Botanik (Fach) / Morphology (Lektion)
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Flattened shoot - metamorphoses
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-shoot axis is flattened and green for photosynthesis, the leaves often reduced to spines or scales or missing
-in Ruscus (butchers broom), they look identical to leaves, but they bear flowers, which true leaves never do
-opuntia ficus-indica (prickly pear) is a cactus very common in the Mediterrenean, where it is an exotic species
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