Revisions of the genera Acanthospermum, Flourensia, Oyedaea, and Tithonia,
Blake, S. F. 1892-1959.
Revisions of the genera Acanthospermum, Flourensia, Oyedaea, and Tithonia, by S. F. Blake. - Washington, Govt. print. off., 1921. - v, 383-436, vii-viii p. pl. 23 25 cm. - Smithsonian institution. United States National museum. Contributions from the United States National herbarium, v. 20, pt.10 .
"Bulletin of the United States National museum."
agr21000707
Compositae--Classification.
QK1 / .U5 vol. 20, pt. 10
Revisions of the genera Acanthospermum, Flourensia, Oyedaea, and Tithonia, by S. F. Blake. - Washington, Govt. print. off., 1921. - v, 383-436, vii-viii p. pl. 23 25 cm. - Smithsonian institution. United States National museum. Contributions from the United States National herbarium, v. 20, pt.10 .
"Bulletin of the United States National museum."
agr21000707
Compositae--Classification.
QK1 / .U5 vol. 20, pt. 10