Original Questions: Does anyone know the number of plant species/genera/families (including flowering plants and ferns) in UK? Here are the replies: (1) the answer depends on whether you include ornamental plants, neophytes, microspecies, mosses and algae, and the vegetation of the Channel Islands; and finally on how you split the genera and families. The following links may get you closer to the answer: http://www.nhm.ac.uk/nature-online/life/plants-fungi/postcode-plants/checklist-british- plants.html http://jncc.defra.gov.uk/default.aspx?page=1739 Kind regards, Martin (2) Deb Rabinowitz's Seven Forms of Rarity paper categorized the entire British flora, so that might be a good starting place. Carola A. Haas (3) Evidently the new edition of the British flora by Stace covers 4800 taxa, so that is perhaps an estimate of species level taxa. New flora of the British Isles, 3rd ed. by Clive A. Stace. Cambridge: Cambridge University Press, 2010.xxxiv+1232 pp. Paperback with plastic cover. ISBN 978-0-521-70772-5. £50. Priyantha ------------------------------------------------------------------- At first, I thought it should be an easy question. However, it is not, especially for the number of taxa above species. I have checked the websites above and several other websites. To my surprise, the number of british native vascular plants is small, compared to the number of exotic and introduced ones, or compared to a southern province in China. Thanks for your kindly help. Xiaohua ------------------ Xiaohua Dai, Dr. Mobile: +86 137 6398 8183 Publications: http://www.researcherid.com/rid/B-2810-2008 Chinese Leafmining Insects: http://blog.sciencenet.cn/?54961 School of Life and Environmental Sciences GanNan Normal University Ganzhou, Jiangxi Province, China Zip Code: 341000 ****Signature in Chinese**** 戴小华 博士、副教授 江西省赣州市 赣南师范学院生命与环境科学学院 邮政编码：341000 手机号码：13763988183 中国潜叶昆虫：http://blog.sciencenet.cn/?54961 我的SCI文章： http://www.researcherid.com/rid/B-2810-2008
