Dear Olga,

I am not specialised on vegetation on steppe, however, have rather large experience with R. Soó's publications. The problems are following: 1) Soó wrote large amount of papers and sometimes he published more papers during one year. As many of his papers are witten in Hungarian, it is sometimes difficult for other people to estimate in which of the papers could be published particular description. Additionally, my impression from Soó's papers is that he was able to place anything anywhere, and thus e.g. some aquatic syntaxa were described in the paper focused mainly on halophilous vegetation;

2) Many of the Soó's descriptions are invalid, mainly as nomina nuda according to the article 2b of ICPN  (there are many cases when the association name is only mentioned in the text, without any relevé or table of relevés). However, some of the names which were just mentioned in some of his older papers we  documented by relevé(s) in some newer publication. It is one of the sources of the confusions because some of the authors (especially those before the first version of the International Code of Phytosociological Nomenclature publication) used the year of invalid publication in syntaxa names, some other authors the year of valid publication.... and some other made type error in the date and thus many of the associations are given with very variable years of description. Even Soó himself, when refered to his own papers, often gave several various dates or he even did was not sure about the year of publication of the associations he should describe!

3) Some of the valid descriptions are documented just by a single relevé which is so well hidden in the text that many people did not find it and considered the descriptions as invalid (e.g. the case of species poor vegetation like Lemnetum minoris or Potametum crispi associations).

May be some of the colleagues who will join your question will know accurately where the description of Stipetum lessingianae was validly published for the first time. If no, than I recommend you to check all the papers published in the years which appear in various forms of the name, i.e. besides 1948 also 1927, any may be also some later papers, if you would not be successful. The paper from 1927 is probably Soó R. von (1927): Geobotanische Monographie von Kolozsvár (Klausenburg). A studium könyvkiadó R. T. Bizománya, Budapest. 

For 1946 I do not have any idea but will try to check some sources of references when I will be in my office.

From the newer papers there is important

Soó, R. (1964): A magyar flóra és vegetació rendszertani-növenyföldrajzikézikönyve I. (Synopsis systematico-geobotanica florae vegetationisque Hungariae I). - Budapest 589 S. I think there are not valid descriptions of associations, just list of syntaxa, however, there are references to older Soó's papers and the names have authors and years of publication, thus potentially there can be some new information for you. Of course, there is couple of other papers. As in the following weeks I must go through them (search of aquatic syntaxa), I can check them for Stipetum lessingianae too (unfortunately, the papers are not available in my institution and thus I can not manage it immediately).

If you hurry on the correct reference of Soó's paper, you can try to contact someone from Hungary here on ResearchGate directly (by sending message), e.g. Róbert Pál, Zoltán Botta Dukát or Attila Lengyel.

Good luck in your search and best regards!

Katerina

Hello dear Katerina!

Thanks for the answer!

I am very grateful to you and are also ready to help you, especially as regards the vegetation of the steppe part of the Rostov region.

Write to me if you need anything! All the best, Olga