''Meconopsis'' is a genus of flowering plants in the poppy family

Papaveraceae The Papaveraceae are an economically important family of about 42 genera and approximately 775 known species of flowering plants in the order Ranunculales, informally known as the poppy family. The family is cosmopolitan, occurring in temperat ...

. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which

Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his Nobility#Ennoblement, ennoblement in 1761 as Carl von Linné#Blunt, Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalise ...

had described as ''

Papaver cambricum ''Papaver cambricum'', synonym ''Meconopsis cambrica'', the Welsh poppy, is a perennial flowering plant in the poppy family Papaveraceae. It has yellow to orange flowers and is widely grown as a garden plant. It is a native of damp, rocky sites ...

''. The genus name means "poppy-like" (from

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

''mekon'' poppy, ''opsis'' alike). Himalayan species discovered later were also placed in ''Meconopsis''. In the 21st century, it was discovered that the Himalayan species were less closely related to the Welsh poppy, which has been restored to ''

Papaver ''Papaver'' is a genus of 70–100 species of frost-tolerant annuals, biennials, and perennials native to temperate and cold regions of Eurasia, Africa and North America. It is the type genus of the poppy family, Papaveraceae. Description The ...

''. All species now placed in ''Meconopsis'' are native to the Himalayas and surrounding regions. They have attractive, usually blue flowers. The taxonomy of ''Meconopsis'' remains unsettled. Although many sources recognize the genus, others sink it into ''Papaver''. There is also uncertainty over the number of species, as many readily hybridise with each other producing viable seed. It is likely that some individually named species are in fact a single species but with an under-appreciated morphological diversity. A large proportion of species are

monocarpic Monocarpic plants are those that flower and set seeds only once, and then die. The term is derived from Greek (''mono'', "single" + ''karpos'', "fruit" or "grain"), and was first used by Alphonse de Candolle. Other terms with the same meaning ar ...

and as such are notoriously difficult to maintain in cultivation. ''Meconopsis'' species do not produce opium.

Taxonomy

The genus ''Meconopsis'' and its species have a complex taxonomic history. A European species was first described in 1753 by

as ''

'', commonly known as the Welsh poppy. It has a

style Style is a manner of doing or presenting things and may refer to: * Architectural style, the features that make a building or structure historically identifiable * Design, the process of creating something * Fashion, a prevailing mode of clothing ...

, while all other then described ''Papaver'' species lacked one, having only a "stigmatic disc" (i.e. a disc-shaped region on the top of the ovary receptive to pollen). On the basis of this difference, in 1814, Louis Viguier transferred ''P. cambricum'' to his new genus ''Meconopsis'' as ''Meconopsis cambrica'', then the only species. Later, when mainly blue-flowered poppy-like species with styles like the Welsh poppy were discovered in the

Himalayas The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 10 ...

and neighbouring regions, they were also placed in the genus ''Meconopsis''. However, molecular phylogenetic studies from 1995 onwards showed that the Welsh poppy was not closely related to the Himalayan species, but rather to ''Papaver'' species. In 2011, Kadereit ''et al.'' proposed that Linnaeus's original name should be restored. However, as ''Meconopsis cambrica'' was the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specime ...

of the genus ''Meconopsis'', if the Welsh poppy was moved back to ''Papaver'', all the Himalayan species would have to be placed in this genus as well. In 2012, it was proposed that ''Meconopsis'' should become a conserved name, with the new type ''Meconopsis regia''. This proposal has been accepted.

Phylogeny

Molecular phylogenetic studies have shown that the Old World members of the subfamily Papaveroideae form a monophyletic clade. However, they have sometimes left relationships within this clade unresolved. A 2014 study found that neither ''Meconopsis'' nor ''Papaver'' were monophyletic. ''Meconopsis'' was split into two clades, a large one which the authors called section ''Eumeconopsis'', and a smaller one, ''Meconopsis'' sect. ''Eucathcartia'', containing four of the species included in the study. An alternative

cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to ...

resolves Clade III as the sister of Clades I and II. It was suggested that the generic name ''Meconopsis'' should be retained for Clade I, and Clade V should be treated as the genus ''Cathcartia''. This would still leave ''Papaver'' non-monophyletic. An alternative approach, adopted by Plants of the World Online and since largely reversed, was to sink ''Meconopsis'', ''

Roemeria ''Roemeria'' is a genus of flowering plants in the family Papaveraceae, native to Macaronesia, Europe, the Mediterranean, North Africa, the Caucasus, the Middle East, the Arabian Peninsula, Central Asia, the western Himalayas, Xinjiang, and Mongo ...

