ニューヨーク植物園のインスタグラム(nybg) - 8月25日 00時00分

The growth form of stem succulent cacti is highly specialized. This is a close-up view of the fuzzy white pads (areoles) that grow clusters of spines. Each areole is a very specialized branch, and this branch has a tight spiral of leaves (which are modified to look like spines)! #nybgscience #cactus #plants

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