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As a comment about Job's Beard (Sempervivum x nixonii), valleylynn wrote:

Sempervivum x kwedania PJ Mitchell (1982)
Sempervivum x mitchellii Zonneveld (1982)
Sempervivum x smithii Mitchell PJ (1987) (nom. illeg., Artillery 53.1)
All four forms are a cross between Sempervivum globiferum x Jovibarba heuffeli
Name: Peter Dieckmann
Germany
Region: Europe Sempervivums Container Gardener Hibiscus Bee Lover Butterflies
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banker07
Sep 8, 2013 5:31 AM CST
as I wrote elsewhere all the x nixonii are Jovibarbas at your definition at ATP; so this plant has to be slided to the database of Jovibarba;

all the globiferum-species are Jovibarbas equally...

so it has to be

Jovibarba x kwediana
Jovibarba x mitchellii
Jovibarba x smithii
Jovibarba x nixonii

and "all four forms are a cross between Jovibarba globiferum x Jovibarba heuffelii"

in newer time the hybrid-name "x nixonii" become a topic for all those crosses; so I suggest to call them Jovibarba x nixonii (x kwediana) etc.
[url=www.sempervivum-liste.de]www.sempervivum-liste.de[/url]
[url=www.hauswurze.de]www.hauswurze.de[/url]
Name: Lynn
Dallas, OR (Zone 8b)
Charter ATP Member Garden Sages I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! Plant Database Moderator
Forum moderator I helped beta test the first seed swap Celebrating Gardening: 2015 Plant and/or Seed Trader Garden Ideas: Master Level Sempervivums
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valleylynn
Sep 8, 2013 4:48 PM CST
Thank you Peter. I think I made all the corrections in the Sempervivum database and moved all the globiferum to Jovibarba.
[Last edited by valleylynn - Sep 9, 2013 3:55 AM (+)]
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Name: Peter Dieckmann
Germany
Region: Europe Sempervivums Container Gardener Hibiscus Bee Lover Butterflies
Dragonflies Birds Hummingbirder Frogs and Toads Dog Lover Cat Lover
Image
banker07
Sep 9, 2013 2:17 AM CST
then your sectioning is tidy Big Grin
[url=www.sempervivum-liste.de]www.sempervivum-liste.de[/url]
[url=www.hauswurze.de]www.hauswurze.de[/url]
Name: Lynn
Dallas, OR (Zone 8b)
Charter ATP Member Garden Sages I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! Plant Database Moderator
Forum moderator I helped beta test the first seed swap Celebrating Gardening: 2015 Plant and/or Seed Trader Garden Ideas: Master Level Sempervivums
Image
valleylynn
Sep 9, 2013 3:55 AM CST
Thumbs up

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