Different species of pines and cedars (II)

We continue talking about the different species of pines and cedars.

Many of the species are characterized by small, narrow leaves, shaped like needles that grow in fascicles, in some cases protected by bracts. In the case of cypresses you can see flaky leaves, in the case of ahuehuetes they are narrower and smaller lamellae.

The production of resin and aromatic substances is very frequent in pines and cypresses, in their trunks they have resin channels. The shape of the cup usually follows a triangular pattern although it can vary and have a wider cup. The foliage of these species is permanent.

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<p style=Reproduction of different species and pine

Pine seeds develop in cones. The male cones are smaller than the female cones, they are born at the end of the young branches that mature during the winter or at the bequest of spring. These cones reach 12 millimeters.

Each of the male cones has scales that are responsible for containing pollen. Female cones are larger than male ones, you can find them in the middle and lower parts of the tree. The cones of some species remain closed in the tree for several years until they are affected by a stimulus that causes the seeds to open and release. This stage is known as serotinia.

How the pines and cedars live

Almost all species (except podacarpos) are adapted to very cold weather conditions. In the case of cypresses and pines, they can endure spending months with low water availability, cold temperatures and low rainfall. The pines are adapted to natural fires that have a thick bark that serves as a defense.

Although it seems a lie in some species fire helps in the germination of seeds. The leaves are covered with a resin that protects them from drying out.

Photo | Flickr

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