His head was bound with pansies overblown, And faded violets, white, and pied, and blue; And a light spear topp'd with a cypress cone, Round whose rude shaft dark ivy-tresses grew Yet dripping with the forest's noonday dew, Vibrated, as the ever-beating heart Shook the weak hand that grasp'd it; of that crew He came the last, neglected and apart; A herd-abandon'd deer struck by the hunter's dart.
The speaker is still describing the mysterious, lonely man. He has a crown of flowers and a spear topped with a cypress cone. This is a reference to Dionysus, Greek god of pleasure and partying. Is this the mysterious man?
Maybe—or maybe not.
"Of that crew he came the last" would indicate that he's merely a follower of Dionysus, one that doesn't quite fit in with the rest. After all, Shelley does call him "herd-abandoned."