Nomenclature: wfo-0000033707
![Emil Hassler (1864-1937) Emil Hassler (1864-1937)](http://commons.wikimedia.org/wiki/Special:FilePath/Dr.%20Emil%20Hassler.jpg)
Calea annua
Nomenclatural References
- person : Emil Hassler (1864-1937) Based on occurrence of standard abbreviation 'Hassl.' in the authors string.
- database : The Plant List v1.1 record gcc-132589
- database : The Plant List version 1.0, record: gcc-132589
Taxonomy: Accepted in 2024-06 classification
Occurs in: 2018-07 : 2019-03 : 2019-05 : 2021-12 : 2022-06 : 2022-12 : 2023-06 : 2023-12 : 2024-06Placement: Code > Plantae > Pteridobiotina > Angiosperms > Asterales > Asteraceae > Asteroideae > Neurolaeneae > Calea > Calea annua