Sagittaria heterophylla var. rigida (Pursh) Engelm. in A.Gray Manual , ed. 2: 439 (1856)

Nomenclatural References

• literature : Manual (Gray), ed. 2. 439. 1856 BHL link from IPNI metadata.
• person : Asa Gray (1810-1888) Based on occurrence of standard abbreviation 'A.Gray' in the authors string.
• person : Frederick Traugott Pursh (1774-1820) Based on occurrence of standard abbreviation 'Pursh' in the authors string.
• person : George Engelmann (1809-1884) Based on occurrence of standard abbreviation 'Engelm.' in the authors string.
• database : IPNI record: 225271-2
• database : The Plant List v1.1 record kew-292774
• database : The Plant List version 1.0, record: kew-292774