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Nykrur

Potamogeton
Potamogeton perfoliatus
Vísindaleg flokkun
Ríki: Jurtaríki (Plantae)
Fylking: Dulfrævingar (Magnoliophyta)
Flokkur: Einkímblöðungar (Liliopsida)
Ættbálkur: Kransjurtabálkur (Alismatales)
Ætt: Nykruætt (Potamogetonaceae)
Ættkvísl: Potamogeton

Nykrur (fræðiheiti Potamogeton) eru fjölærar rótfastar vatnaplöntur. Stilkir vaxa í vatni upp frá vatnbotni, blöð sem eru undir vatni eru aflöng en flotblöð sem eru í vatnsyfirborði eru rúnnuð. Blómin eru tvíkynjuð og sitja á axi sem kemur upp úr vatninu. Nykrur lifa í ferskvatni og ísöltu vatni. Þær vaxa oft í þéttum og miklum breiðum og eru mikilvægar sem fæða og búsvæði fyrir mörg dýr. Það getur verið erfitt að tegundagreina nykrur.

Listi yfir Potamogeton tegundir

[breyta | breyta frumkóða]

Eftirfarandi listi er byggður á nýlegum skráningum The Plant List Geymt 23 maí 2019 í Wayback Machine.[1]

  • P. acutifolius Link ex Roem. & Schult. 1818 - Spjótnykra
  • P. alpinus Balb. 1804 - Fjallnykra
  • P. amplifolius Tuck. 1848
  • P. antaicus Hagstr. 1916
  • P. australiensis A.Benn. 1910
  • P. berchtoldii Fieber 1838 - Smánykra
  • P. bicupulatus Fernald 1932
  • P. biformis Hagstr. 1916
  • P. brasiliensis A.Benn. 1910
  • P. chamissoi A.Benn. 1904
  • P. cheesemanii A.Benn. 1883
  • P. chongyangensis W.X.Wang 1984
  • P. coloratus Hornem. 1813 - Lindanykra
  • P. compressus L. 1753 - Sverðnykra
  • P. confervoides Rchb. 1845
  • P. crispus L. 1753 - Hrukkunykra
  • P. cristatus Regel & Maack, 1861
  • P. delavayi A.Benn. 1892
  • P. distinctus A. Benn. 1904
  • P. diversifolius Raf. 1811
  • P. drummondii Benth. 1878
  • P. epihydrus Raf. 1811 - Bandnykra
  • P. ferrugineus Hagstr. 1916
  • P. floridanus Small 1903
  • P. foliosus Raf. 1811
  • P. fontigenus Y.H.Guo, X.Z.Sun & H.Q.Wang 1985
  • P. friesii Rupr. 1845 - Broddnykra
  • P. fryeri A.Benn. 1907
  • P. gayi A.Benn. 1892
  • P. gramineus L. 1753 - Grasnykra
  • P. heterocaulis Z.S.Diao 1994
  • P. hillii Morong 1881
  • P. hoggarensis Dandy 1937
  • P. illinoensis Morong 1880
  • P. intortusifolius J.B.He, L.Y.Zhou & H.Q.Wang 1988
  • P. iriomotensis Masam. 1934
  • P. juzepczukii P.I.Dorof. & Tzvelev 1983
  • P. kashiensis Z.S.Diao 1995
  • P. lacunatifolius Papch. 2001
  • P. linguatus Hagstr. 1901
  • P. lucens L. 1753 - Gljánykra
  • P. maackianus A.Benn. 1904
  • P. mandschuriensis (A.Benn.) A.Benn. 1924
  • P. marianensis Cham. & Schltdl. 1827
  • P. montevidensis A.Benn. 1892
  • P. nanus Y.D.Chen 1987
  • P. natans L. 1753 - Blöðrunykra
  • P. nodosus Poir. 1816
  • P. nomotoensis Kadono & T.Nog. 1991
  • P. oakesianus J.W.Robbins 1867
  • P. obtusifolius Mert. & W.D.J.Koch 1823 - Pollanykra
  • P. ochreatus Raoul 1844
  • P. octandrus Poir. 1816
  • P. ogdenii Hellq. & R.L.Hilton 1983
  • P. oxyphyllus Miq. 1867
  • P. papuanicus G.Wiegleb 1993
  • P. paramoanus R.R.Haynes & Holm-Niels. 1982
  • P. parmatus Hagstr. 1908
  • P. perfoliatus L. 1753 - Hjartanykra
  • P. polygonifolius Pourr. 1788 - Rauðnykra
  • P. polygonus Cham. & Schltdl. 1827
  • P. praelongus Wulfen 1805 - Langnykra
  • P. pulcher Tuck. 1843
  • P. punense A.Galán 1988
  • P. pusillus L. 1753 - Dvergnykra
  • P. quinquenervius Hagstr. 1916
  • P. reniacoensis Sparre 1956
  • P. richardii Solms 1867
  • P. richardsonii (A.Benn.) Rydb. 1905
  • P. robbinsii Oakes 1841
  • P. rutilus Wolfg. 1827 Shetlandsnykra (líklega rangnefni)
  • P. sarmaticus Mäemets 1978 publ. 1979
  • P. schweinfurthii A.Benn. 1901
  • P. sclerocarpus K.Schum. 1894
  • P. sibiricus A.Benn. 1890
  • P. skvortsovii Klinkova 1993
  • P. solomonensis G.Wiegleb 1993
  • P. spathuliformis (J.W.Robbins) Morong 1893
  • P. spirilliformis Hagstr. 1916
  • P. spirillus Tuck. 1848
  • P. stenostachys K.Schum. 1894
  • P. strictifolius A.Benn. 1902
  • P. subnitens Hagstr. 1916
  • P. suboblongus Hagstr. 1916
  • P. sumatranus Miq. 1861
  • P. tennesseensis Fernald 1936
  • P. tepperi A.Benn. 1887
  • P. tricarinatus F.Muell. & A.Benn. 1892
  • P. trichoides Cham. & Schltdl. 1827 - Hárnykra
  • P. tubulatus Hagstr. 1922
  • P. ulei K.Schum. 1894
  • P. uruguayensis A.Benn. & Graebn.
  • P. vaseyi J.W.Robbins 1867
  • P. wrightii Morong 1886


