石头草在美洲沙漠中有一种草，样子就像沙漠中的小圆石，当地人称它“石头草”。这种草杂生在真正的石头中间，使人分不清是石头还是草。有趣的是，从石头草两片叶子中间的小孔中，还能开出朵朵美丽的小花来。眼镜蛇草在北美洲岩石中长着一种奇特植物，平均长２０～２５厘米， Stone grass has a grass in the American desert, looks like a small rock in the desert, locals call it “stone grass.” This grass is miscellaneous in the middle of a real stone, making it indistinguishable from stone or grass. Interestingly, from the small hole in the middle of the two leaves of stone grass, but also to open a beautiful flower blossoming. Cobra grass in North America rocks with a strange plant, an average of 20 to 25 cm long,