Helianthus debilis subsp. praecox (Engelm. & A.Gray) Heiser Madroño 13: 160 (1956)

Nomenclatural References

• literature : Madroño 13: 160. 1956 BHL link from IPNI metadata.
• person : Asa Gray (1810-1888) Based on occurrence of standard abbreviation 'A.Gray' in the authors string.
• person : Charles Bixler Heiser (1920-2010) Based on occurrence of standard abbreviation 'Heiser' in the authors string.
• person : George Engelmann (1809-1884) Based on occurrence of standard abbreviation 'Engelm.' in the authors string.
• database : IPNI record: 119094-2
• database : The Plant List v1.1 record gcc-63762
• database : The Plant List version 1.0, record: gcc-63762