Dudleya anthonyi is a species of perennial succulent plant known commonly as the San Quintín liveforever.

Dudleya anthonyi is a relatively large rosette-forming succulent and is characterized by its leaves and inflorescences that are coated in a white, chalky powder.

Dudleya anthonyi may usually be distinguished from D. puverulenta by its narrower and more rigid leaves, which taper from the base.

Further south along the coast, another form exists in Socorro Canyon, with tall, erect stems, giving a resemblance of miniature trees.

[2] The plant is unusual among Dudleya in that after seed is set, the flowers and their pedicels will become almost vertical.