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Swollen nodes on the stem of Polygonum chinense (LAU_WaiKong)
Updated on 12/04/2015

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This photo shows two swollen nodes on the stem of Polygonum chinense. Swollen nodes are the swelling sites at the base of petiole. It is a major feature of Polygonaceae family. Swollen nodes are covered with a tubular sheath-liked expansion called ochrea. Orchea is a plant structure 
formed of stipules fused into a sheath surrounding the stem.

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CUHK Lab

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Good job!

by Cherry_Chow (Teacher) at 2015-04-13 12:50:20

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swollen node

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swollen node and ochrea

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petal , sepal , pileus , suspensor , stipe , Labellum , columella , sporangium , pistil , zygosporangium

Swollen nodes on the stem of Polygonum chinense (LAU_WaiKong) Updated on 12/04/2015

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Swollen nodes on the stem of Polygonum chinense (LAU_WaiKong)
Updated on 12/04/2015