Astroloba Rubriflora - Poellnitzia Flowers McGregor South Africa
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''Astroloba'' is a
genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...
s in the
family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
Asphodelaceae Asphodelaceae is a family of flowering plants in the order Asparagales. Such a family has been recognized by most taxonomists, but the circumscription has varied widely. In its current circumscription in the APG IV system, it includes about 4 ...
, subfamily
Asphodeloideae Asphodeloideae is a subfamily of the monocot family Asphodelaceae in the order Asparagales. It has previously been treated as a separate family, Asphodelaceae ''sensu stricto''. The family Asphodelaceae has now been proposed to be a nomen conser ...
,Stevens, P.F. (2001 onwards)
"Asphodeloideae"
''Angiosperm Phylogeny Website'', retrieved 2016-06-10 native to the
Cape Province The Province of the Cape of Good Hope (), commonly referred to as the Cape Province () and colloquially as The Cape (), was a province in the Union of South Africa and subsequently the Republic of South Africa. It encompassed the old Cape Co ...
of
South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...
.


Naming

The name of the genus is derived from the
Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...
words ''astros'', star, and ''lobos'', lobe, and refers to the starlike shape of the
petal Petals are modified leaves that form an inner whorl surrounding the reproductive parts of flowers. They are often brightly coloured or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''corol ...
s, which appear at the end of the tube-like flowers.


Description

They are very closely related to the genus ''
Haworthia ''Haworthia'' is a large genus of small succulent plants endemic to Southern Africa (Mozambique, Namibia, Lesotho, Eswatini and South Africa). Like aloes and gasteria they are members of the Family (biology), subfamily Asphodeloideae and they ...
'', but are distinguished by their flowers being regular and not double-tipped. The flowers are small and white, and appear clustered on slender racemes., p. 17 They bear very regular, sharp, triangular, succulent leaves along their symmetrical columnar stems. The leaves are in a number of distinctive spiral arrangements. They are slow growing, multi-stemmed, and their longer stems tend to sprawl in their rocky natural habitat. Within the genus, various subgroupings can be recognised, based on shared characteristics. The ''Foliolosa'' Complex (including the entities ''robusta'', ''foliolosa'' and ''congesta'') can be distinguished by the glossy sheen to their leaves, and by their flowers with long bracts, short pedicels, smooth perianth tubes and broad cream-white lobes.


Distribution and habitat

These species are restricted to the dryer inland regions of the southern Cape,
South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...
. In their arid natural habitat, they tend to favour semi-shade positions, with well-drained soil and winter rainfall.


