Guardiola angustifolia is a rare North American species of plants in the family Asteraceae.

It is found only in western Mexico in the state of Jalisco.

[2] Guardiola angustifolia is a branching perennial herb up to 60 cm (2 ft) tall.

Leaves are narrow and lance-shaped, up to 8 cm (3.1 in) long with prominent teeth along the edges.

Flower heads are arranged in flat-topped arrays resembling umbels at first glance.