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Cranfillia fluviatilis

Cranfillia fluviatilis, synonym Blechnum fluviatile, is a fern known in the Māori language as kiwikiwi. A herbaceous plant, C. fluviatilis is a "hard fern" of the genus Cranfillia in the family Blechnaceae. It was identified by Patrick Brownsey in 1979. Other common names are star fern, creek fern, kawakawa and kiwakiwa.

Morphology
Ladderlike fronds of C. fluviatilis measure up to long. Growing in a distinctive ground-hugging rosette shape, its fertile fronds – dark brown and spiky – stand upright from the centre, while the drooping sterile fronds with their nearly round leaflets, form the rosette. As the parent plant ages it develops a short trunk central to a surrounding colony. ==Range and ecology==
Range and ecology
The hardy C. fluviatilis requires moist, shaded conditions for optimal growth. A small ground fern, the species is native to New Zealand and southeast Australia, a syntype common throughout the country in damp, shady areas in acidic, moist and boggy soil, beside streams in forest areas. ==History==
History
It was collected by William Colenso in December 1841, at the precise locality of woods near Poverty Bay in the North Island. ==References==
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