Website/Catalog  (1925)  Page(s) 40.  
 
Paeonia sinensis...Single-blooming...Insignis. Bright pink...1 piece M 2.-, 100 pieces M 180.-

Website/Catalog  (1924)  Page(s) 24.  
 
Single-blooming..Paeonia sinensis....Insignis, bright pink...2,-

Book  (1917)  Page(s) 225.  
 
Anomala....Varieties: Insignis (remarkable). A form of this is grown in gardens under the name of Peter Barr. Flowers magenta.

Book  (1907)  Page(s) 3.  
 
Peonia Anomala, Linn. .... Its varieties, Insignis, Peter Barr, Smoutti and Intermedia are now recognized, being more distinct in the character of foliage than otherwise. 

Magazine  (1847)  Page(s) 166.  
 
Paeonia albiflora insignis.—This also is a large flowering variety, with conspicuous anthers. The flowers are single, of a delicate peach colour, and stand well above the foliage.