is a Phytophthora tentaculata plant pathogen that causes root and stalk rot. It was first isolated in 1993 in a nursery in Germany infecting , Chrysanthemum and Verbena . It has since been found infecting a Delphinium ajacis Verbena in Majorca, Spain in June 2001 but was thought to be restricted to nurseries in Germany and the Netherlands. Other species have since been found to be infected,  (Lavender cotton) in Santolina chamaecyparissus Spain in 2004,  in Gerbera jamesonii Italy 2006, and  in Aucklandia lappa China in 2008. 
References [ edit ]
^ Moralejo, E; M. Puig; W.A. Man in't Veld (29 Jun 2004). "First report of Phytophthora tentaculata on Verbena sp. in Spain". The British Society for Plant Pathology . Retrieved . 31 May 2009
^ Álvarez, L. A.; Pérez-Sierra, A.; León, M.; Armengol, J.; García-Jiménez, J. "Lavender cotton root rot: a new host of Phytophthora tentaculata found in Spain". American Phytopathological Society. doi: 10.1094/PD-90-0523A.
^ Cristinzio, G; Camele, I.; Marcone, C (February 2006). "First report of Phytophthora tentaculata on gerbera in Italy (Campania)". AGRIS . Retrieved . 31 May 2009
^ Meng, J; Y. C. Wang (September 2008). "First Report of Stalk Rot Caused by Phytophthora tentaculata on Aucklandia lappa in China". Plant Disease. The American Phytopathological Society. 92 (9): 1365. doi: 10.1094/PDIS-92-9-1365B . Retrieved . 31 May 2009