Book  (1911)  Page(s) 87.  Includes photo(s).
 
29 - Rosa chinensis, var. Grandiflora Hort.
Rosa chinensis var. grandiflora: inter formas hujus speciei distincta floribus magnis, albis, simplicibus.

This is a fine form of Rosa chinensis Jacq., with very large shell-pink and white flowers, and approaches most nearly to Rosa gigantea of Collett. All attempts to trace the origin of this beautiful Rose have failed, for no mention of it has been made in any of the books on Roses, and it has not been figured. The only specimen known was found growing in Canon Ellacombe's garden at Bitton in Gloucestershire, and it is through his generosity that the plant has lately been distributed.

Magazine  (1 Mar 1820)  Page(s) Annex, p. 154.  
 
For Friends of Botany.
In the Grand-Ducal Glasshouses at Belvedere in Weimar, following plants are now blooming (February 25, 1820)....

Rosa Chinensis grandiflora, large-bloomed Chinese Rose.....(Motherland) China