Article (magazine)  (Jan 1955)  Page(s) 13.  
 
There were also hundreds of lilac pinks, magenta. pinks and plain magentas, most of which were very unattractive. Many closely resembled Banksi. Typical varieties were 'Archduc Ludovico,' 'Athlete,' 'Beaute de Twickel,' 'Jules PirIot,' 'La Ville de St. Denis,' 'Morris,' 'Princess Louise,' 'Reine Amelie,' 'Reine des Fleurs,' 'Triomphe de Vandermaelen,' and 'van Houttei.' All these varieties proved, in Holland and France, easy to propagate in comparison with the later introduced Japanese varieties. Which varieties bearing European names were actually raised from seed in Europe and which were Chinese varieties renamed is not too definitely established.

Book  (1928)  Page(s) 261.  
 

Tree Peony Check List

*Morris. (Burdin, 1873.) E. H. Krelage 1905; Ruitton & Rivière 1906; Louis Paillet 1889; V. Lemoine 1900; Louis Van Houtte 1873.

* Presumed to be in commerce, 1927.

Book  (1907)  Page(s) 152.  
 

1733. MORRIS; P. moutan.

(1) 1899, L. Paillet's Cat.

Website/Catalog  (1873)  Page(s) 232.  
 

Pivoines en Arbre. Pæonia Moutan.

450. Moris...2 Fr. 50 C.

Grands pétales roses, centre cerise.