RE: Re: ferns DIGEST V1 #166

Larry,

The young croziers when they appear are protected by very thin chaffy scales, that remain on the stipe when the leave is fully expanded. I think it is what you call "brown papery sheaths". 

On the expanded leaf's stipe  the scales are of course more sparsely set. They look like rough, long triangles with their short base attached to the plant. In D. carthusiana the scales are uniformly coloured pale brown. D. dilatata, however, has in addition a longitudinal blot of very dark brown to black running over the centre of the scales. It is very easy to see.

Wim








-----Original Message-----
From: owner-ferns@hort.net [o*@hort.net]On Behalf Of
Larry Shone
Sent: Sun, May 01, 2005 22:41 
To: ferns@hort.net
Subject: Re: [ferns] Re: ferns DIGEST V1 #166


Thanks Wim, I'm going to google for those 2 species to compare. My plant is
in its second year but
it is recovering from a winter outside in heavy clay. But good news, I
noticed new croziers appearing today,
2 of the ones that were already there coming out of the brown papery sheaths
and 2 small ones coming from under the
compost!
I need some explanation of the stipe scales, what are these exactly?

Many thanks
Larry
From: "Winter, Wim de" <Wim.dewinter@wur.nl>
To: <ferns@hort.net>
Sent: Sunday, May 01, 2005 9:23 PM
Subject: RE: [ferns] Re: ferns DIGEST V1 #166


> Larry,
>
> Here in the Netherlands both D. carthusiana and D. dilatata frequently pop
up
> in any moist plant pots in the garden. Your pictures look like a one year
old
> sporeling of either. If still too young, than I expect at least by the end
of
> the year it'll have grown enough to see whether the stipe scales are
uniformly
> pale brown (carthusiana) or have a dark interior (dilatata).

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