Folia Geobotanica

, Volume 33, Issue 4, pp 391–414 | Cite as

A revision ofTaraxacum sect.Piesis (Compositae)

Article

Abstract

On the basis of allozyme and cultivation data, and of additional herbarium material, a taxonomic and nomenclatural revision ofTaraxacum sect.PiesisA.J. Richards exKirschner etŠtěpánek is provided. The section is made up of halophilous, sexually reproducing taxa. InT. stenocephalumBoiss. etKotschy,T. pindicumKirschner etŠtěpánek, sp. nov., andT. perenneKirschner etŠtěpánek, sp. nov., a tetraploid chromosome number has been recorded, representing the only known case of sexuality at the tetraploid level in the genus. The complex ofT. stenocephalum, includes some geographically and morphologically extreme populations treated as subspecies: subsp.gumusanicum (Soest)Kirschner etŠtěpánek, comb. nov., subsp.magnumKirschner etŠtěpánek, subsp. nov., and subsp.daralagesicum (Schischk.)Kirschner etŠtěpánek, comb. nov. In addition toT. bessarabicum (Hornem.)Hand.-Mazz., a widely distributed Eurasian species,T. stenocephalum, a complex centred in Transcaucasia and Anatolia, andT. pachypodumH. Lindb., a North African endemic, four new species are described:T. salsumKirschner etŠtěpánek, sp. nov., a diploid endemic confined to E Crimea,T. perenneKirschner etŠtěpánek, sp. nov., a tetraploid sexual species known only from SW Crimea,T. pindicumKirschner etŠtěpánek, sp. nov., a remarkable tetraploid endemic to the Pindos Mts., Greece, andT. salsitatisKirschner, Štěpänek etYirdirimli, sp. nov., an Anatolian diploid species. Furthermore, a hybrid betweenT. salsum andT. bessarabicum from Crimea (documented on the basis of allozyme data elsewhere) is given a binomial,T. xmesohalobiumKirschner etŠtěpánek, nothosp. nov.

Keywords

Asteraceae Lactuceae Taraxacum Taxonomy 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Arevshatyan I.G. (1973): Chisla khromosom i razmeri pyl’tsevych zeren vidov rodaTaraxacum Weber, proizrastayushchikh v Armyanskoi SSR (Chromosome numbers and pollen size inTaraxacum species occurring in Armenia).Biol. Zhurn. Armenii 26(3): 38–44.Google Scholar
  2. Burtt Davy J. (1935):Taraxacum magellanicumComm. in South Africa.J. S. African Bot. 1: 153–154.Google Scholar
  3. Doll R. (1977): NeueTaraxacum-Sippen aus dem Kaukasus.Feddes Repert. 88: 257–264.CrossRefGoogle Scholar
  4. Emberger L. & Maire R. (1941):Catalogue des plantes du Maroc 4. Minerva, Alger.Google Scholar
  5. Handel-Mazzetti H. (1907):Monographie der gattung Taraxacum. Leipzig & Wien.Google Scholar
  6. Hilliard O.M. (1977): Compositaein Natal. Univ. of Natal Press, Pietermaritzburg.Google Scholar
  7. Hilliard O.M. &Burtt B.L. (1975): Notes of some plants of southern Africa chiefly from Natal: IV.Notes Roy. Bot. Gard. Edinburgh 34(1975–1976): 73–100.Google Scholar
  8. Hughes J. &Richards A.J. (1988): The genetic structure of populations of sexual and asexualTaraxacum.Heredity 60: 161–171.Google Scholar
  9. Kirschner J. &Štěpánek J. (1993): The genusTaraxacum in the Caucasus. 1. Introduction, 2. The sectionPorphyrantha.Folia Geobot. Phytotax. 28: 295–320.Google Scholar
  10. Kirschner J. &Štěpánek J. (1998):A monograph of Taraxacumsect. Palustria. Institute of Botany, Academy of Sciences of the Czech Republic, Průhonice.Google Scholar
  11. Kirschner J., Štěpánek J., Tichý M., Krahulcová A., Kirschnerová L. &Pellar L. (1994): Variation inTaraxacum bessarabicum and allied taxa of the sectionPiesis (Compositae): Allozyme diversity, karyotypes and breeding behaviour.Folia Geobot. Phytotax. 29: 61–83.Google Scholar
  12. Mikoláš V. &Mihoková L. (1993):Taraxacum bessarabicum in East Slovakia.Thaiszia J. Bot. 3: 31–52.Google Scholar
  13. Northington D.K. (1974):Pyrrhopappus taraxacoides, a synonym ofTaraxacum fulvipillis.J. s. African Bot. 40: 313–314.Google Scholar
  14. Pomel A.N. (1874):Nouveau matériaux pour la flore atlantique. Savi, Paris.Google Scholar
  15. Richenbach H. G. (1858):Icones florae germanicae et helveticae 19, Cichoriaceae … Lipsiae.Google Scholar
  16. Reichenbach L. (1831):Flora germanica excursoria. Lipsiae.Google Scholar
  17. Richards A.J. (1991): 35.TaraxacumWiggers. In:StridA.,Mountain flora of Greece 2, Cambridge University Press, Cambridge, pp. 502–530.Google Scholar
  18. Schischkin B.K. (auct.) &Tzvelev N.N. (ed.) (1964): Oduvanchik —TaraxacumWigg. In:BobrovE.G. &TzvelevN.N. (eds.),Flora SSSR 29, Nauka, Leningrad, pp. 405–560, 728–754.Google Scholar
  19. van Soest J.L. (1963):Taraxacum species from India, Pakistan and neighbouring countries.Wentia 10: 1–91.Google Scholar
  20. van Soest J.L. (1975):TaraxacumWiggers. In:DavisP.H. (ed.),Flora of Turkey and the East Aegean Islands 5, Edinburgh University Press, Edinburgh, pp. 788–812.Google Scholar
  21. van Soest J.L. (1977):Taraxacum. In:Rechinger K.H. (ed.),Flora Iranica 122 (CompositaeII — Lactuceae), Akademische Druck-und Verlagsanstalt, Graz, pp. 223–285.Google Scholar

Copyright information

© Institute of Botany 1998

Authors and Affiliations

  1. 1.Department of Taxonomy, Institute of BotanyAcademy of Sciences of the Czech RepublicPrůhonice 1Czech Republic

Personalised recommendations