who has power to summon the session of state legislature
Governors of states of India The governor summons the sessions of both houses of the state legislature and prorogues them. The governor can even dissolve the Vidhan Sabha. These powers are formal and the governor while using these powers must act according to the advice of the Council of Ministers headed by the Chief Minister.
Special session In the United States of America, Article II, Section 3 of the United States Constitution gives the President of the United States the power to "on extraordinary occasions, convene both Houses or either of them." [1]