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Equisetum japonicom revisited

  • Subject: [ferns] Equisetum japonicom revisited
  • From: "Winter, Wim de" Wim.dewinter@wisl.nl
  • Date: Thu, 7 Aug 2003 12:59:32 +0200
  • Content-class: urn:content-classes:message
  • Thread-index: AcNRxp5STAoj25qeRdqKq3GQ73jAAALCs/4Q
  • Thread-topic: [ferns] artificial trees

Fernet seems to have lost its history files, so from memory:

About two years ago we were discussing the identity of Equisetum japonicum of trade. My plant has finally grown to an identifyable size again. Without any doubt it is E. ramosissimum. Confirmed is found by Tagawa (Coloured Illustrations of the Japanese Pteridophyta, 1977) who gives var. japonicum as a synonym of E. ramosissimum.

E. ramosissimum is reknown for its rhizome that may go as deep as 12 metres to reach the ground water. By what twist of mind it is being sold as a pond plant I cannot think of. It's probably because of the frequently low water tables due to the heat that it grows so well this year...

Wim0 de Winter

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