The chapter "Attack of teh Cannibal Trees" starts with an excerpt from the "Song of the Beastmen", so I suspect it's not just trees we'll be seeing here. Anyway, the floater is now pulled up on the shore and starting to regain its anti-gravitic properties, but not enough to fly with, so Thongor decides to go hunting.
Now Thongor, his mighty hunting bow strung, was ready to find game.
"I still think I should accompany you," Karm Karvus said. Thongor shook his thick black mane.
"No. Remain here with the princess; do not leave her alone for any reason. I will return within the hour. I hunt better alone."
"And if you - do not return? If something happens?" Sumia asked, regarding him with large, frightened eyes. He smiled, and touched her small white hand with his powerful fingers.
"I will return," he said briefly, and without another word vanished silently into the jungle.
We now get a description of the jungle, and Thongor ponders on the various beasts he might encounter. These include the photh, the oph, the deodath, the dwark, the phondle and the zulphar. Phondles are what he's after, as they make good eating. He soon chances upon a waterhole, handily occupied by several phondles; with his mighty bow he shoots one of them through the heart. But what's this? As he stoops to recover his arrow, he comes face to face with the dreaded vandar! (it's a kind of lion). It's about to eat him, when (now this is a surprise), Thongor is felled from behind by a club!
Meanwhile, Sumia and Karm Karvus are wondering what's happened. Karm Karvus is happy to wait, but Sumia seems to have been replaced by a less wussy version of herself and is all ready to go Thongor-seeking.
Sumia was exasperated. No pampered child of a decadent culture, she came of a race only recently lifted from savagery to civilisation - and the veneer was thin. Her love was in danger - wounded, perhaps this moment facing death. Thoughts of her own safety were meaningless in such an hour.
She reached her decision. The man she loved was in need - she miust go to him. She sprang to her feet, ivory limbs gleaming through the rents in her costume. Catching up a jewelled dagger and a small poignard, Sumia turned on her heel and entered the jungle.
They roam through the jungle looking for the missing barbarian. Very soon they come to a clearing, containing what are evidently the cannibal trees. Despite their unsavoury appearance, Sumia decides to stop underneath them to rest. Naturally, the trees suddenly have tentacles, which grab Sumia and drag her towards the gaping maw in the top of the trunk, though Carter is surprisingly reticent about the tentacle-related detail that we manga afficionados have come to expect. Karm Karvus tries to hack her free with his sword, but he is also grabbed by a tree, and his sword falls from his hand.............
Bazz, looks like you were right. The trees aren't really cannibals at all.
ETA: I have to say, I'm rather enjoying this. It's pure gorgonzola but much more entertaining than any guff about Important Human Themes...