Hydrocotyle tripartita ‘Japan’ – Aquascaping Plant (original) (raw)

CEH Information Sheet 24: Hydrocotyle ranunculoides

INFORMATION SHEET 24: FLOATING PENNYWORT Hydrocotyle ranunculoides, the Floating Pennywort, is a native of North America but has become naturalised in Central and South America and also occurs in the Netherlands and in southern mainland Europe. It was first brought to Britain in the 1980's by the aquatic nursery trade to sell as a plant for tropical aquaria and garden ponds. The first note of concern over its potential to become a weed was published in 1936. H. ranunculoides roots in the shallow margins of slow-flowing water bodies, particularly ditches, slow flowing dykes and lakes and forms dense interwoven mats of vegetation which can quickly cover the water surface interfering with the ecology and amenity uses of the water body. Under UK conditions mats of vegetation have been observed to grow up to 15 metres from the bank in a single season, growing at approximately 20 cm per day! H. ranunculoides roots freely from nodes at approximately 40-60 mm intervals, its roots are pr...

Aquatic Botany

2016

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier’s archiving and manuscript policies are encouraged to visit: