436 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
TITHONIA DECURRENS A. Gray, Mem. Amer. Acad. n. ser. 4: 85. 1849. 
This is Viguiera decurrens A. Gray.® 
TiTHoNIA EXcELSA DC. Prodr. 5: 585. 1836. 
This is Viguiera excelsa (Willd.) Benth. & Hook. 
TITHONIA GLUTINOSA Collie; Hook. & Arn. Bot. Beechey Voy. 33. 1830, as synonym. 
This is Flourensta thurifera (Molina) DC. 
TITHONIA HUMILIS Kuntze, Rev. Gen. Pl. 2: 552. 1891. 
This is Rivina humilis L., of the family Phytolaccaceae. 
‘‘TITHONIA LACINIATA Raeusch. Nom. ed. 8: 251. 1797.” 
® Proc. Amer. Acad. 19: 5. 1883. 
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