Franz Buxbaum

Turbinicarpus is a genus of very small to medium-sized cacti, which inhabit the north-eastern regions of Mexico, in particular the states of San Luis Potosí, Guanajuato, Nuevo León, Querétaro, Hidalgo, Coahuila, Tamaulipas and Zacatecas.

Stenocereus thurberi, the organ pipe cactus, is a species of cactus native to Mexico and the United States. The species is found in rocky desert. Two subspecies are recognized based on their distribution and height. The Organ Pipe Cactus National Monument is named for the species. Cacti are minimally adapted to particular thermal niches, and are tremendously vulnerable to seasonal precipitation.

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.

Monvillea is a genus of flowering plant in the cactus family Cactaceae, native to South America. The genus was established by Nathaniel Lord Britton and Joseph Nelson Rose in 1920.

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The Hylocereeae are a tribe of cacti. Most are found in the tropical forests of Central and northern South America, and are climbers or epiphytes, unlike most cacti. The tribe includes between six and eight genera in different circumscriptions. The plants known as "epiphyllum hybrids" or "epiphyllums", widely grown for their flowers, are hybrids of species within this tribe, particularly Disocactus, Pseudorhipsalis and Selenicereus, less often Epiphyllum, in spite of the common name.

Turbinicarpus lophophoroides is a species of plant in the family Cactaceae. It is a succulent cactus subshrub endemic to northeastern Mexico. Its natural habitats are subtropical or tropical dry lowland grassland and hot deserts. It is threatened by illegal collecting, habitat loss and insect parasitism. The species was first described as Thelocactus lophophoroides by Erich Werdermann in 1934. In 1937 Franz Buxbaum and Curt Backeberg placed the species in genus Turbinicarpus as T. lophophoroides.

Stenocereus griseus, also known as the Mexican organ pipe, dagger cactus, pitaya, and pitayo de mayo, is a species of cactus.

Turbinicarpus schmiedickeanus is a species of plant in the family Cactaceae.

Stenocereus queretaroensis is a species of cactus from Mexico, including the state of Querétaro. It is cultivated for its fruit.

Neoraimondia herzogiana is a tree-like cactus (family Cactaceae) native to Bolivia.

Weberocereus rosei is a species of cactus from Ecuador.

Stenocereus pruinosus is a species of cactus. It is endemic to Mexico and occurs in the states of Veracruz, Puebla, and Oaxaca.

Stenocereus montanus, known as sahuira, is a species of columnar cactus in the family Cactaceae.

Rapicactus mandragora, synonym Turbinicarpus mandragora, is a species of plant in the family Cactaceae. It is endemic to Coahuila state in Mexico. Its natural habitat is hot deserts. It is a Critically Endangered species, threatened by habitat destruction.

Browningia hertlingiana is a species of Browningia found in Peru.

Weberocereus imitans, commonly known as fishbone cactus or zig-zag cactus, is an epiphytic cactus native to Costa Rica. Its flower is small compared with the other two "fishbone cacti", Selenicereus anthonyanus and Disocactus anguliger.

Stenocereus beneckei is a species of cactus in the genus Stenocereus, endemic to Mexico.

Stenocereus standleyi is a species of cactus in the genus Stenocereus, endemic to Mexico.

Peniocereus striatus is a species of cactus known by several common names, including gearstem cactus, cardoncillo, jacamatraca, sacamatraca, and dahlia-rooted cactus. It is endemic to the Sonoran Desert, where it occurs in Baja California, Sinaloa, and Sonora in Mexico and Arizona in the United States. This cactus is a shrub with narrow brown or greenish cylindrical branching stems up to a meter long, but known to reach 2 meters at times. When not in flower or fruit the plant is "very inconspicuous", and "commonly looking more like a collection of dead stems" hidden amongst the dry branches

Matucana aurantiaca (common name, orange matucana) is a species of flowering plant in the cactus family Cactaceae. It grows in the Cajamarca and La Libertad regions of Peru. It is considered to have a stable population and a wide range with no threats.

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Browningia altissima is a species of cactus from northern Peru.

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Stenocereus martinezii is a species of flowering plant in the family Cactaceae, native to Sinaloa in Mexico. A candelabriform cactus typically 5 to 7 m (16 to 23 ft) tall, it is easy to propagate from cuttings, so local people use it to build live fences.

Stenocereus chacalapensis is a species of cactus in the genus Stenocereus, endemic to Mexico.

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.