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Fam.: Polypodiaceae / Ferns      

Hybrid formula (parents):  Asplenium trichomanes  L.  subsp. quadrivalens  D.E.MEY.  x  Asplenium trichomanes  L.  subsp. trichomanes

Genus:  Asplenium  L.
 

Authors:
   D.E.MEY.:  Dieter Erich Meyer (1926 - 1982), German botanist
   L.:  Carl von Linné (Linnaeus, 1707 - 1777), Swedish naturalist who introduced the binary naming system for plants and animals
 

Etymology:
   Asplenium:   a = not, splenon = milt (against milt disease)
   lusaticum:   from Lusatia (Eastern Germany and Poland)
   trichomanes:   thin hair
   quadrivalens:   tetraploid
 

This is the hybride of Asplenium trichomanes subsp. quadrivalens and Asplenium trichomanes subsp. trichomanes. With its own name it is actually called Asplenium trichomanes nothosubsp. lusaticum (D.E.MEY.) LAWALREE. A 'nothosubsp.' is a hybrid between subspecies. LAWALREE it the abbbreviation for the Belgian botanist André Gilles Célestin Lawalrée (1921-2005), who recombined the hybrid as hybrid between subspecies. The hybrid has first been found in Upper Lusatia, according to that it got the name lusaticum. Later the hybrid has also been detected in Belgium, and not until 2016 in the southern part of Nordrhein-Westphalia and the northern part of Rhineland-Palatina in Germany, where also older enigmatic findings could be assigned to this hybrid. At least at the German sites the hybrid can not only be indentified by tits leaf form, but also by its bigger growth (heterosis). Final certainty on the status of the plant has been achieved by microscopical inspection of the spores and by detemination of the degree of ploidy. The article which is describing the German findings is JÄGER, W. & H. BÄPPLER, Der Lausitzer Streifenfarn Asplenium trichomanes nothosubsp. lusaticum (Aspleniaceae) im Grenzgebiet zwischen Nordrhein-Westfalen und Rheinland-Pfalz (2016), Veröff. Bochumer Bot. Ver. 8(10) 110-117.

 

Asplenium x lusaticum / Hybrid Spleenwort, D Morsbach 22.10.2018
Fig. 1:  Asplenium x lusaticum / Hybrid Spleenwort
D Morsbach 22.10.2018
Asplenium x lusaticum / Hybrid Spleenwort, D Morsbach 22.10.2018
Fig. 2:  Asplenium x lusaticum / Hybrid Spleenwort
D Morsbach 22.10.2018
Asplenium x lusaticum / Hybrid Spleenwort, D Morsbach 22.10.2018
Fig. 3:  Asplenium x lusaticum / Hybrid Spleenwort
D Morsbach 22.10.2018
Asplenium x lusaticum / Hybrid Spleenwort, D Morsbach 22.10.2018
Fig. 4:  Asplenium x lusaticum / Hybrid Spleenwort
D Morsbach 22.10.2018

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