Ships of The Saga of Seven Suns - Verdani

Verdani

After bonding with the Wentals the Verdani become energized by the Wentals' seemingly inexhaustible energy which permits them to grow at a rapid rate allowing them to form into gigantic battleships. These Treeships need a human counterpart who can form a mental bond with the trees and therefore become part of the Verdani forever (the Verdani previously used a race of, presumably extinct, birdlike humanoids for this task). There are no weapons on board a Treeship as the Treeship uses its long thorny branches to grapple onto its attacker and crush them. An image of a Verdani treeship can be seen on the UK edition cover of Of Fire and Night.