Mock Bishopweed (Ptilimnium capillaceum)

Full sun to part shade
Average to high water needs
Size: 12"-18" tall 
Bloom time: Spring, Summer

Winter dormant. Host plant for black swallowtail butterflies. Reseeding annual in the carrot family.

https://flawildflowers.org/flower-friday-ptilimnium-capillaceum/​

https://florida.plantatlas.usf.edu/plant.aspx?id=803