I had a brief stop in SN22C and SN22D today on my way back from Pembs. Both tetrads had ca30 previous records, both produced about 40 today, and both were frustratingly typical of the 'Dairy Zone'. Anyway, a surprise find on the roots of an old Ash in a field corner was Leskea polycarpa, which is in the Atlas with a pre-1950 dot for SN22.
Here's the out of date book. How can anyone resist it!