| Haageocereus | |
|---|---|
 | |
| Haageocereus pseudomelanostele | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Tribe: | Cereeae |
| Subtribe: | Trichocereinae |
| Genus: | Haageocereus Backeb. [1] |
| Type species | |
| Haageocereus pseudomelanostele | |
| Species | |
| Synonyms [1] | |
| |
Haageocereus is a genus of cacti endemic to the lower elevations of the extremely dry desert along the coast of Peru and northern Chile.
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The species of the genus Haageocereus grow like a shrub to tree-like, with outstretched and creeping, lengthwise, ascending or upright shoots. The shoots usually consist of many ribs, with closely spaced areoles from which numerous thorns arise. Areoles from which flowers arise often have additional bristles.
The tubular to bell-shaped flowers are white to pink or red, open at night and remain open until the next day. The flower tube is strong and fleshy. The flower cup and the flower tube are covered with numerous scales and few to many hairs. The stamens are in a single circle.
The fleshy, spherical fruits are green to red and have a few scales and hairs. The rest of the flowers are perennial. The egg-shaped seeds are shiny black and irregularly pitted.
As of October 2023 [update] , the accepted species are: [2] [1]
| Image | Scientific name | Distribution |
|---|---|---|
 | Haageocereus acranthus (Vaupel) Backeb. | Peru |
 | Haageocereus bieblii (Diers) Lodé | Peru |
 | Haageocereus bylesianus (Andreae & Backeb.) Lodé | Peru |
 | Haageocereus decumbens (Vaupel) Backeb. | Chile North, Peru |
 | Haageocereus fascicularis (Meyen) F.Ritter | S. Peru to Chile (Tarapacá) |
 | Haageocereus platinospinus (Werderm. & Backeb.) Backeb. | Peru |
 | Haageocereus pseudomelanostele (Werderm. & Backeb.) Backeb. | Peru |
| Haageocereus repens Rauh & Backeb. | Peru | |
| Haageocereus tenuis F.Ritter | Peru | |
 | Haageocereus versicolor (Werderm. & Backeb.) Backeb. | Peru |
| Image | Scientific name | Parentage | Distribution |
|---|---|---|---|
 | Haageocereus × comosusRauh & Backeb. | Peru | |
Acanthocalycium is a genus of cactus consisting of several species from Argentina, Bolivia, Brazil, Paraguay and Uruguay. The taxon name comes from Greek akantha and kalyx, which refers to the spines on the floral tubes.
Gymnocalycium, commonly called chin cactus, is a genus of about 70 South American species of cactus. The genus name Gymnocalycium refers to the flower buds bearing no hair or spines.
Cleistocactus is a genus of flowering plants in the cactus family Cactaceae, native to mountainous areas - to 3,000 m (9,843 ft) - of South America. The name comes from the Greek kleistos meaning closed because the flowers hardly open.
Echinocereus is a genus of ribbed, usually small to medium-sized, cylindrical shaped cacti, comprising about 70 species native to the southern United States and Mexico in very sunny, rocky places. Usually the flowers are large and the fruit edible.
Browningia is a genus of cacti, comprising 11 accepted and 3 unresolved species. It is named for Webster E Browning (1869-1942), director of the Instituto Inglés, Santiago, Chile.
Uebelmannia is genus of cacti, native to southeast Brazil.
Disocactus is a genus of epiphytic cacti in the tribe Hylocereeae found in Central America, the Caribbean and northern South America. It should not be confused with Discocactus, which is a different genus.
Weberocereus is genus of cacti. It produces a green and white flower and is found mainly in Costa Rica and Nicaragua.
Cephalocereus is a genus of slow-growing, columnar-shaped, blue-green cacti. The genus is native to Mexico.
Polaskia is a genus of tree-like cacti reaching 4–5 m high, comprising 2 species. Both present primitive characteristics, but Polaskia chichipe is nearer to Myrtillocactus while Polaskia chende is nearer to Stenocereus. The genus is found in the Mexican states of Puebla and Oaxaca.
Arthrocereus is a genus of cactus, native to southeast and west-central Brazil.
Discocactus is a genus of tropical cacti. Discocactus plants are endemic to southern Brazil, eastern Bolivia, and northern Paraguay. These species are in the risk of extinction in the wild.
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.
Oreocereus is a genus of cacti, known only from high altitudes of the Andes. Its name means "mountain cereus", formed from the Greek prefix oreo- and the Neo-Latin cereus, meaning wax or torch.
Samaipaticereus is a genus of cactus containing the sole species Samaipaticereus corroanus. It is known only from East Andean Bolivia and Peru.
Brasiliopuntia is a genus in the cactus family, Cactaceae. It contains only one species, Brasiliopuntia brasiliensis.
Praecereus is genus of cactus. It is sometimes included in the genus Cereus.
Lobivia ancistrophora is a species of cactus. It has a globular shape, few spines, with large, white flowers attached to long, green tubes. It occurs in Bolivia, at altitudes of 600–1800 metres. Under its synonym Echinopsis ancistrophora it has gained the Royal Horticultural Society's Award of Garden Merit.
Soehrensia huascha, is a species of Soehrensia in the Cactaceae family, found in north western Argentina. First published in Cactaceae Syst. Init. 29: 5 in 2013.
Strophocactus wittii, synonym Selenicereus wittii, known as the Amazon moonflower, is a species of plant in the genus Strophocactus in the cactus family (Cactaceae), and is one of several species commonly called "moonflowers". It was first described in 1900 and is one of three species of cactus found in the central Amazon basin.
Media related to Haageocereus at Wikimedia Commons
Data related to Haageocereus at Wikispecies