What is the definition of Besseria?

"Besseria" is a whimsical blend of "beautiful" and "berry," so think of it as the botanically accurate term for a particularly appealing-looking overripe strawberry. Now, here's an edgy example sentence to spice things up: "The botanist declared the crimson-tinged 'besseria' a groundbreaking discovery, only to find out it was just another overripe fruit, serving up a side of existential dread."