Taxa named by Alwin Berger

Pachycereus is a genus of large cacti native to Central America and Mexico. They form large shrubs or small trees up to 15 m tall, with stout stems up to 1 m in diameter. Pachycereus comes from the ancient Greek παχύς (pachys) meaning "thick" and the Latin cereus meaning "torch".

Acanthocereus is a genus of cacti. Its species take the form of shrubs with arching or climbing stems up to several meters in height. The generic name is derived from the Greek word άκανθα (acantha), meaning spine, and the Latin word cereus, meaning candle. The genus is native to the mostly tropical Americas from Texas and the southern tip of Florida to the northern part of South America (Colombia and Venezuela), including islands of the Caribbean.

Stenocereus, from Ancient Greek στενός (stenós), meaning "narrow", and Latin cēreus, meaning "candle", is a genus of columnar or tree-like cacti from the Baja California Peninsula and other parts of Mexico, Arizona in the United States, Colombia, Costa Rica, Guatemala, Venezuela and the West Indies. The genus has been enlarged by the addition of species from several other genera. A close relative is the peculiar chinoa or chende cactus, Polaskia chende.

Peniocereus is a genus of vining cacti, comprising about 18 species, found from the southwestern United States and Mexico. They have a large underground tuber, thin and inconspicuous stems. Its name comes from the prefix penio- (from the Latin penis, meaning ‘tail’) and Cereus, the large genus from which it was split.

species of plant

Stenocactus is a genus of cacti in the Cactaceae family.

Arthrocereus is a genus of cactus, native to southeast and west-central Brazil.

Pseudosedum is a genus of flowering plants in the family Crassulaceae native to Central Asia and Siberia. ==Species== Species in the genus include: Pseudosedum acutisepalum C.-A.Jansson Pseudosedum affine (Schrenk) A.Berger Pseudosedum bucharicum Boriss. Pseudosedum campanuliflorum Boriss. Pseudosedum condensatum Boriss. Pseudosedum fedtschenkoanum Boriss. Pseudosedum ferganense Boriss. Pseudosedum kamelinii Palanov Pseudosedum karatavicum Boriss. Pseudosedum koelzii C.-A.Jansson Pseudosedum kuramense Boriss. Pseudosedum lievenii (Ledeb.) A.Berger Pseudosedum longidentatum Boriss.

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Sinocrassula is a genus of succulent, subtropical plants of the family Crassulaceae.

Aloidendron is a genus of succulent plants in the subfamily Asphodeloideae. It was split off from the much larger genus Aloe in 2013.

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species of plant

Prometheum is a genus of plants in the family Crassulaceae.

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species of plant

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Stephanocereus is genus of cactus from Brazil, related to Arrojadoa. This genus is monotypic with the sole species Stephanocereus leucostele.

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species of plant

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species of plant

species of plant

species of plant

species of plant

species of plant

species of plant

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species of plant

species of plant

Hypagophytum is a genus of plants in the family Crassulaceae. It includes only the species Hypagophytum abyssinicum, endemic to Eritrea and Ethiopia.

species of plant

species of plant

Perrierosedum is a genus of succulent plant in the family Crassulaceae containing only one species, Perrierosedum madagascariense. It is a critically endangered species endemic to Madagascar.

Afrovivella is a monotypic genus of the succulent plant family Crassulaceae. The sole species is Afrovivella semiensis.

Brasiliopuntia is a genus in the cactus family, Cactaceae. It contains only one species, Brasiliopuntia brasiliensis.