These spiral vessels are part of a banana plant stem.

这些螺旋状的脉管是香蕉植物茎的一部分。

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The stem and leaves of the plant are toxic, and even the potato itself is toxic.

土豆植物的茎和叶是有毒的，甚至土豆本身也是有毒的。

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Like a snorkel, the elongated stem allows the plant to exchange gases with the atmosphere while most of it is submerged.

那茎秆就像根潜水呼吸管，当植株的绝大部分被淹没在水下时，它仍能保证植物与大气进行气体交换。

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The echinacea sold in drugstores comes in a wide range of liquids, pills, powders, and tinctures, which can be derived from some combination of the plant's root, flower, or stem.

CNN: Echinacea fails to curb the common cold (again)

But new research found that, like stem rust, stripe rust increases its genetic variability by reproducing sexually on the leaves of another host plant (the barberry), making itself more adaptable and more deadly.

ECONOMIST: Wheat rust and world farming