20201212 一品红叶子特写 必应壁纸

 一品红叶子特写 在国家一品红日，我们将近距离观察一品红的叶子。尽管许多人认为红色、白色、粉色、紫色或大理石花纹的颜色是花，但实际上它们是苞片，一种有助于繁殖的叶子，通常是在植物长出真正的花朵时变色。在一品红上，苞片包围着一种名为cyathia的黄色丛生小芽，它像花瓣一样把传粉者击倒是的。还有当我们谈论一品红的时候，让我们驱散一个关于这种令人愉快的节日植物的黑暗神话：它们对儿童和宠物没有致命的毒性。早在1971年，俄亥俄州的一项研究表明，一个50磅重的孩子要吃大约500片叶子才能看到任何不良影响。那些不良影响？我们就说它们是胃肠道的品种，就这样吧。

原文:

On National Poinsettia Day we're taking an up-close look at a poinsettia leaf. Although many people assume the red, white, pink, purple, or marbled colors are flowers, they're actually bracts, a type of leaf that aids in reproduction, usually by turning color as the plant develops true flowers. On the poinsettia, the bracts, surrounding small yellow clustered buds called cyathia, flag down pollinators just as flower petals do.And while we're talking poinsettias, let's dispel a dark myth about this cheerful holiday plant: They are not fatally toxic to children and pets. Way back in 1971, an Ohio State study determined that a 50-pound child would have to eat about 500 leaves to see any ill effects. Those ill effects? Let's just say they're of a gastrointestinal variety and leave it at that.

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