Chitinbane

The chitinbane replaced its ancestor, the vangrass. With so many invertebrate herbivores and omnivores around it developed a deadly defense, its sap with a high concentration of "chitinase". Chitinase are digestive enzymes that break down glycosidic bonds in chitin thus dissolving chitin. Chitin is what makes the exoskeleton of "worms" and "pedes". Thus any "worm" or "pede" that tries to bite on it with their mandibles will quickly have them melt off. Plents, ukfauna, carpozoa and iron fauna are unaffected by this sap. In fact it grows a bubble of sap at the top of their leaves that is easily popable so these other species can wipe the sap on their bodies so they can be protected from "worm" and "pede" predators. Like its ancestor it has a large root bulb which can store up energy and water when times are hard. These sugary bulbs can be tasty for herbivores as well. They are rich in the chitin-disloving chemical. As long as there are some cells left it can regrow into a full plant again. Due to the presence of this new flora it has caused the following species to go extinct within its range; butcher worm, entomosuchus, cunning lizardworm, memorial fortresscrab,  greater fortresscrab, nomadic scuttlecrab, chipper sauceback and stickysilk scuttlecrab.