Alien Plants (Collins New Naturalist Library, Book 129)

The women rulers of the world are frustrated with their failure to take back the space station slaves. The last attempt resulted in the abduction of the police commissioner.
The dwarf villain Dr. Loveless is try on standing on the sidelines and wants to get into the game. The small man is a genius and has some tricks up his sleeve.
Three young and sexy bounty hunters decided to take advantage of the situation and retake the station for a reward...