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Pierce's Disease
Research Updates

piercesdisease.cdfa.ca.gov

What is Pierce's Disease?

Pierce's Disease is a bacterial infection, which is spread by bugs that feed on grapevines, particularly the "glassy winged sharpshooter." Grapevines that become infected with PD can quickly become sick and die.

glassy-winged sharpshooter

Distinction between Vitis blancoi and V. cinerea var. tomentosa (Vitaceae)

  • Author(s): Comeaux, Barry; Lu, Jiang;
  • Abstract: Vitis blancoi Munson as treated by Munson included two, unrelated taxa with separate distributions. Plants from southern Mexico are treated as V. blancoi Munson emend. Comeaux, and are assigned to series Occidentales Munson. The northern group of plants from northern Mexico and extreme southern Texas belong to series Cinerascentes Planchon, and are here designated as V. cinerea (Engelm. in Gray) Engelm. ex Millardet var. tomentosa (Planchon) Comeaux. Revised descriptions and specimen citations are provided.
  • Publication Date: Feb 2000
  • Journal: Sida Contributions To Botany

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