HOLOTYPE

*Tithonia argophylla* D.C. Eaton in S. Watson, Botany, US Geol. Expl. 40th Parallel. C. King, ed. 5:423. 1871.

*Encelia argophylla* (D.C. Eaton) A. Gray, Proc. Amer. Acad. 8:657. 1873.

*Helianthella argophylla* (D.C. Eaton) A. Gray, Proc. Amer. Acad. 19:9. 1883.

*Enceliopsis argophylla* (D.C. Eaton) A. Nelson, Bot. Gazette 47:433. 1909.

Isotypes at GH, US.

Det. Curtis Clark, February 2003.

Yale University Herbarium

YU.026077

THE OHIO STATE UNIVERSITY
TYPE-COLLECTION of
*Tithonia agrophylla* D. C. Eaton in S. Watson

Reference: U. S. Geol. Exp. 40th Par. Bot. 5: 423. 1871.

Verified by: John C. La Duke Date: June 25, 1980.

Remarks: HOLOTYPE. (1 of two sheets, both at YU) = *Enceliopsis agrophylla* (D. C. Eaton in S. Watson) A. Nelson