Book  (1907)  Page(s) 20.  
 
102. ALGERIA; P.
(1) 1888, Garden and Forest, Vol. 1, p. 224.

Magazine  (4 Jul 1888)  Page(s) 224.  
 
June Notes from the Flower Garden.
Single-flowered Pæonies, although much more beautiful [than double-flowered ones], are less often seen, and gardeners are only just beginning to appreciate them and to realize that among them are some of the very finest of all hardy herbaceous plants.
Algeria has dark purple-red, satiny flowers, and Gordens, very handsome, large, spreading, dark purple-red flowers.
[...] I do not pretend to vouch for these names, which are those under which the plants were imported from Europe.

NB: Possibly the correct names were Kelway's single-flowered varieties, 'Aglaia' and 'Gordonius' with similar names and color descriptions.