Book  (2005)  Page(s) 231.  
 
By 1817 there were three new imports [from China]: 'Cruenta', a beautiful and tender crimson-purple rose that reached England about 1810; 'Indica Purpurea' or 'Blue Rose', which faded from reddish purple to puce; and 'Animating', described as a pinkish red with a Tea scent and with leaves and flowers like 'Old Blush'...

Book  (3 Jan 2001)  Page(s) 94.  
 
[Vibert wrote in 1826:] the fruits of 'Sanguin' -- and indeed of the [purple China roses] -- come quite close to those of the Gallica...

Book  (1975)  Page(s) 44.  
 
Tea-Scented Roses A Survey
L. ARTHUR WYATT
In order to obtain red Teas, hybridists had to look to the closely related Chinas. An old cultivar, not at all well known in England named 'Sanguine' (1835) was apparently the main source for most of the coppery tinted and bright reds.

Book  (1936)  Page(s) 643.  
 
Sanguine (china) Laffay before 1835; vivid velvety purple-crimson, pistils white, medium size, very double, globular, stems, branches and foliage purple, growth 3/10, broad. Imported 1810 from China.

Website/Catalog  (1921)  Page(s) 34.  
 
Roses.
Pourpre Sanguine, brilliant scarlet; class: China; habit of growth: moderate.

Website/Catalog  (1914)  Page(s) 38.  
 
China Roses.
Pruning. — [No pruning necessary except to remove the past season's flower stems.]
Pourpre Sanguine... moderately vigorous. Brilliant scarlet; very fine.

Book  (1902)  Page(s) 99.  
 
R. Chinensis. No. 2890 Sanguin (Laffay), pourpre

Book  (1899)  Page(s) 160.  
 
Sanguin, Bengale, Laffay, pourpre
Sanguin, Bengale, pourpre, dans les Roses de Redouté

Book  (1885)  Page(s) Vol. II, p. 279.  
 
Bengale. Sanguin. Laffay. Arbuste faible, étalé; rameaux, feuilles et pédoncules très pourpres; fleur moyenne, un peu globuleuse, très double, veloutée, d'un pourpre cramoisi très vif, à pétales concaves, ayant l'onglet blanc; 20 à 35 styles.

Book  (1874)  Page(s) 105.  
 
NOMENCLATURE DES VARIÉTÉS MODERNES.
Rosiers Bengales.
Sanguin, fleur moyenne, pleine, rouge.