Reference:Ertter1993a
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Verbatim text: Ertter, B. 1993c. A re-evaluation of the Horkelia bolanderi (Rosaceae) complex, with the new species Horkelia yadonii. Syst. Bot. 18: 137–144.
Author: Ertter, B.
Year: 1993c
Title: A re-evaluation of the Horkelia bolanderi (Rosaceae) complex, with the new species Horkelia yadonii
Journal: Syst. Bot
Volume: 18
Pages: 137–144