Book  (1907)  Page(s) 120.  
 
1316. KAISER; P. albiflora.
(1) 1899, Peter Barr & Son Cat.

Magazine  (15 Jun 1895)  Page(s) 668.  
 
Messrs. Barr & Son's Paeonies.
Single Flowered Sorts.
Others which well deserve honourable mention, but upon the merits of which space forbids us to descant, are Duchess of Portland, soft pink, frilled white; Gertrude, brilliant rose pink, of exceptionally fine form; Beauty, bright rose, shading to pink; Rosy Dawn, large snow-white flowers, tinged blush upon first opening; and Kaiser, brilliant rose.