Reference:Turner1964a
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Verbatim text: Turner, B. L. and D. B. Horne. 1964. Taxonomy of Machaeranthera sect. Psilactis (Compositae–Astereae). Brittonia 16: 316–331.
Author: Turner, B.L., Horne, D.B.
Year: 1964
Title: Taxonomy of Machaeranthera sect. Psilactis (Compositae–Astereae)
Journal: Brittonia
Volume: 16
Pages: 316–331