https://fsus.ncbg.unc.edu/main.php?pg=show-taxon-detail.php&lsid=urn:lsid:ncbg.unc.edu:taxon:{2BC8130F-F1D3-4569-A514-705EEEB6B600}
Helianthus praecox Engelmann & A. Gray ssp. praecox . Texas Sunflower, Galveston Sunflower. Phen: Jul-Oct. Hab: Sandy areas. Dist: Endemic to se. TX.
Origin/Endemic status: Endemic
Synonymy: = FNA21, K3, K4; = Helianthus debilis Nutt. ssp. praecox (Engelm. & A.Gray) Heiser – Tx
Heliophily ?: 9
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