Nesleslekta









































Nesleslekta

Urtica dioica (Blüten).jpg

Systematikk

Rike:

Planteriket Plantae

Infrarike:

Streptophyta

Overrekkje:

Landplantar Embryophyta

Rekkje:

Karplantar Tracheophyta

Underrekkje:

Frøplantar Spermatophytina

Orden:

Roseordenen Rosales

Familie:

Neslefamilien Urticaceae

Slekt:

Nesleslekta Urtica
L., 1753

Nesleslekta (Urtica)[1] er ei planteslekt i neslefamilien. Plantane i slekta kan «brenna» om ein rører blada eller stenglane deira, og dei er derfor ofte kjende som brennesler, brenn-nesler og brennenesler.
Slekta omfattar rundt 50 artar.[2]


Nesler har motsette, grovtagga blad og lysegrøne blomar som heng i knippe frå bladhjørna. Stengel og blad har brennhår som sprøyter ut ei giftig væske når den skjøre, glasaktige spissen blir broten av.[2]


I Noreg veks to nesleartar, stornesle (U. dioica) og smånesle (U. urens).[2]



Artar |





Urtica cannabina





Urtica magellanica


Det finst ei lang rekkje artar ein har plassert innan nesleslekta, men mange av desse er synonym, særleg for stornesle, som har fleire underartar.[3]


Artar i nesleslekta med naturlege hovudutbeiingsområde:




  • Urtica andicola Webb


  • Urtica angustifolia Fisch. ex Hornem. Kina, Japan, Korea


  • Urtica ardens Kina


  • Urtica aspera Petrie Sørøya på New Zealand


  • Urtica atrichocaulis Himalaya, sørvestlege Kina


  • Urtica atrovirens vestlege middelhavsland


  • Urtica australis Hook.f. Sørøya på New Zealand og kringliggande subantarktiske øyar


  • Urtica cannabina L., vestlege Asia frå Sibir til Iran


  • Urtica chamaedryoides (heartleaf nettle), søraustlege Nord-Amerika


  • Urtica dioica L. 1753 (stornesle eller brennesle), Europa, Asia, Nord-Amerika

    • Urtica dioica subsp. galeopsifolia Wierzb. ex Opiz (fen nettle eller stingless nettle), Europe. (Av og til rekna som eigen art, Urtica galeopsifolia.)



  • Urtica dubia (large-leaved nettle), Canada


  • Urtica ferox G.Forst. (ongaonga eller tree nettle), New Zealand


  • Urtica fissa China


  • Urtica gracilenta (mountain nettle), Arizona, New Mexico, vestlege Texas, nordlege Mexico


  • Urtica hyperborea Himalaya frå Pakistan til Bhutan, Mongolia og Tibet i høgda


  • Urtica incisa Poir (scrub nettle), Australia, New Zealand


  • Urtica kioviensis Rogow. Aust-Europa


  • Urtica laetivirens Maxim. Japan, Nordaust-Kina

  • Urtica linearifoliaæ' (Hook.f.) Cockayne (creeping eller swamp nettle), New Zealand


  • Urtica mairei Himalaya, sørvestlege Kina, Nordaust-India, Myanmar


  • Urtica massaica Africa


  • Urtica membranacea Poir. ex Savigny middelhavsland, Azorane


  • Urtica morifolia Poir. Kanariøyane (endemisk)


  • Urtica parviflora Himalaya (lågare område)


  • Urtica peruviana D.Getltman Peru


  • Urtica pseudomagellanica D.Geltman Bolivia


  • Urtica pilulifera (Roman nettle), Sør-Europa


  • Urtica platyphylla Wedd. Kina, Japan


  • Urtica procera Mühlenberg (tall nettle), Nord-Amerika


  • Urtica pubescens Ledeb. sørvestlege Russland aust til Sentral-Asia


  • Urtica rupestris Sicilia (endemisk)


  • Urtica sondenii (Simmons) Avrorin ex Geltman nordaustlege Europa, nordlege Asia


  • Urtica taiwaniana Taiwan


  • Urtica thunbergiana Japan, Taiwan

  • Urtica triangularisa


  • Urtica urens L. (smånesle), Europa, Nord-Amerika



Referansar |




  1. «Slekt Urtica L.». Artsdatabanken. Henta 25. november 2017. 


  2. 2,02,12,2 «nesle» i Store norske leksikon, snl.no.


  3. «The Plant List: Urtica». Royal Botanic Gardens, Kew and Missouri Botanic Garden. Henta 6. september 2016. 



  • Denne artikkelen bygger på «Stornesle» frå Wikipedia på bokmål, den 25. november 2017.





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