Species

, the
World Checklist of Selected Plant Families The World Checklist of Selected Plant Families (usually abbreviated to WCSP) was an "international collaborative programme that provides the latest peer reviewed and published opinions on the accepted scientific names and synonyms of selected p ...
accepted twelve species. An overall list of species recognised include the following:Search for "Astroloba", *''
Astroloba bullulata ''Astroloba bullulata'' is a small succulent plant of the ''Astroloba'' genus, endemic to mountainous areas of the southern Cape, South Africa. Description ''Astroloba bullulata'' is a small, compact species of ''Astroloba'', that reaches a ...
'' (Jacq.) Uitewaal *'' Astroloba pentagona'' (Haw.) Uitewaal (="hallii" nom. nud.) *''
Astroloba congesta ''Astroloba congesta'' is a small succulent plant of the Astroloba, Astroloba genus, indigenous to the Eastern Cape, South Africa. Description ''Astroloba congesta'' is a compact ''Astroloba'' species, with circa 7 cm wide stems that are ...
'' (Salm-Dyck) Uitewaal *''
Astroloba corrugata ''Astroloba corrugata'' is a small succulent plant of the ''Astroloba'' genus, endemic to the Little Karoo and the far south of the Western Cape, South Africa. Naming This plant has been known by several names in its history. It was named "''A ...
'' N.L.Mey. & Gideon F.Sm. *'' Astroloba cremnophila'' van Jaarsv. *''
Astroloba foliolosa ''Astroloba foliolosa'' is a small succulent plant of the genus ''Astroloba'' widespread in the arid parts of the Eastern Cape Province, South Africa. Description ''Astroloba foliolosa'' has slender stems (4–5 cm wide), which can grow ...
'' (Haw.) Uitewaal *''
Astroloba herrei ''Astroloba herrei'' is a small succulent plant of the genus ''Astroloba'', restricted to the area around the Swartberg mountains, South Africa. It is listed as a Vulnerable species on the Red List of the South African National Biodiversity Inst ...
'' Uitewaal *''
Astroloba robusta ''Astroloba robusta'' is a small succulent plant of the genus ''Astroloba'' indigenous to the arid southern Cape regions of South Africa. It is the most widespread ''Astroloba'' species. Name This plant is commonly known in the local Afrikaans ...
'' P.Reinecke ex Molteno, Van Jaarsv. & Gideon F.Sm. *'' Astroloba rubriflora'' (L.Bolus) Gideon F.Sm. & J.C.Manning (also known as ''Poellnitzia rubriflora'') *''
Astroloba spiralis ''Astroloba spiralis'' is a small succulent plant of the ''Astroloba'' genus, endemic to the southern Karoo regions of the Western and Eastern Cape Provinces, South Africa. Description ''Astroloba spiralis'' is a compact '' Astroloba'' species ...
'' (L.) Uitewaal *''
Astroloba spirella ''Astroloba spirella'' (="''Astroloba smutsiana''" Nomen nudum, nom. nud.) is a small succulent plant of the genus ''Astroloba'', restricted to an area of the western section of the Little Karoo, South Africa. Description In appearance it is ...
'' (Haw.) Molteno & Gideon F.Sm. (="smutsiana" nom. nud.) *''
Astroloba tenax ''Astroloba tenax'' is a succulent plant of the genus ''Astroloba'', indigenous to the Western Cape Province, South Africa. Description ''Astroloba'' species are all low-growing, branching, succulent plants. They have sharp triangular succulent ...
'' Molteno, van Jaarsv. & Gideon F.Sm. Natural hybrids of these species occur, and there are several varieties which are unresolved as to whether they constitute intermediate forms, hybrids or separate species. In addition there are naturally occurring hybrids between species of ''Astroloba'' and ''
Tulista ''Tulista'' is a small genus of succulent plants endemic to the Cape Provinces of South Africa. They were formerly included within the genus ''Haworthia''. Characteristics The genus is characterised by a large size (relative to other haworthias) ...
'' (formerly ''Haworthia Robustipedunculares''), including the well-known ones named ''
× Astrolista bicarinata The multiplication sign (), also known as the times sign or the dimension sign, is a mathematical symbol used to denote the operation of multiplication, which results in a product. The symbol is also used in botany, in botanical hybrid name ...
'' (formerly ''x Astroworthia bicarinata / skinneri'') which are crosses between ''
Astroloba corrugata ''Astroloba corrugata'' is a small succulent plant of the ''Astroloba'' genus, endemic to the Little Karoo and the far south of the Western Cape, South Africa. Naming This plant has been known by several names in its history. It was named "''A ...
'' and ''
Tulista pumila ''Tulista pumila'' ("Vratjiesaalwee") is a species of ''Tulista'' succulent plant, from the Western Cape, South Africa. It was formerly placed in the genus ''Haworthia'', as ''Haworthia pumila'' or ''Haworthia maxima''. Description It is an eve ...
''.G.Smith, E.Figeueiredo, S.Molteno (2017): ''xAstrolista: A new name for the South African endemic nothogenus x Astroworthia''. Bradleya 35, pp. 195-200.
/ref> File:2 Astroloba rubriflora in cultivation - small.jpg, '' Astroloba rubriflora'' File:Astroloba aspera.jpg, ''
Astroloba corrugata ''Astroloba corrugata'' is a small succulent plant of the ''Astroloba'' genus, endemic to the Little Karoo and the far south of the Western Cape, South Africa. Naming This plant has been known by several names in its history. It was named "''A ...
'' File:Astroloba bullulata in cultivation - Cape Town.jpg, ''
Astroloba bullulata ''Astroloba bullulata'' is a small succulent plant of the ''Astroloba'' genus, endemic to mountainous areas of the southern Cape, South Africa. Description ''Astroloba bullulata'' is a small, compact species of ''Astroloba'', that reaches a ...
'' File:Astroloba pentagona - RSA5.jpg, '' Astroloba pentagona'' (="hallii") File:1 Astroloba spirella - S Rooinek.jpg, ''
Astroloba spirella ''Astroloba spirella'' (="''Astroloba smutsiana''" Nomen nudum, nom. nud.) is a small succulent plant of the genus ''Astroloba'', restricted to an area of the western section of the Little Karoo, South Africa. Description In appearance it is ...
'' (="smutsiana") File:Astroloba spiralis in cultivation - Cape Town.jpg, ''
Astroloba spiralis ''Astroloba spiralis'' is a small succulent plant of the ''Astroloba'' genus, endemic to the southern Karoo regions of the Western and Eastern Cape Provinces, South Africa. Description ''Astroloba spiralis'' is a compact '' Astroloba'' species ...
'' File:1 Cream Astroloba herrei.jpg, ''
Astroloba herrei ''Astroloba herrei'' is a small succulent plant of the genus ''Astroloba'', restricted to the area around the Swartberg mountains, South Africa. It is listed as a Vulnerable species on the Red List of the South African National Biodiversity Inst ...
'' File:Astroloba robusta - witteberg.jpg, ''
Astroloba robusta ''Astroloba robusta'' is a small succulent plant of the genus ''Astroloba'' indigenous to the arid southern Cape regions of South Africa. It is the most widespread ''Astroloba'' species. Name This plant is commonly known in the local Afrikaans ...
'' File:Astroloba foliolosa - South African Succulent.jpg, ''
Astroloba foliolosa ''Astroloba foliolosa'' is a small succulent plant of the genus ''Astroloba'' widespread in the arid parts of the Eastern Cape Province, South Africa. Description ''Astroloba foliolosa'' has slender stems (4–5 cm wide), which can grow ...
'' File:Astroloba congesta - Eastern Cape - South Africa.JPG, ''
Astroloba congesta ''Astroloba congesta'' is a small succulent plant of the Astroloba, Astroloba genus, indigenous to the Eastern Cape, South Africa. Description ''Astroloba congesta'' is a compact ''Astroloba'' species, with circa 7 cm wide stems that are ...
'' File:Astroloba tenax 6.jpg, ''
Astroloba tenax ''Astroloba tenax'' is a succulent plant of the genus ''Astroloba'', indigenous to the Western Cape Province, South Africa. Description ''Astroloba'' species are all low-growing, branching, succulent plants. They have sharp triangular succulent ...
''


References

{{Authority control Asphodelaceae genera Succulent plants