tundra found where temperature too low
and growing season too short for TREES
vegetation dominated by hemicryptophyrtes
poor flora - lichens, mosses, monocots.
high latitudes and altitudes -
arctic and alpine tundras
low temp. & precip., + high, enduring,
winds favour low-growing plants
short season favours perennials (98%);
many evergreen; pre-formed buds
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