FERN EQUISETACEAE HORSE TAIL

EQUISETUM= HORSE TAIL

I-TALLOS ANUALES
 1-TWO TYPES OF STEM ,IN DIFFERENT TIMES ONE FERTILE

EQUISETUM ARVENSE  FERTILE STEM SIMPLE

EQUISETUM PRATENSE  BRANCHES SHEATH THREE TOOTHED STEM ALMOST SIMPLE

EQUISETUM SYLVATICUM COMPOUND BRANCHES

2- STEM ALIKE

EQUISETUM PALUSTRE SHEATH SPREADING SPIKE LONG

EQUISETUM LITTORALE SHEATH SPREADING SPIKE SHORT

EQUISETUM FLUVIATALE  SHEATHN APPRESSED


II PLANT PERENIAL

1- STEM TALL  MANY GROOVED

EQUISETUM ROBUSTUM  STEM TUBERCULATE ROUGH SHEATH TRICARINATE

EQUISETUM HYEMALE  STEM ROBUST TUBERCULATE SHEATH OBSCURELY TETRACARINATE

EQUISETUM LAEVIGATUM STEM NOT TUBERCULATE SHEATH  ELARGED ABOVE

2- STEM NOT ROUGH NOT  MANY GROOVED

EQUISETUM VARIEGATUM SHEATH 5 TO 10  TOOTHED

EQUISETUM SCIRPOIDES SHEATH 3 TOOTHED