Query: Plants from Mississippi or Horsetails.
Domain: plants
Relevant documents:
Stamnostoma
Pseudobornia
Sphenopteris
Hamatophyton
Equisetidae
Rotafolia songziensis
Hamatophyton verticillatum
Moresnetiaceae
Rinistachya
Progymnosperm
Metzgeriothallus
Annularia
Calamites
Sphenophyllales
Neocalamites