Equisetales
English: Horsetails.
Clades: Equisetanae; Pteridophyta; Plants.
Region: cosmopolitan.
Habitat: wet areas.
Subphases
1. Psilotaceae.
2. Osmundaceae.
4. Equisetaceae.
5. Marratiaceae.
6. Botrychiaceae.
7. Ophiosglossaceae
Botany
Fern; vascular; ± 410 million years old.
Stem: single; vertical erect; leaves at regular interval nodes.
Leaves: needle-like; single vein.
Sporangia: sporangiophores in terminal strobili; whorled, fused into sheaths encircling base of internodes stems ridged with internal hollow canals spores with elaters 4–6, straplike.
Reproduction: by spores; bear a protostele; having microphylls,
Taxonomy
In most classifications Equisetales contains 1 family, Equisetaceae
Plant theory
In the Plant theory Equisetales is the only Order in the Class Equisetidae.
Equisetales contains the families Psilotaceae, Ophiosglossaceae, Equisetaceae, Osmundaceae and Marratiaceae.
The classification is tentative, as few families are nknown well enough in homeopathy for an exact placement.
Equisetaceae are placed in Subphase 4. This shows the prominent quality of Silicon, being in Subphase 4 in the Silicon series, just as Equisetaceae is. Equisetum is the plant having the highest content of Silicon of all known plants, up to 80%.
Equisetales shows also the prominent place of Subphase 4 in general, the Phase that is the strongest, most vital and longest surviving. Phase 4 is the most alive, showing what it is, without hesitation and retirement.