Phytophthora infestans (Montagne) de Bary, 1876

Peronospora arborescens (Berkeley) de Bary, 1863

Chromista, Oomycota, Oomycetes, Peronosporales

on Solanaceae

Phytophthora infestans on Lycium barbarum

Lycium barbarum, France, dép. Nord, Grand-Fort-Philippe © Sébastien Carbonelle

Phytophthora infestans on Lycopersicon esculentum

Lycopersicon esculentum, Dronten © Arnold Grosscurt


white, velvet cover on alle parts of the plant, even underground. Attacked parts turn brown and wither. The conidia (in fact, sporangia) are ovoid or lemon-shaped, with an indistinct apical papilla. They are formed at the tip of seemingly undifferentiated hyphae, that here and there show irregular swellings.


Solanaceae, oligophagous

Lycium barbarum; Lycopersicon esculentum; Petunia x hybrida; Solanum dulcamara, melongana, nigrum, physalifolium, tuberosum.


cause of the dreaded potato blight,


Brandenburger (1965a), Göker, Voglmayr, Riethmüller, Weiß & Oberwinkler (2003a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Mułenko, Piątek, Wołczańska ao (2010a).