The rose in commerce in the States is probably the rose re-found by Phillip Robinson of Vintage Gardens. The rose sold in Europe under this name doesn't climb and is probably a reversion to Hermosa. Robinson's rose is the only one I have seen that appears correct.
Per the paper linked below (in Table 4, beginning on the paper's page 28), this rose is triploid. I am cross-posting this comment on all others mentioned which do not already have their ploidies mentioned in their descriptions.