Listi yfir Potamogeton blendinga

[breyta | breyta frumkóða]
  • P. × anguillanus Koidz.
  • P. × angustifolius J.Presl
  • P. × apertus Miki
  • P. × argutulus Hagstr.
  • P. × attenuatus Hagstr.
  • P. × babingtonii A.Benn.
  • P. × billupsii Fryer
  • P. × cadburyae Dandy & G.Taylor
  • P. × cognatus Asch. & Graebn.
  • P. × cooperi (Fryer) Fryer
  • P. × faurei (A.Benn.) Miki
  • P. × fluitans Roth - Hnútanykra
  • P. × franconicus G.Fisch.
  • P. × gessnacensis G.Fisch.
  • P. × griffithii A.Benn.
  • P. × grovesii Dandy & G.Taylor
  • P. × haynesii Hellq. & G.E.Crow
  • P. × inbaensis Kadono
  • P. × kamogawaensis Miki
  • P. × kyushuensis Kadono & Wiegleb
  • P. × lanceolatifolius (Tiselius) C.D.Preston
  • P. × lanceolatus Sm.
  • P. × leptocephalus Koidz.
  • P. × lintonii Fryer
  • P. × malainoides Miki
  • P. × mariensis Papch.
  • P. × mysticus Morong
  • P. × nericius Hagstr.
  • P. × nerviger Wolfg.
  • P. × nitens Weber
  • P. × olivaceus Baagøe ex G.Fisch.
  • P. × orientalis Hagstr.
  • P. × philippinensis A.Benn.
  • P. × prussicus Hagstr.
  • P. × pseudofriesii Dandy & G.Taylor
  • P. × rectifolius A.Benn.
  • P. × salicifolius Wolfg.
  • P. × schreberi G.Fisch.
  • P. × scoliophyllus Hagstr.
  • P. × sparganiifolius Laest. ex Fr.
  • P. × spathulatus Schrad. ex W.D.J.Koch & Ziz
  • P. × subsessilis Hagstr.
  • P. × sudermanicus Hagstr.
  • P. × undulatus Wolfg.
  • P. × vaginans (Bojer ex A.Benn.) Hagstr.
  • P. × varians Morong
  • P. × variifolius Thore
  • P. × vepsicus A.A.Bobrov & Chemeris

Tilvísanir

[breyta | breyta frumkóða]
  1. Potamogeton. The Plant List; Version 1.1 (published on the internet). Royal Botanic Gardens, Kew and Missouri Botanical Garden. 2010. Afrit af upprunalegu geymt þann ágúst 6, 2020. Sótt 16. nóvember 2014.
  Þessi grasafræðigrein er stubbur. Þú getur hjálpað til með því að bæta við greinina.
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Nykrur
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