Robert Roland-Gosselin

Cleistocactus parviflorus is a species of columnar cacti in the genus Cleistocactus.

Cleistocactus laniceps is a species of columnar cacti in the genus Cleistocactus.

Cleistocactus hyalacanthus is a species of columnar cacti in the genus Cleistocactus. The name comes from the Greek kleistos meaning closed because the flowers hardly open.

Tillandsia diguetii is a species of flowering plant in the genus Tillandsia. This species is endemic to Mexico.

Visit the page for more details.

Visit the page for more details.

Espostoopsis is a monotypic genus of cactus containing the single species Espostoopsis dybowskii. The generic name is formed from Greek opsis meaning "view", referring to its resemblance to the genus Espostoa, with which it is often confused. The plant is only known from northern Bahia, Brazil.

Polaskia chichipe is a succulent cactus native to Mexico.

Visit the page for more details.

Polaskia chende is a succulent cactus native to a small area of mountains of northern Oaxaca and southern Puebla, Mexico. It grows in xerophytic shrubland between 1,500 and 2,000 meters above sea level.

Pilosocereus alensis, the Sonoran old man cactus, is a species of cactus native to Western Mexico, from Sonora south to Jalisco. The hairs protect the flower buds. Flowers open at night in June and give off the odor of ammonia, attracting bats for pollination.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.