For additional info on the seed lists, see: 'Guide to the plant species descriptions published in seed lists from Botanic Gardens for the period 1800 - 1900' (http://seedlists.naturalis.nl) and Kew library (Seed lists, Grenoble) eg. separately paginated 'Extrait' from the 1849 list. Title abbreviation follows BPH-2 (1: 557. 2004; pers. comm. from BPH)