• Basye's Amphidiploid
• The Probable Amphidiploid

13 favorite votes.  

Bred by Dr. Robert E. Basye (United States, before 1967).

Shrub.  

Pink.  None to mild fragrance.  Average diameter 3".  Medium, single (4-8 petals) bloom form.  Once-blooming spring or summer.  

Armed with thorns / prickles.  

USDA zone 6b through 9b (default).  Disease susceptibility: very disease resistant, very blackspot resistant..  

Tetraploid

According to Kim Rupert, Dr. Basye called this rose 'The Probable Amphidiploid'. It's once blooming, enormous, extremely prickly, extremely disease resistant, and wonderfully fertile.