Transcript of Dr Richardson's Directions for Welch Plants to Dr John Jac Dillenius. Plants observed in a journey from Gloucestershire and Shropshire by John Jacobus Dillenius in company with Mr Samuel Brewer A.D. 1726 (pp.16-47), Mr Brewer's diary 1726-7 (pp.48-127). From the original preserved in Oxford.
Interleaved and annotated copy of John Storrie, The flora of Cardiff (1886), and The London catalogue of British plants (1877), with miscellaneous letters, notes and cuttings of Thomas Henry Thomas, Arlunydd Penygarn (1839-1915). Possibly presented by A. H. Trow. Drawings by A. H. Trow for an article in the Annals of Botany, vol. XIII.