BioImages: The Virtual Field-Guide (UK)

Melampsoridium hiratsukanum S. Ito ex Hirats. f. (Alder Rust)

Date 27 September 2007
OS grid ref SU56
Lat/Lon 51° 20' N, 1° 10' W
Location Vice County: Berks, VC22, England
Voucher 27/09/2007[A]
(Please quote this in any queries about this record)
Stage or state Uredia (II)
Record Summary rust on underside of Alder leaves
Associated organism: on underside live leaf of Alnus glutinosa
Identification Notes: Dusting of orange hypophyllous uredia covering large parts of the undersides of many leaves. Infected leaves curl upwards.

Uredospores: oblong to clavate, echinulate, 24.5-34/12.5-14µm, echinulate, except the broad end is smooth.

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