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Equisetaceae : Equisetum ferrissii det. Robbin Moran 2004
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USA: Utah:: Wasatch Mountains
Equisetum ferrissii is of hybrid origin between E. hyemale and E. laevigatum. The central axis of the strobilis do not elongate to expose the sporagnia and allow them to dry, split, and release the spores.
Copyright 2004 by L.H. Bailey Hortorium (image, not necessarily source) [ref. DOL7443]
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Equisetaceae Equisetum ferrissii
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