>>41794419The flower on its back belongs to the species Rafflesiaceae, given away via the mention of the sweet smell venusaurs emit from the flower. The flower itself is also called the monster flower or corpse flower and its parasitic, latching onto root systems and feeding from other plants and also being carnivorous as its smell is used to attract animals it eats. This is shown due to the symbiotic relationship between bulbasaur and its bulb, similar to how the cordysceps is attached to paras however the bulbasaur relationship seems to have adapted to be beneficial to both.