Physocarpus alternans subsp. annulatus J.T.Howell Proc. Calif. Acad. Sci. , ser. 4, 20: 133 (1931)

Nomenclatural References

• person : John Thomas Howell (1903-1994) Based on occurrence of standard abbreviation 'J.T.Howell' in the authors string.
• database : IPNI record: 195608-2