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You are here: > Outdoor Learning Activities > Tree Rings for Art and Dendrology Studies > PINE, PONDEROSA, TREE ROUND (Western Softwood). |
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PINE, PONDEROSA, TREE ROUND (Western Softwood).
ITEM #: T-18086
PRICE: $2.79
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| Resource Description
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| PINE, PONDEROSA TREE ROUND (Western Softwood). Also sometimes known as the Blackjack or Western Yellow Pine, this is the most widespread native pine found in western North America. It is a dominant tree in many mountainous areas. When stressed, it is susceptible to pine beetle infestations. For a description of a kit we offer on pine beetle ecology click here. This high quality tree branch cross section (disc or tree cookie) is perfect for studying seasonal tree rings to calculate the age of a tree or limb, identify tree anatomy (heartwood, sapwood, cambium and inner/outer bark layers), study different growth patterns (tree ring irregularities, evidence of branching) and variation in growth patterns and climatic variations over time. Each cross section is fine sanded on one side to assist in reading tree rings. Since there is variation among all of the rounds, looking at several specimens of each species provides for an optimal learning experience. Individual disc size ranges from 2” to 4” across by 1/4” to 3/8” thick. #T-18086.
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