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Vorige Art/previous species (Left arrowball from Animation City 1991)     Equisetum x trachyodon  (A.BR.) W.D.J.KOCH     Nächste Art/next species (Right arrowball from Animation City 1991)
 

Fam.: Equisetaceae / Horsetail Fam.      

Hybrid formula (parents):  Equisetum hyemale  L.  x  Equisetum variegatum  SCHLEICH. ex F.WEBER & D.MOHR

Genus:  Equisetum  L.
 

Authors:
   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
   SCHLEICH.:  Johann Christian Schleicher (1768 - 1834), German botanist in Switzerland
   F.WEBER:  Friedrich Weber (1781 - 1823), German physician and botanist
   D.MOHR:  Daniel Matthias Heinrich Mohr (1780 - 1808), botanist from Kiel (Schleswig-Holstein, Germany)
   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
   trachyodon:   rough-teethed
   hyemale:   hibernal
   variegatum:   variegated
 

Equisetum x trachyodon grows at similar locations as Equisetum x moorei, e.g. at the shore in the upper Rhine valley, but it is more daintily. Today it often grows still where its parent Equisetum variegatum is long extinct. As the Rough Horsetail it is green in winter. Its spore bearings have a more pronounced tip than those of the Rough Horsetail.
The microscope image shows the 'aborted' (malformed) spores of the hybrid as small white sheaths, while a corresponding image at Equisetum hyemale shows well formed spores which are green and bigger.

 

Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 1:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 2:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 3:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 4:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 5:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 6:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 7:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 8:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 9:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 10:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 11:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 12:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 13:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 14:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 15:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 5.3.2013
Fig. 16:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 5.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 7.3.2013
Fig. 17:  Equisetum x trachyodon / Mackay's Horsetail (aborted spores, ~200x)
D Ketsch 7.3.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 18:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 19:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 20:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 21:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 22:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 23:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 24:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 25:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 26:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Ketsch 19.7.2013
Fig. 27:  Equisetum x trachyodon / Mackay's Horsetail
D Ketsch 19.7.2013
Equisetum x trachyodon / Mackay's Horsetail, D Hagen 11.6.2020
Fig. 28:  Equisetum x trachyodon / Mackay's Horsetail
D Hagen 11.6.2020
Equisetum x trachyodon / Mackay's Horsetail, D Hagen 11.6.2020
Fig. 29:  Equisetum x trachyodon / Mackay's Horsetail
D Hagen 11.6.2020
Equisetum x trachyodon / Mackay's Horsetail, S Öland, Stora Alvaret 8.8.2009
Fig. 30:  Equisetum x trachyodon / Mackay's Horsetail
S Öland, Stora Alvaret 8.8.2009
Equisetum x trachyodon / Mackay's Horsetail, S Öland, Stora Alvaret 8.8.2009
Fig. 31:  Equisetum x trachyodon / Mackay's Horsetail
S Öland, Stora Alvaret 8.8.2009
Equisetum x trachyodon ? / Mackay's Horsetail, Corsica Porto 28.5.2010
Fig. 32:  Equisetum x trachyodon ? / Mackay's Horsetail
Corsica, Porto 28.5.2010
Equisetum x trachyodon ? / Mackay's Horsetail, Corsica Porto 28.5.2010
Fig. 33:  Equisetum x trachyodon ? / Mackay's Horsetail
Corsica, Porto 28.5.2010
Equisetum x trachyodon ? / Mackay's Horsetail, Corsica Porto 28.5.2010
Fig. 34:  Equisetum x trachyodon ? / Mackay's Horsetail
Corsica, Porto 28.5.2010
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