Cornuta

Photo was taken in the end of April 2008


Beginning od June 2008

A S. allionii cultivar ?

Oh, I was hoping you would know that! No one knows anything about this plant. It is very pale apple green in colour. To tell the truth, since I made those two photos I have not seen my plant again so I still wonder if it is a Joviibarba or Sempervivum ....

It's a form of S. allionii, for me

I'm agree with Chromaphyo for allionii !

But i prefer 'Jovibarba Allionii' name

Please, next springtime, confirm with photos of the babies...

Welcome Jigueux

Guys, guys - and other information: breeder, year of introduction?

Thank you Chromaphyo !

Jovibarba allionii is a natural species

Information:

http://stalikez.info/fsm/semp/site/allio_gb.php#sm_1

Sorry, on the linked page I can not find anything on cultivar Cornuta.

I am nott asking about specie J. allioni, I am asking about this particular plant named Cornuta.

"Cornuta" is maybe a name for the allionii species in a foreign language ?
It is maybe a cultivar of allionii but I find nothing on the Web.
Ask on the german forum ...

Eureka ! I found !

It's not a cultivar.
Henry Correvon in "Les Joubarbes ", 1924 write p 101: (please download pdf here: http://stalikez.info/fsm/semp/site/dwnld/correvon.pdf)


Sempervivum cornutum is a actual synonym of S. arenarium (Now S. globiferum arenarium)
If you consider that globiferum superspecies is a representant of the Jovibarba genus (or subgenus if you prefer), the name Sempervivum cornutum change to Jovibarba cornuta (because Sempervivum is a neutral name and Jovibarba is a female name).

and you have your plant: Jovibarba cornuta ! but the modern name is Jovibarba globifera arenaria (or Sempervivum globiferum arenarium)

But you write:

It is very pale apple green in colour

With this description and with yours 2 pictures, I think to the allionii species but it is possible that this plant is arenarium. You have the judge and you must compare flowering between your "cornuta" and arenarium / allionii

Your plant is not a cultivar but a botanic species. She have not scientific interest because she have a old name and she is maybe mislabeled. But, this plant have a emotional interest for you

Caution ! see here : http://stalikez.info/fsm/semp/3b.php

G. Dumont write:

Cette plante a également été signalée par des auteurs dignes de foi à l'est des Alpes au pied des Alpes centrales, c.à.d. dans l'aire de Sempervivum globiferum subsp. arenarium. En fait, il ne s'agit vraisemblablement que de formes de ce dernier, celui-ci étant assez variable et ces deux plantes étant morphologiquement assez proches.
Sempervivum globiferum subsp. allionii

Un exemple de "pseudo Sempervivum allionii" autrichien.

Considéré isolément, cet individu serait facilement identifié comme un Sempervivum globiferum subsp. allionii. La taille des rosettes, le coloris jaunâtre, et même une très discrète pilosité, tout semble concorder...

Cet individu n'est pourtant qu'un variant parmi une vaste population de la subsp. arenarium en majorité du type habituel mais avec quelques variants morphologiques dont celui-ci, et formant un continuum avec le type. On voit donc qu'identifier une Joubarbe ne peut se concevoir que comme l'identification d'une population et non d'un individu isolé. En négligeant cela, on risque de tirer quelques conclusions hâtives... ce que certains n'ont pas hésité à faire concernant les exemplaires "allionioïdes" de Sempervivum globiferum subsp. arenarium.

[in situ, Mallnitztal 950 m, 98B16]

J. globifera arenaria have sometimes representatives who resembles J. allionii !!!!

Admin wrote: I am nott asking about specie J. allioni, I am asking about this particular plant named Cornuta.

Ohh ! Sorry for the mistake : i had not understood !

Congratulations Chromaphyo for have found this way !

To compare, i'll post J. arenaria's pics flowers next year... (i hope it will bloom... )