Sonntag, 8. Mai 2011

Plant of the Day (May 8th, 2011) - Athyrium filix-femina (L.) Roth.

Two days ago I presented Drypoteris filix-mas (L.) Schott. In this post I also had addressed the differences between this species to Athyrium filix-femina (L.) Roth. Yesterday, I was walking a bit and found exactly this species in a forrest. So today's “Plant of the Day” will be Athyrium filix-femina (L.) Roth (English: “Lady Fern” and in German “Wald Frauenfarn”)., so I can show you directly the differences between these two species.

A. filix-femina - habitus

A. filix-femina is a fern, which belongs to the family of the Woodsiaceae. It's fronds are between 0,5 and 1 metre high (1,6 – 3,2 feet) and bright green. The leaflets are subdivided into small leaflets. So, the whole frond has a fine, delicate appearance and looks not so rough as the fronds of D. filix-mas. That's why the species is called “Lady Fern”.

A. filix- femina - habitus

A. filix-femina - fronds

The Sori of A. filix-femina are comma-shaped, narrow and long. They are sitting at the underside of fertile fronds in two rows. Each Sori is coverd by a grey veil ("Indusium")

A. filix-femina - Sori

A. filix-femina - Sori

The “Lady Fern” is widespread throughout the temperate broads. It grows especially on acid forest soils and also likes fresh and shady places.

A. filix- femina - habitus

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