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Fam.: Equisetaceae / Horsetail Fam.      

Hybrid formula (parents):  Equisetum hyemale  L.  x  Equisetum x trachyodon  (A.BR.) W.D.J.KOCH

Genus:  Equisetum  L.
 

Authors:
   H.P.FUCHS:  Hans Peter Fuchs-Eckert (1928 - 1999), Swiss botanist
   GEISSERT:  Fritz Geissert (1923 - 2005), botanist from Alsace (France)
   G.PHIL.:  Georg Philippi (1936 - 2010), German botanist at Karlsruhe
   A.BR.:  Addison Brown (1830 - 1913), jurist and botanist in USA
   W.D.J.KOCH:  Wilhelm Daniel Joseph Koch (1771 - 1849), German botanist from Kusel
   L.:  Carl von Linné (Linnaeus, 1707 - 1777), Swedish naturalist who introduced the binary naming system for plants and animals
 

Etymology:
   Equisetum:   equus = horse, seta = bristle
   alsaticum:   from Alsace
   hyemale:   hibernal
   trachyodon:   rough-teethed
 

Equisetum x alsaticum is the triple hybrid Equisetum hyemale x Equisetum x trachyodon, which corresponds to Equisetum hyemale x ( Equisetum hyemale x Equisetum variegatum ).
The plant occurs at few locations in Alsace (France) and Southern Baden (Germany, Baden-Württemberg). Important differences to Equisetum hyemale are that the bards at the sheaths are not lost so quickly, and that the central hole in the interior of the stem is smaller.

 

Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 23.7.2011
Fig. 1:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 23.7.2011
Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 23.7.2011
Fig. 2:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 23.7.2011
Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 23.7.2011
Fig. 3:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 23.7.2011
Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 23.7.2011
Fig. 4:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 23.7.2011
Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 23.7.2011
Fig. 5:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 23.7.2011
Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 23.7.2011
Fig. 6:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 23.7.2011
Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 23.7.2011
Fig. 7:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 23.7.2011
Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 23.7.2011
Fig. 8:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 23.7.2011
Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 23.7.2011
Fig. 9:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 23.7.2011
Equisetum x alsaticum / Alsatian Horsetail, D Karlsruhe 19.7.2008
Fig. 10:  Equisetum x alsaticum / Alsatian Horsetail
D Karlsruhe 19.7.2008

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