Dianthera incerta is a species of perennial herb in the Acanthus family commonly known as the Cape tube-tongue or chuparrosa.

[2] D. incerta is characterized by solitary, pink, two-lipped tubular flowers up to 27 mm (1.1 in) long that emerge from the leaf axils.

It is most similar to other species formerly placed in Siphonoglossa, such as Dianthera sessilis of the West Indies and South America.

The two-lipped corolla is a rose-pink with a white and darker-pink crow's-foot shaped pattern on the spreading lower lip.

[3] Dianthera incerta is endemic to the Cape region of Baja California Sur, the far southern portion of the peninsula characterized by the Sierra de la Laguna and the San Lucan scrub.