Davis' knotweed (Polygonum davisiae)

Davis' knotweed (Polygonum davisiae)

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Credit: BOB GIBBONS/SCIENCE PHOTO LIBRARY

Caption: Davis' knotweed shoots (Polygonum davisiae) emerging from thawed ground. The young leaves are protected by red ochreae (fused stipules). These are protective organs which fall off as the plant grows. Photographed on a mountain in the USA, in July.

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Keywords: biological, biology, botanical, botany, davis' knotweed, emergent, emerging, flora, flower, july, leaf, leaves, nature, new growth, ochrea, ochreae, organ, organs, perennial, plant, plants, polygonum davisiae, protection, protective, shoot, shoots, stipule, stipules, summer, thaw, thawed ground, young

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