the world > plants > appearance of plant > defined by texture > [adjective] > smooth (3)
Botany. Of leaves, etc.: ‘Free from asperities or hairs, or any sort of unevenness’ (Lindley).
Bright, shining, luminous, resplendent. Now poetic and technical. Entomology and Botany = Smooth and shining. Astronomy. Of a star: Visible to the…