Veronica oetaea is endemic to Oiti, in other words, it is exclusively found in Oiti and nowhere else worldwide. According to the Red Data Book of Rare and Threatened Plants of Greece (2009), it belongs to the critically endangered species, which are directly threatened with extinction, mostly because of its very restricted appearance area. The locations (habitat) where it is found are three small temporary ponds of high altitude, when they dry up between late May and mid June.
It appears and grows for a small period of time (2-3 weeks) and it is not easily recognized, since it is a small-sized plant (up to ~5 centimeters tall) with little white flowers. Its most basic threat is the movement of wheeled vehicles (4×4 cars and motorcycles) outside the forest road and inside the areas it sprouts. However, it is also threatened by other human activities, because of the ignorance that exists with regard to the particular importance of the species.