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Retoreto/Red Azolla  Azolla rubra
Native. Not assessed.

This is perhaps Aotearoa New Zealand's most unusual species of fern is as much as it is entirely aquatic, being found on ponds and slow-flowing streams and ditches.


It is found throughout both Islands but has predominantly been replaced in Northland by an introduced Australian species. Also, found throughout the Pacific reaching as far as India.

As can be seen from the photograph it can form dense patches which can cover entire areas. Usually brick red or glaucous green it produces spores which are dispersed either by wind, water or by attaching themselves to anything that move through their environment.

NZPCN-Azolla rubra

iNaturalist-Red Azolla
P1010023.JPG
Rauarahu/Austral Bracken  Pteridium esculentum
Native. Not threatened

Thought by many to be the bracken of the Northern Hemisphere it is in fact native to parts of Southeast Asia, the Islands, Australia and New Zealand and is easily distinguished from its northern cousin by its more delicate foliage.

It is a fairly robust plant which grows from underground rhizomes and spreads quickly in disturbed ground to the extent that it can quickly become a serious pest.

 

As can be seen in the photograph the frond are upright and are triangular when fully open.

It is said that this species is less toxic to stock than other species but can still prove detrimental if eaten over long periods. Rhizomes are reputed to be edible.

NZPCN-Pteridium esculentum

bracken
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