Breeding stock only

1 favorite vote.  

Bred by Natalie Anderson (United States, before 1990). Bred by Dr. Robert E. Basye (United States, before 1990). Bred by David H. Byrne (United States, before 1990).

Unknown.  

Single (4-8 petals) bloom form.  Once-blooming spring or summer.  

Disease susceptibility: disease resistant, blackspot resistant.  

Tetraploid

90-1 (R. wichurana-thornless x R. banksiae) was created by Dr. Robert Basye and is diploid.
90-1C is the amphidiploid version of 90-1 that was doubled by Yan Ma.