Erysiphe thesii L. Junell, (bastard toadflax mildew)


10 Jul 1999 at OSGR: SU67 in Oxon, England

Record Summaryon Bastard Toadflax
Found asFruitbody
Date10 July 1999
Associated organismThesium humifusum
OS grid refOSGR: SU67
Lat/Lon51° 30’ N, 1° 10’ W
Vice CountyOxon, VC no: 23
CountryEngland
Voucher10 Jul 1999[N]
(Please quote this in any queries about this record)

Notes:

First British record and new host record.

Conidial Powdery mildew with type A conidia, some staining and some not. Conidia 32-39/16.7µm.

Pointed out by Chris Raper.

Known from site for several years.

Chris estimated (17/7/99) <10% of plants heavily infected, but >75% were at least slightly infected.

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