Article (magazine)  (Jan 1955)  Page(s) 12.  
 
Robert Fortune, the great explorer of the Royal Horticultural Society, made four trips to China and introduced many fine plants to England. In 1846, he brought twenty-five of the finest tree peonies ever to come out of China. Among these were 'Atrosanguinea,' 'Berenice,' 'Bijou de Chusan,' 'Dr. Bowring,' 'Globosa,' 'Glory of Shanghai,' 'Lord Macartney,' 'Pride of Hongkong,' 'Robert Fortune,' 'Samarang,' and 'Zenobia.' These were enthusiastically received and quickly propagated, so that both British and continental nurseries cataloged them in some quantity in the 1860's.

Book  (1928)  Page(s) 248.  
 
Tree Peony Check List
* Atrosanguinea. (China, Fortune, 1846.) A. Dessert 1902; Barbier & Co. 1900; Louis Paillet 1889; V. Lemoine 1904; Louis Van Houtte 1873; Old Farm Nursery 1924; E. H. Krelage 1867.

*Prseumed to be in commerce, 1927.

Book  (1907)  Page(s) 29.  
 
203. ATROSANGUINEA; P. moutan....(Fortune, 1846)
(1) 1849, Journal Hort. Soc. Vol. 4, p. 225.
(2) 1850, Annals of Hort. p. 348.
(3) 1885, The Garden Vol. 27, p. 33.
(4) Cornell Plot No. 91.

Book  (1898)  Page(s) 106.  
 
La Pivoine en arbre a fourni à la culture un grand nombre de variétés horticoles, les unes obtenues en Chine, et d'autres en Europe...Quant aux variétés horticoles, elles sont si nombreuses que nous ne pouvons citer que les plus remarquables.
Principales Variétés Horticoles
Atrosanguinea (Chine).—Grande fleur double, écarlate vif.

Magazine  (30 Oct 1897)  Page(s) 411.  
 
Les Pivoines.—M. Ernest H. Krelage publie, dans le « Tijdschrift voor Tuinbouw » une intéressante étude sur les Pivoines, dont la maison Krelage et fils, de Haarlem, possède une collection renommée. [...] Comme bonnes variétés, il mentionne:
atrosanguinea, pourpre sanguin, très grande fleur bien pleine...

Magazine  (10 Jan 1885)  Page(s) 33.  
 
Tree Pæonies.
By way of reply to Mr. Frank Miles, who seeks information respecting Tree Pæonies, I send you herewith the names of the original Chinese varieties, all or most of which were introduced by Fortune:
Atrosanguinea... 

Website/Catalog  (1862)  Page(s) 31.  
 
Sin prachtvolles Sortiment von Pæonia Moutan (strauchartigen Pfingstrosen).
Pæonia Moutan atrosanguinea (Fortune), groß, gefüllt, prachtvoll dunkelcarmoisin mit blutrothen Schimmer...5 fl.

Website/Catalog  (1861)  Page(s) 58.  
 
New Chinese Tree Paeonias introduced by Mr. R. Fortune.
The followng magnificent tree-like peonies surpass by the gloss of their colours and the size of their blooms all variety known to-date and distinguish themselves namely also by their partly pure white, partly dark red colouring from all known varieties.
61. Atrosanguinea ...3 Prussian Thaler

Website/Catalog  (1860)  Page(s) 85.  
 
Paeonia Arborea.
Varietäten aus China, von Fortune eingeführt.
New Chinese Tree Paeonias introduced by Mr. R. Fortune.
60. Atrosanguinea...

Website/Catalog  (1860)  Page(s) 28.  
 
Chinese Tree Pæonies. — Pæonia Moutan.
These are the most splendid and showy of all flowering shrubs, and among the most rare.
The flowers are mostly fragrant, and all are double, unless denoted otherwise.  They are perfectly hardy, and will withstand the winters of our most northern States and the Canadas.  They bloom in May, ten to fifteen days before the Chinese Herbaceous varieties.
The following are distinct new Chinese Varieties obtained by Robert Fortune; and, as they are the most rare and valuable varieties, the prices will be regulated according to their size.
122.  Atrosanguinea.