William Prince 1844
243 White American. P. - cup. - White, very vigorous, has been trained 20 feet in ht.

William Prince 1846-1847
273 White, or Odorata alba,
274 White American. P.

I included two items to be clear that the White American was distinct from Odorata alba. Also, the P indicates that White American had "long flexible shoots adapted for rose pillars, arbors, or to train against the sides of buildings, &c."

Or were they the same, despite the two numbers?