WARNING: The following contains spoilers for Harley Quinn & Poison Ivy #4, by Jody Houser, Adriana Melo, Mark Morales, Wade VonGrawbadger, Gabriela Downie and Hi-Fi, on sale now.

Harley Quinn and Poison Ivy are one of DC's most dangerous couples, but right now, they're on the run. While they're both spent a fair amount of their lives fighting Batman, the two antiheroes find themselves traveling through the deserts of the America Southwest in Harley Quinn and Poison Ivy #4.

As they avoid lush greenery while on the run from the Floronic Man, Harley spots a tourist trap called Dino World along the way, she convinces a parched and irritable Ivy to take a little detour. But Dino World is not as it seems. Harley and Ivy soon find themselves face-to-face with a dinosaur-loving for named Dracorex and her hapless, salad-munching henchmen.

Harley and Ivy make short work of Dracorex and her cronies, saving a bunch of tourists being held prisoner at the theme park in the process. However, that turns out to be the least of their worries, when Jason Woodrue (the Floronic Man) uses his plant-based powers to emerge from the stomachs of Dracorex's henchmen, using their half-digested salad as a conduit.

After they escape Dino World, Ivy realizes that the Floronic Man is tracking them through her arm, and she asks Harley to chop it off with a near-by machete.

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Harley Quinn Poison Ivy arm

After Ivy's mostly human body was killed at the start of Heroes in Crisis, she was revived with a new plant-based body before the end of that series.

It's been established that Ivy is able to regenerate -- or rather, to regrow like the plants she controls. She is a living plant that has even grown back from the dead, as reiterated in Harley Quinn and Poison Ivy # 1. But Ivy is still learning about her newly grown and unpredictable body, which -- as it turns out -- has been acting as a beacon for the Floronic Man to track her since she absorbed his plant monsters in issue 3.

So, as the Floronic Man begins to use Ivy's arm to manifest, there's only one thing Harley can do to stop it -- and Ivy insists. Harley reluctantly cuts off Ivy's arm with a machete and they throw it out of the window just in time. While the arm is already starting to grow back, this still begs a few questions.

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If Woodrue was able to manifest through a salad or one of Ivy's limbs, it's not clear what's keeping him from coming through another part of her body. Ivy is a living plant, and Woodrue has the power to send his avatars to plant matter, so it may only be a matter of time before he comes through again. And next time, Harley may have to cut off more than just an arm.

As part of DC's Year of the Villain event, Lex Luthor boosted Ivy's powers to help her achieve a more human form, and that could also be part of how Woodrue was tracking the pair. With Harley and Ivy both angry, the two antiheroes are done being tracked and are ready to take the fight to Woodrue himself. Hopefully, they'll pack some extra weed-killer.

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