Origin: in Davis, Calif., by W.L. Howard, California Agr. Expt. Sta. Introd. about 1940. Open-pollinated seedling of Marianna, being a sibling of Marianna 2624; selected in 1926; Marianna is a cultivar of, apparently, Prunus cerasifera × P. munsoniana (?); however, some horticulturists consider Marianna as simply P. cerasifera. Tree: Fruit: not commercial. Used only as a clonal rootstock: resistant to root-knot nematode; not as resistant to oak root fungus as Marianna 2624; grows vigorously; propagated vegetatively by hardwood cuttings.
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