S. altum - name, synonim

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S. altum - name, synonim

Post by I'm the 1 on Thu Oct 23, 2008 7:34 am

Sempervivum altum was first described by Turrill in 1936.

Habitat of this species are Caucasus Mts. - 1500 - 2000 m above se alevel

Description: Medium size (2,5 do 5 cm in dimather), pale green succulent leaves. Offsets are produced on long stolons. Leaves of the rosette are 2 cm long, 8 mm wide and 3 mmm thick with fine hairs on both sides. Leaves are tipped scarlet red. Red flowers of 2,5 - 3 cm in diamether and 12 - 15 cm in high. Stolons are 8 to 21 cm long. This plant needs protection from winter rain.

Synonym for this species is Sempervivum pumilum .

Link to a photo:

http://www.cactofili.org/specie.asp?mode=&gen=sempervivum&sp=altum


Last edited by Renata on Wed Jun 15, 2011 3:29 am; edited 3 times in total
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Re: S. altum - name, synonim

Post by Chromaphyo on Thu Oct 23, 2008 11:39 am

Synonim for this specie is Sempervivum pumilum .
Excuse me Renee, but I'm not agree with you

S. pumilum is not a synonym of S. altum. It's a good species.
Please see Sempervivophilia (G. Dumont)

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Re: S. altum - name, synonim

Post by I'm the 1 on Fri Oct 24, 2008 5:37 am

Sorry, I found S. pumilum as a synonim for S. altum here:

http://www.efloras.org/florataxon.aspx?flora_id=120&taxon_id=242442389

I was not aware this is wrong. Can you explain more about this mistake? It might be an unvalid classification ...

Sempervivum altum is very much alike S. annae und S. ossetiense.


Last edited by Renata on Mon Oct 24, 2011 7:17 am; edited 1 time in total
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Re: S. altum - name, synonim

Post by Matic on Mon Jan 31, 2011 3:47 pm

It looks like Chromaphyo is right. In book Caucasus and its flowers (Vojtech Holubec, 2006) the author writes about S. pumilum M. Bieb. without any synonyms and also RHS Plant finder states both species.
Last year I also found both mentioned species in Botanical gardens in Belgium:

S. altum



S. pumilum


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Re: S. altum - name, synonim

Post by I'm the 1 on Mon Jan 31, 2011 4:57 pm

Subordinated taxa:

Sempervivum altum var. altum

Sempervivum altum var. ossetiense
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Re: S. altum - name, synonim

Post by I'm the 1 on Mon Oct 24, 2011 7:25 am

Antonina Georgievna Borissova (1903–1977), a Russian botanist, put in 1939 S. pumilum as a synonim of S. altum. (Urs Eggli, Sukkulenten - lexikon: Crassulaceae) This was later proven wrong.
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