]> Example of Name Published: Conophytum tantillum subsp. amicorum S. A. Hammer & Barnhill in Bradleya 15: 42. 1997. "US photographer & horticulturalist; worked with SA Hammer in Belen, New Mex, & explored w him in RSA 1996; manages nursery at Fullerton Arboretum in s California" (vide C. J. Staples). Botany Barnhill, Christopher Mattingly Barnhill, Christopher Mattingly C. M. Barnhill Barnhill Christopher Barnhill Christopher Mattingly Barnhill 1969