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 can you ID this Cyathea? 
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Joined: Mon Mar 23, 2015 1:11 am
Posts: 5
Location: London UK, Hanwell
Post can you ID this Cyathea?
One of my Cyathea expected to be either C.browni or C.cooperi. At least I believed I ID'ed and collected spores from the species. It looks unlike both. Here the pictures:

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Thu Apr 20, 2017 2:18 am
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Joined: Sun Sep 02, 2012 7:46 pm
Posts: 862
Location: Maastricht Netherlands
Post Re: can you ID this Cyathea?
Hi Alex, resembles a brownii hybrid [ brownii / cooperi] , I already Saw many copies that looked like this here and seen by other growers! Difficult to determine correctly :roll:

Eduard.

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Thu Apr 20, 2017 10:19 am
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Joined: Wed Jun 23, 2010 12:59 pm
Posts: 113
Location: The Netherlands
Post Re: can you ID this Cyathea?
Hybrids between tree ferns species seem to be very rare and few have been discribed. I therefore don't think there is a good reason to think this might be a hybrid. Cooperi is so variable.


Thu Apr 20, 2017 10:40 am
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Joined: Sun Sep 02, 2012 7:46 pm
Posts: 862
Location: Maastricht Netherlands
Post Re: can you ID this Cyathea?
I have heard that research has been done, the brownii's that I raised here [brownii var.] has brownii and cooperi genes .

Eduard.

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2016 min. -07.0ºC --- max. 35.4ºC
2017 min. -08.1ºC --- max. 23.5ºC


Thu Apr 20, 2017 11:18 am
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Joined: Wed Oct 31, 2007 5:52 pm
Posts: 7409
Location: Hayward- S.F. Bay area Ca.
Post Re: can you ID this Cyathea?
I would go with C.brownii. Funny that here in the states its never sold at nurseries. You have to internet order it. C.cooperi is sold everywhere.


Thu Apr 20, 2017 10:47 pm
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Joined: Mon Mar 23, 2015 1:11 am
Posts: 5
Location: London UK, Hanwell
Post Re: can you ID this Cyathea?
The most remarkable property of the "hybrid" is the extremely fast maturation. The "spore-to-spore" time was just 25month! Two other spore samples, I presume C.coopery and C.browni, were seeded simultaneously. C.coopery become fertile a year after the "hybrid", whereas C.browni 7 years on still has no spores. The "hybrid" spores are viable and fast to produce protallys. I would expect some fertility issues from a hybid. C.marcescens is well known example.

Still Eduard's hypothesis has a good chance as I had C.coopery and C.browni specimens sids-by-side when early protallys were replanted in one "sporelining" box. Here: three bottom rows are Cyathea leichardtiana, Cyathea brownii and Cyathea cooperi.

Image

On the other hand the plants are "C.cooperi", "C.browni" or "C.mistery" only in my opinion. I hope you will agree with me on the first two at least.

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Early days when I collected spores in RBG Melbourne I labelled them "cooperi" or "browni" almost randomly. As result I used spores from these three plants (below) and later randomly peaked few sporelins from every germline. So they all are of nameless descent.

Image


Fri Apr 21, 2017 3:04 am
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