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DOI: http://dx.doi.org/10.11646/phytotaxa.261.3.1

The number of known plants species in the world and its annual increase

MAARTEN J.M. CHRISTENHUSZ, JAMES W. BYNG

Abstract


We have counted the currently known, described and accepted number of plant species as ca 374,000, of which approximately 308,312 are vascular plants, with 295,383 flowering plants (angiosperms; monocots: 74,273; eudicots: 210,008). Global numbers of smaller plant groups are as follows: algae ca 44,000, liverworts ca 9,000, hornworts ca 225, mosses 12,700, lycopods 1,290, ferns 10,560 and gymnosperms 1,079. Phytotaxa is currently contributing more than a quarter of the ca 2000 species that are described every year, showing that it has become a major contributor to the dissemination of new species discovery. However, the rate of discovery is slowing down, due to reduction in financial and scientific support for fundamental natural history studies.


Keywords


Total number of vascular plants, species, new taxa, annual increase, contribution of new species by Phytotaxa, General

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References


APG (2016) An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV. Botanical Journal of the Linnean Society 181: 1–20.

http://dx.doi.org/10.1111/boj.12385

Bebber, D.P., Carine, M.A., Wood, J.R.I., Wortley, A.H., Harris, D.J., Prance, G.T., Davidse, G., Paige, J., Pennington, T.D., Robson, N.K.B. & Scotland, R.W. (2010) Herbaria are a major frontier for species discovery. Proceedings of the National Academy of Sciences of the United States of America 170: 22169–22171.

http://dx.doi.org/10.1073/pnas.1011841108

Bentham, G. & Hooker, J.D. (1862–1883) Genera plantarum, vols 1–3. Black, Pamplin, Reeve, Williams & Norgate, London.

Boissier, P.E. (1843–1859) Diagnoses plantarum orientalium novarum, vols. 1–3. Herrmann, Leipzig.

Byng, J.W. (2014) The flowering plants handbook. Plant Gateway, Hertford.

Byng, J.W. (2015) The gymnosperms handbook. Plant Gateway, Hertford.

Byng, J.W. (in press) The flowering plants handbook. 2nd edition. Plant Gateway, Hertford.

Candolle, A.P. de (1824–1873) Prodromus Systematis Naturalis Regni Vegetabilis, vols. 1–17. Treuttel & Würtz, Paris.

Chapman, A.D. (2009) Numbers of Living Species in Australia and the World, 2nd edition. A Report for the Australian Biological Resources Study September 2009. Australian Biodiversity Information Services, Toowoomba. Available from: http://www.environment.gov.au/node/13866 (accessed 5 March 2016)

Chase, M.W., Cameron, K.M., Freudenstein, J.V., Pridgeon, A.M., Salazar, G., Van den Berg, C. & Schuiteman, A. (2015) An updated classification of Orchidaceae. Botanical Journal of the Linnean Society 177: 151–174.

http://dx.doi.org/10.1111/boj.12234

Chen, X., He, H. & Zhang, L.B. (2015) A monograph of the Anisophylleaceae (Cucurbitales) with description of 18 new species of Anisophyllea. Phytotaxa 229 (1): 1–189.

http://dx.doi.org/10.11646/phytotaxa.229.1.1

Christenhusz, M.J.M. (2015) New combinations in Drynaria (Polypodiaceae subfam. Polypodioideae). Phytotaxa 230 (3): 299–300.

http://dx.doi.org/10.11646/phytotaxa.230.3.11

Christenhusz, M.J.M. & Chase, M.W. (2014) Trends and concepts in fern classification. Annals of Botany 113: 571–594.

http://dx.doi.org/10.1093/aob/mct299

Christenhusz, M.J.M., Baker, W., Chase, M.W., Fay, M.F., Lehtonen, S., Van Ee, B.W., Von Konrat, M.J., Lumbsch, T., Renzaglia, K.S., Shaw, J., Williams, D.M. & Zhang, Z.-Q. (2011) The first anniversary of Phytotaxa in the International Year of Biodiversity. Phytotaxa 15: 1–8.

Christenhusz, M.J.M., Chase, M.W., Fay, M.F. Lumbsch, T., Monro, A., Vorontsova, M. & Zhang, Z.Q. (2009) A new international journal for rapid publication of botanical taxonomy. Phytotaxa 1: 1–2.

http://dx.doi.org/10.11646/phytotaxa.1.1.1

Christenhusz, M.J.M., Fay, M.F. & Chase, M.W. (in press) Plants of the world. An illustrated encyclopaedia of vascular plant families. Kew Publishing, Richmond.

Christenhusz, M.J.M., Reveal, J.L., Farjon, A., Gardner, M.F., Mill, R.R. & Chase, M.W. (2011) A new classification and linear sequence of extant gymnosperms. Phytotaxa 19: 55–70.

http://dx.doi.org/10.11646/phytotaxa.19.1.3

Cox, C.J., Goffinet, B., Wickett, N.J., Boles, S.B. & Shaw, J. (2010) Moss diversity: a molecular phylogenetic analysis of genera. Phytotaxa 9: 175–195.

http://dx.doi.org/10.11646/phytotaxa.9.1.10

Crandall-Stotler, B., Stotler, R.E. & Long, D.G. (2009) Morphology and classification of the Marchantiophyta. In: Shaw, A.J. & Goffinet, B. (Eds.) Bryophyte Biology. Cambridge University Press, Cambridge, pp. 21–70.

