Knight's Bengalensis Alba (China) [] I think this is the "White China rose" mentioned by Donald Beaton (1850):

"This White China rose had the good fortune to come into the world before they found out the way to give roses such hard names, and, like old gardeners, very few people care anything about it; in short, I do not know if the nurserymen grow it at all, it is so old; but this I do know, that they grow no China rose half so useful. It is in full flower every day from May to December, and late in the season it is the only white rose one can pick to make a variety in the glasses. In November the buds of it are as hard as acorns, and as pointed as a bayonet, and if it is wet weather, the out side row of petals look much faded, and nine persons out of ten would pass it as gone; but strip off the faded covering and you have the nicest white rose bud you ever saw, and it will keep ten days fresh in a dry warm room. All the autumn roses for house decoration ought to be cut before the buds are more than half blown; they will keep all the longer, and look as well if not better than if they were quite open; they escape the damp, and will open in the glasses."

Roses; Or, A Monograph of the Genus Rosa - Volume 2 (1828)
Henry Charles Andrews

Our drawing was made from plants in the Nursery of Mr. Knight, who first raised them in the year 1816 by importations received froma Bengal vessel, and called them Rosa Bengalensis rubra et alba. They are, however, only seminal varieties from the common China Rose. Their period of inflorescence is mostly during the summer and autumnal months; and when occasionally flowering under the influence of a cold atmosphere, the pale variety acquires such an accession of colour, that it appears a very different Rose from what it is when the sun's rays so far extract its colour, that it requires to be looked at in the shade to ascertain whether it is a white or a pale blush colour.