[Equisetum]
HORSETAIL HYBRID CHART
[Equisetum]
HORSETAIL
HYBRIDS
BSBI MAPS
Field
Horsetail

(arvense)
Water
Horsetail

(fluviatile)
Rough
Horsetail

(hyemale)
Marsh
Horsetail

(palustre)
Shady
Horsetail

(pratense)
Branched
Horsetail

(ramosissimum)
Wood
Horsetail

(sylvaticum)
Great
Horsetail

(telmateia)
Variegated
Horsetail

(variegatum)
Variegated
Horsetail

(variegatum)
    Mackay's
Horsetail
    Equisetum
×
meridionale
   
Great
Horsetail

(telmateia)
Anglesey
Horsetail
Equisetum
×
willmotii
  Equisetum
×
font-queri
    Equisetum
×
bowmanii
 
Wood
Horsetail

(sylvaticum)
        Equisetum
×
mildeanum
  Equisetum
×
bowmanii
 
Branched
Horsetail

(ramosissimum)
    Moore's
Horsetail
        Equisetum
×
meridionale
Shady
Horsetail

(pratense)
  Equisetum
×
mchaffieae
      Equisetum
×
mildeanum
   
Marsh
Horsetail

(palustre)
Equisetum
×
rothmaleri
Equisetum
×
dycei
        Equisetum
×
font-queri
 
Rough
Horsetail

(hyemale)
        Moore's
Horsetail
    Mackay's
Horsetail
Water
Horsetail

(fluviatile)
Shore
Horsetail
  Equisetum
×
dycei
Equisetum
×
mchaffieae
    Equisetum
×
willmotii
 
Field
Horsetail

(arvense)
Shore
Horsetail
  Equisetum
×
rothmaleri
      Anglesey
Horsetail
 

There are no species without hybrids, all hybridize.