Fertile and Sterile Horsetail

Fertile and Sterile Horsetail

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Credit: JOHN KAPRIELIAN/SCIENCE PHOTO LIBRARY

Caption: Horsetail (Equisetum sp.) with fertile (brown) and sterile (green) fronds.

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Keywords: botany, equisetaceae, equisetophyta, equisetum, fertile stem, flora, horsetail, horsetails, nature, plant, pteridophyte, pteridophytes, reproductive structure, spore-producing cone, stalk, sterile fronds, strobili, strobilus, vertical

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