Meconopsis

Meconopsis Vig.

As traditionally understood Meconopsis is a genus of about 50 species (Taylor 1934, Cobb 1989). All except one occur from the Himalayas to western China. One species is native to western Europe (Meconopsis cambrica). Rather numerous species are cultivated as ornamentals (see Ratter & Taylor 1995, Köhlein 2003, Jäger & al. 2008) but only few are fairly frequent in cultivation. Several websites are dedicated to the genus Meconopsis in cultivation, see for instance The Meconopsis Group (http://www.meconopsis.org) or Meconopsis World (http://meconopsisworld.com). 

In recent times, the generic circumscription of Meconopsis came into question. Meconopsis cambrica, originally described as a species of Papaver (P. cambricum L.), is rather well separated from the Asian representatives of the genus, morphologically as well as geographically. It has a style rather than a stigmatic disc and seems more closely related to Papaver than to the remainder of Meconopsis. Recent molecular phylogenetic research confirmed this (Carolan & al. 2006). Papaver was shown to be monophyletic only if Meconopsis cambrica (and the genus Roemeria) were included. Kadereit & al. (1997) already demonstrated that within Meconopsis two distinct lineages exist and that in its current circumscription it is neither monophyletic nor distinct from Papaver. Kadereit & al. (2011) recently confirmed that Meconopsis cambrica in fact belongs with Papaver. However, there are apparently no morphological similarities with extant species of Papaver and there is no obvious section or group of species with which to place Papaver cambrica. Still according to Kadereit & al. (2011) the basal lineage of Asian Meconopsis is better segregated as Cathcartia Hook. f. Generic limits of Meconopsis obviously are not yet stable. Therefore, and in accordance with the account in Euro+Med Plantbase, Meconopsis cambrica is here tentatively maintained in its traditional circumscription (which also is in agreement with the current concept of Meconopsis in horticulture).

Literature:


Blunt W. (1976b) Poppycock: the blue poppies. Garden (London) 101(4): 211-212.

Carolan J.C., Hook I.L.I., Chase M.W., Kadereit J.W. & Hodkinson T.R. (2006) Phylogenetics of Papaver and Related Genera Based on DNA Sequences from ITS Nuclear Ribosomal DNA and Plastid trnL Intron and trnL–F Intergenic Spacers. Annals of Botany 98(1): 141-155.

Cobb J.L.S. (1986-1987) Cultivation of the genus Meconopsis. The Rock Garden 19: 343-353.

Cobb J.L.S. (1989) Meconopsis. C. Helm, Timber Press: 144 p.

Gallup M. (1980) Welsh poppies to Tibetan blues: Meconopsis in cultivation. Country Life 167(4315): 844-845.

Grey-Wilson C. (1992) A survey of the genus Meconopsis in cultivation. Plantsman 14: 1-33.

Jäger E.J., Ebel F., Hanelt P. & Müller G. (eds.) (2008) Rothmaler Band 5. Exkursionsflora von Deutschland. Krautige Zier- und Nutzpflanzen. Springer Verlag, Berlin: 880 p.

Kadereit J.W., Jork K.B. & Schwarzbach A.E. (1997) The phylogeny of Papaver s.l.: Polyphyly or monophyly? Plant Systematics and Evolution 204: 75-98.

Kadereit J.W., Preston C.D. & Valtueña F.J. (2011) Is Welsh poppy, Meconopsis cambrica (L.) Vig. (Papaveraceae), truly a Meconopsis? New Journal of Botany 1(2): 80-87. [available online at: http://www.ingentaconnect.com/content/maney/njb/2011/00000001/00000002/art00002]

Köhlein F. (2003) Mohn und Scheinmohn. Papaver, Meconopsis und andere Papaveraceae. Ulmer, Stuttgart: 192 p.

Ratter J.A. & Taylor G. (1995) Meconopsis. In: Cullen J. & al. (eds.), The European Garden Flora, vol. 4. Cambridge University Press, Cambridge: 110-114.

Schirmer K. (1990) Meconopsis: der asiatische Scheinmohn. Palmengarten 54(2): 79-81.

Taylor G. (1934) An account of the genus Meconopsis. New flora and silva Ltd., London: 130 p.

Valtueña F.J., Preston C.D. & Kadereit J.W. (2011) Evolutionary significance of the invasion of introduced populations into the native range of Meconopsis cambrica. Molecular Ecology 20: 4318-4331.

Valtueña F.J., Preston C.D. & Kadereit J.W. (2012) Phylogeography of a Tertiary relict plant, Meconopsis cambrica (Papaveraceae), implies the existence of northern refugia for a temperate herb. Molecular Ecology 21(6): 1423-1437.

Zhang M.-L. & Grey-Wilson C. (2008b) Meconopsis. In: Wu Z.-Y. & al. (eds.), Flora of China, vol. 7. Science Press, Beijing, China & Missouri Botanical Garden Press, Saint Louis, USA: 262-278. [available online at: http://flora.huh.harvard.edu/china/PDF/PDF07/Meconopsis.pdf]

Taxonomic name: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith