| Inadvertent error (orth. inval.: orth. null.) [ICZN, 1999: Art. 32.5.1] |  | Ref: 
				
					E. Fries, 1821a. Syst. Mycol. 1: XLIX, L.
				 [implicit] | 
		
			| No clear indication of rank [ICBN/ICN, 2018: Art. 37.3 (<1953)] |  | Ref: 
					
						E. Fries, 1821a. Syst. Mycol. 1: L.
					 [inferred] | 
			
				| Incorrect original spelling (orth. inval: orth. null./imperf./neg.) [ICZN, 1999: Arts. 32.4-32.5] |  | Ref: 
						
							S.J. Brands (comp.), 1989-present. Syst. Nat. 2000: 27 Sep 2019. |