'', ''Stylomecon'' and ''

Cathcartia ''Cathcartia'' is a small genus of flowering plants in the family Papaveraceae, native to China, Nepal, the eastern Himalayas, and northern Myanmar. Chloroplast DNA evidence supports a split of ''Cathcartia'' from the blue poppy genus ''Meconopsi ...

'' into ''Papaver''.

Sections

In 2017, Xiao and Simpson raised ''Meconopsis'' sect. ''Eucathcartia'' (Clade V) to the genus ''Cathcartia''. On the basis of a further molecular phylogenetic study they divided ''Meconopsis'' into four sections. *''Meconopsis'' sect. ''Meconopsis'' :*''

Meconopsis autumnalis ''Meconopsis autumnalis'', the Nepalese autumn poppy, is a yellow-flowered Himalayan poppy belonging to series Robustae, and is endemic to the Ganesh Himal range of central Nepal, where it was discovered in 2008 on a research expedition from the ...

'' P.A.Egan :*''

Meconopsis chankheliensis ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Grey-Wilson :*''

Meconopsis dhwojii ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' G.Taylor :*''

Meconopsis discigera ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Prain :*''

Meconopsis ganeshensis ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Grey-Wilson :*''

Meconopsis gracilipes ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' G.Taylor :*''

Meconopsis manasluensis ''Meconopsis manasluensis'' is a red-flowered Himalayan poppy belonging to ''Meconopsis'' subg. ''Discogyne'', which forms a natural grouping of 6 or 7 species within the genus all characterised by a stylar disc surmounting the ovary (lacking in ...

'' P A.Egan :*''

Meconopsis napaulensis ''Meconopsis napaulensis'', the Nepal poppy or satin poppy, is a plant of the family Papaveraceae. The plant contains beta-carbolines, which (in doses high enough) act as a psychedelic drug. However, its phytochemistry remains predominantly un ...

'' DC. :*'' Meconopsis paniculata'' Prain :*''

Meconopsis pinnatifolia ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' C.Y.Wu & H.Chuang ex L.H.Zhou :*'' Meconopsis regia'' G.Taylor :*''

Meconopsis robusta ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Hook.f. & Thomson :*''

Meconopsis simikotensis ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Grey-Wilson :*'' Meconopsis staintonii'' Grey-Wilson :*''

Meconopsis superba ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' King ex Prain :*''

Meconopsis taylorii ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' L.H.J.Williams :*'' Meconopsis tibetica'' Grey-Wilson :*'' Meconopsis torquata'' Prain :*'' Meconopsis violacea'' Kingdon-Ward :*''

Meconopsis wallichii ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Hook. :*''

Meconopsis wilsonii ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Grey-Wilson *''Meconopsis'' sect. ''Aculeatae'' Fedde :*'' Meconopsis aculeata'' Royle :*'' Meconopsis bikramii'' Aswal (doubtfully placed here) :*''

Meconopsis concinna ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Prain :*''

Meconopsis delavayi ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Franch. Ex Prain :*'' Meconopsis forrestii'' Prain :*'' Meconopsis georgei'' G.Taylor :*''

Meconopsis henrici ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Louis Guillaume Alexandre Viguier, Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had de ...

'' Bureau & Franch. :*''

Meconopsis horridula ''Meconopsis horridula'', the prickly blue poppy, is a flowering plant from the family Papaveraceae. It is an endangered species that grows in high altitudes. The height of the plant varies from 20 cm to 1m. It is a monocarpic, dicot plant. ...

