Straw Treefern

Cyathea cooperi

While this fern is a native and present on the East Coast, it has not always been present at Tumbi Wetlands. It was likely a garden escapee that finds the wetland conditions, especially near the storm water flows, very acceptable because of the enrichment that the water brings off the street.

This enrichment of storm water is a problem for all indigenous plants as it gives the exotic plants a relative advantage, enabling them to out compete native plants, which are adapted to grow in lower fertility soils.

The inset is a new fern frond unfolding, covered with the straw-like growth.(See more details)

Created on ... April 8, 2011