genera the leaves appear whorled) or in opposite pairs or trios. Many Cupressaceae and a few other conifers have minute scale leaves only a few millimetres long.

Detailed explanation-2: -Most conifers are evergreen, have perennial leaves, i.e. their leaves stay on the shoots 3-8 years. Some conifers, however, have deciduous leaves, lasting only one season (e.g. Larix sp.) The leaves are always simple, either narrow, linear or needle-like, or very small, scale-like.