Equisetum hyemale
Dutch Rush
Erected evergreen stems up to 1 m in height, leathery, rarely branching, dark green
Fertile and sterile stems alike
Can be confused with E. x moorei (see References)
EQUISETACEAE
Stem development and fructification all along the year
Wet woods, damp shaded slopes, up to an altitude of 1500 m
Not common in Vercors : les Ecouges, les Plâtres (above Villard de Lans)