Hoefler50

• Sennikov, A.N. & Kurtto, A. 2017. A phylogenetic checklist of Sorbus s.l. (Rosaceae) in Europe. Memoranda Societatis pro Fauna et Flora Fennica 93: 1–78. PDF Reference page. 
• you can use the above resource.Fagus (talk) 08:07, 8 August 2020 (UTC)

Thanks Hoefler50 (talk) 10:13, 8 August 2020 (UTC)