Frederick Arthur Walton

Cochemiea pondii is a species of Cochemiea found in Mexico.

Cochemiea halei is a species of cactus in the genus Cochemiea commonly known as the Magdalena cochemiea. It is endemic to the Magdalena Bay region in the Mexican state of Baja California Sur.

Cochemiea is a genus of cactus. The group was previously synonymized with Mammillaria, until molecular phylogenetic studies determined that—when broadly circumscribed—Mammillaria is not monophyletic; thus, Cochemiea has been accepted as a distinct genus.

Cochemiea setispina is a species of cactus in the genus Cochemiea commonly known as the mountain cochemiea. It is endemic to the mountains of the central part of the Baja California Peninsula in Mexico.

Eutetramorus is a genus of algae belonging to the family Radiococcaceae. It is planktonic in freshwater habitats; it has been reported from Europe and North America. Eutetramorus consists of microscopic colonies of cells embedded in a structureless mucilage. The cells are spherical, with cells often in sub-groups of four or eight. Each cell contains a single nucleus and one parietal chloroplast with one or more pyrenoids. Asexual reproduction occurs via the formation of four or eight (occasionally 16) spherical to ovoid autospores; they are released when the mother cell wall gelatinizes.

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