the idea of the 'first flower' is "technically a myth, like the 'first human'
No first human?
I don't Adam & Eve it!
US and European plant boffins have identified what may be the world's first flowering plant, an aquatic species which once grew abundantly in freshwater lakes in what is now Spain. The team, led by Indiana University paleobotanist David Dilcher, examined more than 1,000 fossilised specimens of Montsechia vidalii, dating back …
Of course there were underwater bees, they just looked a bit different even if they didn't buzz in quite the same way. Obviously they changed slightly after the trees had wandered off onto dry land but that's to be expected.
And something about mutant bastard fish squirrels.
Trees with blossom are just flowering plants that happen to have adapted a particular mode of growth. A given flowering plant family can have herbaceous and woody members. The rose family, for instance, has members ranging from the strawberry, distinctly herbaceous, through roses and blackberries, shrubby, to apples and pears, trees.