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| Record Summary | Single hawthorn leaf with aecia |
| Found as | Aecia (I) |
| Date | 30 May 2009 |
| Associated organism | Crataegus monogyna |
| OS grid ref | OSGR: SU88 |
| Lat/Lon | 51° 30’ N, 0° 50’ W |
| Vice County | Bucks, VC no: 24 |
| Country | England |
| Voucher | 30 May 2009[A] (Please quote this in any queries about this record) |
Notes:
Reddish brown, yellow-bordered spot with black pycnia on upper surface of leaf; bearing hypophyllous, pale brown, cylindrical aecia below; peridium only shortly lacerate.
Aeciospores: pale yellow, subspherical, thick-walled (2-3µm), verruculose under oil immersion, 23-25/21µm.
Peridial cells: hyaline, with transversely elongated warts and ridges.
The following literature was used to identify this find:
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