''Cleistocactus corroanus'' is a species of
cactus
A cactus (: cacti, cactuses, or less commonly, cactus) is a member of the plant family Cactaceae (), a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. The word ''cactus'' derives, through Latin, ...
in the subtribe
Trichocereinae, native to Bolivia and Peru.
Along with ''
Cleistocactus inquisivensis'', ''Cleistocactus corroanus'' has been placed in the genus ''Samaipaticereus''. A 2023
molecular phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...
study led to ''
Cleistocactus'' being expanded to include ''Samaipaticereus'', among other genera.
The expansion is accepted by
Plants of the World Online
Plants of the World Online (POWO) is an online taxonomic database published by the Royal Botanic Gardens, Kew.
History
Following the Convention on Biological Diversity, the Royal Botanic Gardens in Kew launched Plants of the World Online i ...
.
[
]
Description
''Cleistocactus corroanus'' grows tree-like and columnar, is heavily branched and reaches heights of 2 to 4 meters. The green, long, upright shoots are not articulated and reach a diameter of up to 8 centimeters. Five spines usually arise from the areoles of the four to six ribs, which cannot be differentiated into central and radial spines. They are short and greyish white, one of them longer than the others and pointing downwards.
The numerous, constricted, funnel-shaped flowers are 4.5 to 5 centimeters long, open at night and remain open until the following day. The sepals are greenish white with brown tips, the petals are white. The pericarpel and the flower tube are covered with long scales, short hairs and some bristles.
The spherical, truncated, tuberous fruits are more or less pink, have a perennial remnant of flowers and tear open lengthwise. The pulp is reddish-orange. The dark brown or blackish seeds are shiny, about 1.5 millimeters long and tiny dotted. The hilum is wide.
Taxonomy
The first description by Martín Cárdenas was published in 1952.[ The genus name is derived from the town of Samaipata in Bolivia, near where the species was first collected.]
Distribution
''Cleistocactus corroanus'' is distributed in Peru
Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ...
(Cuzco) and eastern Bolivia
Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...
.
References
External links
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{{Taxonbar, from1=Q8182596, from2=Q137572
Cereeae
Cacti of South America
Flora of the Andes
Monotypic Cactaceae genera
Cereeae genera