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220 Views 2 Replies Last post: Jul 14, 2014 3:51 PM by Bonnie RSS
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Jul 14, 2014 3:14 PM

Fern ID question

Found this fern in woodland in Suffolk and I can't work out what it is.


Most pictures I have found of things that resemble it have orange coloured spores, but these are grey. Is it just that they are grey in their immature stage and tun orange later, perhaps?

 

Many thanks!

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    Jul 14, 2014 3:43 PM (in response to Bonnie)
    Re: Fern ID question

    Hi Bonnie,

    your woodland fern is Dryopteris filix-mas (Male fern). The developing spores in the sporangia under the rather kidney shaped shielding indusium will start out whitish -green then as they mature become blackish - this gives you the greyiosh colour that your seeing. As the sporangia dehisce and release the spores their dead remains and that of the indusium will become rather brownish giving you the colour you were expecting to see.

    Regards

    Fred

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