Monday, 30 January 2012

Fern learning: Lesson 2

On 20th Jan I wrote a bit about four ferns which you can hunt for at Filnore Woods. 

Bracken - the one with a central stalk,

Harts Tongue with rosettes of simple fronds,

Polypody where the fronds are "simply pinnate", which means just divided once - each leaflet of the frond is called a "pinna",

and Male Fern, where the fronds are bi-pinnate, which means divided and then divided again - each pinna is divided into "pinnules".

Today's new fern is the Broad Buckler Fern.  This one is "tri-pinnate", so each pinna is divided into pinnules and each pinnule is divided into "pinnulets".  Very feathery.

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