Synonymes for S. carpathicum

Currently, in my opinion, valid as Sempervivum carpathicum with two subspecies:

S. c. ssp. carpathicum

S. c. ssp. heterophyllum

References:

http://www.landesmuseum.at/pdf_frei_remote/PHY_38_2_0323-0336.pdf


http://www.landesmuseum.at/pdf_frei_remote/PHY_42_1_0109-0115.pdf

So no longer a subspecies of S. montanum. Likewise, S. stiriacum is a full valid species, not a subspecies. The reason is that all three are morphologically distinct and genetically isolated from each other. S. stiriacum grows in the region between S. montanum and S. carpathicum. So there is no direct contact between S. montanum and S. carpathicum. Any hybrids between S. stiriacum and the other two would be sterile as S. stiriacum is tetraploid while both others are diploid.

There was even one combination later, the combination of D. R. Letz. He published following:

S. wettsteinii subsp. wettsteinii (= S. montanum subsp. carpathicum)

S. wettsteinii subsp. heterophyllum (= S. montanum subsp. heterophyllum)

The names as subspecies are used most often now.

OK, thanks! Is this article also online?

I only don't understand why these are still subspecies, as also they are both morphologiocally and ecologically (altitude, type of rock) distinct so clearly separate evolutionary units. I guess this is largely a matter of preference.

Illustator,

it is a bit longer article - it is the dissertaion of D. R. Letz.

Both plants are morphologically and ecologically distinct from the other subspecies of S. montanum. But both plants also have the main characters of S. montanum - for example altitude by the most subspecies, the nice smell of the plants, the special drought resistance, the shape of the leaves, the always grow on acid rock, the blooms...