Book  (1907)  Page(s) 14.  
 
14. ACACUS; P.... (Kelway)
(1) 1886, Kelway's Cat. Fewkes' MSS.

Magazine  (17 Nov 1888)  Page(s) 465.  
 
The following is a list of some of the admirable herbaceous varieties that have been exhbited by Messrs. Kelway during the past two seasons. In a choice selection like this we have the Pæony in its fullest splendour. Not only is there a delightful range of colour, but we have flowers of various characters, and some of the largest size and beauty.
The finest of the double varieties are:
Acacus.—This is of a bright rosy lilac colour.