Brycen

Pine Trees

                  

     Hello, my name is Brycen Lee and I'm in Ms. Davis's focus class. I'm going to talk about pine trees. Here's what I've learned so far about pine trees. Pine trees are large, tall trees that are found in mild forests areas. Pine trees have pine cones that are green and brown . The pine cones have needle like brindles that really hurt! Pine trees have no fruit on any part of the tree. The pine cones are divided into two groups which are Haploxylon and Diploxylon. A pine tree can get a disease  by bark beetles that feed on the pine trees bark and the bark beetles can kill the whole tree. In the South of Europe the pine trees wood is used for masts and general carpentry, but it is chiefly valued for its large edible seeds. The stone pines may perhaps be native of China, where it is plentiful like South Europe. All conifers have there stamens and ovules distinct inflorences. In the Taxacea these are on separate trees ("dioecious"); but most Araucariacea and all Abietina are "monoecious". Whilst there is seldom a typical cone among the Taxacea, or the Cupressina. In which the scales are arranged in alternaqting whorls, the mathematically exact spirals of the cones of the Abietina are very characteristic. There are about 35 species of pine trees througout North America, but there is no telling how many other species there are throughout the world. the roots of Abietinae do not as a rule extend to any great depth; but in the Cluster Pine (Pinus Pinaster) and the Stone Pine the tap root is exceptionally long. Pine trees are different from all the other trees, because their seeds are uncovered borne in pairs on the bracts of cones.

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