'' Hook.f. & Thomson :*'' Meconopsis impedita'' Prain :*'' Meconopsis lancifolia'' Franch. :*'' Meconopsis latifolia'' Prain :*'' Meconopsis muscicola'' Tosh.Yoshida, H.Sun & Boufford :*'' Meconopsis neglecta'' G.Taylor :*'' Meconopsis pseudovenusta'' G.Taylor :*'' Meconopsis pulchela'' Tosh.Yoshida, H.Sun & Bouford :*'' Meconopsis venusta'' Prain :*'' Meconopsis yaoshanensis'' Tosh.Yoshida, H.Sun & Boufford *''Meconopsis'' sect. ''Primulinae'' Fedde :*'' Meconopsis argemonantha'' Prain :*'' Meconopsis bella'' Prain :*''

Meconopsis florindae ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Kingdon-Ward :*''

Meconopsis lyrata ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' (H.A.Cummins & Prain) Fedde :*'' Meconopsis primulina'' Prain :*'' Meconopsis sinuata'' Prain :*''

Meconopsis wumungensis ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' K.M.Feng :*'' Meconopsis zang-nanensis'' L.H.Zhou *''Meconopsis'' sect. ''Grandes'' Fedde :*'' Meconopsis betonicifolia'' Franch. :*''

Meconopsis biloba ''Papaver quintuplinervium'', the harebell poppy, is a species of flowering plant in the family Papaveraceae, native to China. As its synonym ''Meconopsis quintuplinervia'' it has gained the Royal Horticultural Society's Award of Garden Merit ...

'' L.Z.An, Shu Y.Chen & Y.S.Lian :*'' Meconopsis grandis'' Prain :*'' Meconopsis integrifolia'' (Maxim.) Franch. :*''

Meconopsis punicea ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Maxim. :*'' Meconopsis quintuplinervia'' Regel :*''

Meconopsis simplicifolia ''Meconopsis simplicifolia'' is a perennial in the poppy family, sometimes monocarpic, with a taproot, rosette of leaves with bristly hairs, and blue or purple flowers on leafless stems, native to altitudes of in central Nepal and southeaster ...

'' (D.Don) Walp. :*'' Meconopsis sherriffii'' G.Taylor A further species was described after Xiao and Simpson's classification: *'' Meconopsis gakyidiana'' Tosh.Yoshida, Yangzom & D.G.Long Xiao and Simpson placed four former ''Meconopsis'' species in the genus ''Cathcartia'': *''Cathcartia chelidonifolia'' (Bureau & Franch.) Grey-Wilson = ''

Meconopsis chelidoniifolia ''Meconopsis'' is a genus of flowering plants in the poppy family Papaveraceae. It was created by French botanist Viguier in 1814 for the species known by the common name Welsh poppy, which Carl Linnaeus had described as ''Papaver cambricum''. ...

'' Bureau & Franch. *''Cathcartia oliveriana'' (Franch. ex Prain) Grey-Wilson = '' Meconopsis oliveriana'' Franch. ex Prain *''Cathcartia smithiana'' Hand.-Mazz. = '' Meconopsis smithiana'' (Hand.-Mazz.) G.Taylor ex Hand.-Mazz. *''Cathcartia villosa'' Hook.f. = ''

Meconopsis villosa ''Meconopsis villosa'', the Himalayan woodland-poppy, is an ornamental poppy, which is native of Nepal. The species was placed in the genus ''Cathcartia'' erected by J.D. Hooker to honour J.F. Cathcart, an Indian civil servant and amateur botanis ...

'' (Hook.f.) G.Taylor

Cultivation

Himalayan varieties have the reputation for being difficult to grow from seed, but when germinating new plants, using fresh seeds will help. These plants are available in a variety of strong colours, including blue, red, orange, purple, white and yellow depending on species and cultivar. All meconopsis require an acid or neutral soil pH, in a partially shaded sheltered position.

Cultivars

The following cultivars, of mixed or uncertain heritage, have won the

Royal Horticultural Society The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr (Nor ...

's Award of Garden Merit:- * 'Bobby Masterton' (Infertile Blue Group) * 'Dalemain' (George Sherriff Group) * 'Keillour' *'Marit' * 'Mop-Head' (Fertile Blue Group) *'Mrs Jebb' (Infertile Blue Group) *'P.C. Abildgaard' (Infertile Blue Group) * 'Slieve Donard' (Infertile Blue Group) * 'Susan's Reward' (George Sherriff Group)

Pests and diseases

In the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...

, ''Meconopsis'' has been affected by the invasive golden root mealybug.

Damping off Damping off (or damping-off) is a horticultural disease or condition, caused by several different pathogens that kill or weaken seeds or seedlings before or after they germinate. It is most prevalent in wet and cool conditions. Symptoms There ar ...

may occur on seedling grown plants.

References

External links

Meconopsis.org
specialized website - includes further links

A ''Meconopsis'' visual reference guide {{Taxonbar, from=Q1414316 Meconopsis, Papaveraceae genera