A volume (watermark 1801) written probably in the same hand as Cwrtmawr MS 531C containing descriptive notes on British plants based on [William] Withering, An arrangement of British plants. The writer has subsequently marked those which are included by W. Bingley in 'A Catalogue of the more uncommon Welsh plants, with their places of growth' (see W. Bingley, A Tour round North Wales, performed during the summer of 1798 (London, 1800), Vol II, p. 371), and sometimes the habitat given by Bingley is inserted. On p. 42 is a list of 'Plants mentioned in Mr Arthur Aikin's Tour thro' North Wales in ye Summer 1796.' There is an index at the beginning of the volume but this is rather confusing as the pages are numbered in two consecutive series, pp. 1-44 and 1-31.