Crosby, M.R., Magill, R.E., Allen, B. & He, S. (1999) Checklist of mosses. Missouri Botanical Gardens, St. Louis.

Fernandes-Júnior, A.J. & Esteves, G.L. (2016) Three new species of Peltaea (Malvaceae, Malvoideae) from the cerrado of Brazil. Phytotaxa 255 (1): 75–82.

http://dx.doi.org/10.11646/phytotaxa.255.1.7

Funk, V.A., Susanna, A., Stuessy, T.F. & Bayer, R.J. (Eds.) (2009) Systematics, evolution, and biogeography of Compositae. International Association for Plant Taxonomy, Vienna.

Guiry, M.D. (2012) How many species of algae are there? Journal of Phycology 48: 1057–1063.

http://dx.doi.org/10.1111/j.1529-8817.2012.01222.x

IPNI (2016) The International Plant Name Index. Royal Botanic Gardens, Kew. Available from: http://www.ipni.org (accessed 6 March 2016)

IUCN (2015) The IUCN red list of threatened species. Version 2015-4. Available from: http://www.iucnredlist.org (accessed 5 March 2016)

Joppa, L.N., Roberts, D.L. & Pimm, S.L. (2011a) How many species of flowering plants are there? Proceedings of the Royal Society of London B: Biological Sciences 278: 554–559.

http://dx.doi.org/10.1098/rspb.2010.1004

Joppa, L.N., Roberts, D.L., Myers, N. & Pimm, S.L. (2011b) Biodiversity hotspots house most undiscovered plant species. Proceedings of the National Academy of Sciences of the U.S.A. 108: 13171–13176.

http://dx.doi.org/10.1073/pnas.1109389108

Kuntze, O. (1891–1898) Revisio generum plantarum, vols. 1–3. A. Felix, Leipzig.

Lindon, H., Gardiner, L.M., Brady, A. & Vorontsova, M.S. (2015) Fewer than three percent of land plants named by women: author gender over 260 years. Taxon 64: 209–215.

http://dx.doi.org/10.12705/642.4

Linnaeus, C. (1753) Species plantarum. L. Salvius, Stockholm.

Martius, C.F.P. von (1840–1906) Flora Brasiliensis, vols. 1–15. R. Oldenbourg, Munich & Leipzig.

Miquel, F.A.W. (1855–1859) Flora van Nederlandsch Indië, vols. 1–3. C.G. van der Post, Amsterdam.

Ortiz, O.O., Baldini, R.M., Berguido, G. & Croat, T.B. (2016) New species of Anthurium (Araceae) from Chucantiì Nature Reserve, eastern Panama. Phytotaxa 255 (1): 47–56.

http://dx.doi.org/10.11646/phytotaxa.255.1.4

Otto, R. & Verloove, F. (2016) A new natural hybrid in Argemone (Papaveraceae). Phytotaxa 255 (1): 57–65.

http://dx.doi.org/10.11646/phytotaxa.255.1.5

Payne, A. (2016) Why do taxonomists write the meanest obituaries? The open nature of the science of classification virtually guarantees fights. Nautilus 35, chapter 2: Classifying. Available from: http://nautil.us/issue/35/boundaries/why-do-taxonomists-write-the-meanest-obituaries

Pimm, S.L., & Joppa, L.N. (2015) How many plant species are there, where are they, and at what rate are they going extinct? Annals of the Missouri Botanical Garden 100: 170–176.

http://dx.doi.org/10.3417/2012018

Siebold, P.F.B. von & Zuccarini, J.G. (1837–1870) Flora Japonica, vols. 1–2. Published by the author, Leiden.

Sofiyanti, N., Mat-Salleh, K., Mahmud, K., Mazlan, N.Z. Hasein, M.R.A., Burslem, D.F.R.P. (2016) Rafflesia parvimaculata (Rafflesiaceae), a new species of Rafflesia from Peninsular Malaysia. Phytotaxa 253 (3): 207–213.

http://dx.doi.org/10.11646/phytotaxa.253.3.4

Steudel, E.G. von (1840–1841) Nomenclator botanicus, ed. 2, vols. 1–2. J. Cotta, Stuttgart & Tübingen.

Villarreal, J.C., Cargill, D.C., Hagborg, A., Söderström, L. & Renzaglia K.S. (2010) A synthesis of hornwort diversity: patterns, causes and future work. Phytotaxa 9 (1): 150–166.

http://dx.doi.org/10.11646/phytotaxa.9.1.8

WCSP (2016) World checklist of selected plant families. Royal Botanic Gardens, Kew. Available from: http://apps.kew.org/wcsp/ (accessed 5 March 2016)

Zhang, Z.-Q., Christenhusz, M.J.M., Esser, H.-J., Chase, M.W., Vorontsova, M.S., Lindon, H., Monro, A. & Lumbsch, H.T. (2014) The making of the world’s largest journal in systematic botany. Phytotaxa 191 (1): 1–9.

http://dx.doi.org/10.11646/phytotaxa.191.1.1


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