Taxonomically Palafoxia is one of the most perplexing genera of Texas Compositae; phylogenetically and geograph ically it is one of the most intriguing.
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Shinners, Lloyd S.
"The Texas Species of Palafoxia (Compositae),"
Field and Laboratory: Vol. 20
Available at: https://scholar.smu.edu/fieldandlab/vol20/iss3/2