Dryopteris rudis var. gradata C.Chr. Kungl. Svenska Vetenskapsakad. Handl. 16(2): 25. 1936

Nomenclatural References

• literature : Kungl. Svenska Vetenskapsakad. Handl. 16(2): 25, t.3, f.9-11. 1936 BHL link from IPNI metadata.
• person : Carl Christensen (1872-1942) Based on occurrence of standard abbreviation 'C.Chr.' in the authors string.
• database : IPNI record: 85277-2