Compositae Working Group (CWG) (2025). Global Compositae Database. Helianthus maximiliani var. asperrimus Engelm. & A.Gray. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1164187 on 2025-09-12
original descriptionBoston J. Nat. Hist. 5(2) page(s): 249 [details]
Unreviewed
Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Helianthus maximiliani Schrad. var. asperrimus Engelm. & A.Gray [IPNI] [details] LSID urn:lsid:compositae.org:names:AB93B714-8D15-49C1-9F1F-E5839879F63A [details] Type material Oct 1844, Fasc. II. 26, F. J. Lindheimer, Prairies between the Brazos and the Colorado, holotype GH, isotype MO? [details]