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2. Recherches caryologiques sur qualques especes du genre Salvia;Benoist E.;Rev. Cytol. et Cytophysiol. Veg.,1937
3. IOPB Chromosome number reports. XXXII;Benoist E.;Taxon,1971
4. Ploidie und Chloroplastenzahlen;Butterfass T.;Ber. dt. bot. Gesellsch.,1960
5. Chromosome numbers in certain species of Labiatae Juss. and Scrophulariaceae Lindl. indigenous to the USSR;Chuksanova N. A.;Bot. Zhurn.,1971