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New Zealand Pigmyweed, Crassula helmsii


Short description of Crassula helmsii, New Zealand Pigmyweed

New Zealand pygmyweed is a perennial with yellowish-green opposite ± succulent leaves < 20mm long and solitary white or pale pink flowers on pedicels >2mm in the leaf axils. Seed form found in GB but  may not be viable.

Description of Crassula helmsii, New Zealand Pigmyweed status in GB

Invasive throughout most of England, particularly the south; scattered elsewhere.

Habitat summary: Crassula helmsii, New Zealand Pigmyweed

New Zealand pygmyweed grows in ponds, lakes, reservoirs, canals and ditches as well as on damp mud on the margins of ponds and reservoirs. It tolerates a wide range of conditions, from basic to acidic and oligotrophic to eutrophic.

Overview table

Environment: Freshwater
Species status: Non-Native
Native range: Australia, New Zealand
Functional type: Land plant
Status in England: Non-Native
Status in Scotland: Non-Native
Status in Wales: Non-Native
Location of first record: v.c.18 (Greensted)
Date of first record: 1956

Distribution map

GB Distribution from BSBI

Author's name:

R.V. Lansdown

Last updated:

October 3rd 2019

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