Sempervivum arachnoideum subsp. tomentosum
Synonymy
Source: Marhold, K. (2011+): Crassulaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Sempervivum arachnoideum subsp. tomentosum in Schinz & Keller, Fl. Schweiz, ed. 4: 325. 1923
Content
Bibliography
C. Gilli, C., Pachschwöll, C. & Niklfeld, H. (ed.), Floristische Neufunde (305-375) in Neilreichia 10: 197-274. 2019 2019. http://doi.org/10.5281/zenodo.2630545
E. Tutin, T. G., Heywood, V. H., Burges, N. A., Valentine, D. H., Walters, S. M. & Webb, D. A. 1964–1980: Flora europaea 1-5. – Cambridge: Cambridge University Press