L.F. LippertDepartment of Botany and Plant Sciences, University of California, Riverside, CA 92521
Search for other papers by L.F. Lippert in Google ScholarClose
and
M. O. Hall
M. O. HallDepartment of Botany and Plant Sciences, University of California, Riverside, CA 92521
Search for other papers by M. O. Hall in Google ScholarClose
Contributor Notes
Received for publication July 7, 1980.
The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.