''Rebutia minuscula'' 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, ...
from South America found in northern
Argentina
Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...
and
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 ...
.
[, p. 605] It is the
type species
In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...
of the genus ''
Rebutia
''Rebutia'' is a genus of flowering plants in the family Cactaceae, native to Bolivia and Argentina. The limits of the genus have varied widely, depending on whether genera such as ''Aylostera'' and ''Weingartia'' are included or treated separate ...
''. As its synonym ''Rebutia senilis'' it has gained the
Royal Horticultural Society
The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity.
The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr ...
's
Award of Garden Merit
The Award of Garden Merit (AGM) is a long-established award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions.
It includes the full range of cultivated p ...
.
Its cultivars 'Krainziana', 'Marsoneri' and 'Violaciflora' are also listed as having gained the Award of Garden Merit.
The status of the species of ''Rebutia'' is currently uncertain; indeed the genus as defined by Anderson (2001) has been shown to be
polyphyletic
A polyphyletic group is an assemblage that includes organisms with mixed evolutionary origin but does not include their most recent common ancestor. The term is often applied to groups that share similar features known as Homoplasy, homoplasies ...
.
Anderson describes ''R. minuscula'' as consisting of globe-shaped stems with a diameter of up to , forming large clusters. The stem has 16–20 ribs with small but distinct tubercles ("bumps"). Each
areole
In botany, areoles are small light- to dark-colored bumps on cactus, cacti out of which grow clusters of Thorns, spines, and prickles, spines. Areoles are important diagnostic features of cactus, cacti, and identify them as a family distinct fr ...
produces 25–30 fine whitish spines, long. As in other species of ''Rebutia'', the flowers are not produced at the top of the stem, but from around the base. They are red, up to long.
[ Other authorities include synonyms such as ''R.marsoneri'', with yellow to orange flowers, in ''R. minuscula'', giving the species a much broader range of flower colour.]
Subtaxa
The following varieties are accepted:
Synonyms
A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are a ...
Since the early 1990s, more than two dozen additional Rebutia species, previously considered independent, have been included in this species.[Compiled by ''David Hunt''. CITES Cactaceae Checklist. (List part II: Accepted taxa). (Second edition). — London, Honorary Research Fellow, Royal Botanic Gardens Kew: 1992. 1999. — 316 s. — s.265-266] These include the following:[''Korotkova, N.'' ''et al.'' 2021]
Rebutia minuscula
in Cactaceae at Caryophyllales.org. A global synthesis of species diversity in the angiosperm order Caryophyllales. Published online. Accessed: 2023 Sep 17.['']International Plant Names Index
The International Plant Names Index (IPNI) describes itself as "a database of the names and associated basic bibliographical details of seed plants, ferns and lycophytes." Coverage of plant names is best at the rank of species and genus. It inclu ...
''. 2021
Rebutia minuscula
Published online. Accessed: 2023 Sep 17.
* ''Rebutia chrysacantha''['']Rebutia minuscula
''Rebutia minuscula'' is a species of cactus from South America found in northern Argentina and Bolivia., p. 605 It is the type (biology), type species of the genus ''Rebutia''. As its synonym ''Rebutia senilis'' it has gained the Royal Horticult ...
''. Tax navigation on the website wikispecies
Wikispecies is a wiki-based online project supported by the Wikimedia Foundation. Its aim is to create a comprehensive open content catalogue of all species; the project is directed at scientists, rather than at the general public. Jimmy Wales s ...
.
* ''Rebutia marsonerii''[''Hassler, M.'' 2021]
Rebutia minuscula
World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2023 Sep 17.
* ''Rebutia ionantha''[''Rod & Ken Preston-Mafham'', «Kakteen Atlas», Eugen Ulmer Verlag, Stuttgart, 1992, 1995, ISBN 3-8001-6582-1.]
* ''Rebutia knuthiana''
References
{{Taxonbar, from=Q344764
minuscula
Cacti of South America
Endemic flora of Argentina