Kentucky Plant Atlas




Taxonomic distinction unclear    No county information
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Asteraceae <Eupatorieae> Eupatorium <Uncasia> X godfreyanum ("vaseyi")
Eupatorium X godfreyanum Cronq.
ALI: no HAB: n/a, n/a, n/a, n/a ABU: n/a, n/a, 0
This name has been applied to a series of apomictic polyploids (2n = 30, 40) derived from hybridization of pubescens and sessilifolium (FNA 21). However, at least some colls. from Ky. that have been given this name might be better treated as the relatively northern E. sessilifolium var. brittonianum Porter, which suggests an introgressant. The name E. godfreyanum should perhaps be restricted to more eastern plants, which are most frequent in Va. (W). The verified Ky. colls. are from FLEM (B), LEWI (B) and ROWA (R.K. Godfrey #70017 at TENN); the latter was determined not to produce pollen. This small cluster of records in the northeastern Knobs region does suggests a distinct taxon. The colls. were initially named E. vaseyi Porter in error; see notes under that name.