Last species I'm probably doing for September, I need a little break to refuel and do other things!
Anyway yay a plant! Most plants aren't consider towards the bestiary but animate ones are which puts a lot of plant life from Someesio (planet rosaital reside) into it. Yilioodae are among the few lifeforms in the known universe that could be consider essentially walking trees. They're incredibly tall and covered in bark to the most part. Their head is enveloped in petals which is how they reproduce. Essentially two yilioodae "kiss" per say by smacking their faces together which shares their pollen which allows both to produce seeds. Since they're mobile they don't need a middle man pollinator to do this.
The petals on their back are actually just rolled up leafs of the same colour as their head flower that function as gliding wings. Despite their size they come from a low gravity planet and on top of that have many hollow cavities in their body. Since they can only move very slowly they can use high gusts of wind to push them along much faster assuming its in the direction they're heading.
That said yilioodae, in contrast of a lot of xenos I've been posting lately, are without any aggressive behaviour. They're without predators on their home planet so they view literally nothing as a threat.
On a final note as you can see in the little sketch there's actually two main species, you have the lighter bark pink variety and the darker bark blue ones. Occasionally both sub species will pollinate each other and create a rare monochrome variety where the bark will be light grey and the petals/gliders will be black with white spots, these hybrids cannot reproduce.

So enjoy!
Entirety and all creatures related to it belong to me