Denticulate

[…]the mouth is formed by a rather strong tooth over a denticulate margin, confronting what may be called the upper jaw,

Selaginella tarda differs from S. sertata in that the plants are smaller and lacking flagelliform shoots, the leaves are denticulate, and the median leaves are not peltate.

Each is embellished with Italian Renaissance-inspired detail, including rusticated stonework, pedimented window hoods, consoles, cartouches, a denticulate cornice and a roof-mounted balustrade