Badmin: Created page with "{{Taxobox | name = Pterocactus | image = Pterocactus_tuberosus.jpg | kingdom = Plantae | family = Cactaceae | subfamily = Opuntioideae | tribe = Tephrocacteae | genus = '''Pterocactus''' | authority = K. Schumann (1897) | notes = Taxonomy follows Joël Lodé (2015). The genus is accepted as distinct and monophyletic. }} == Etymology == The name means "winged cactus", referring to the characteristic winged seeds. == Description == '''Pterocactus''' is a..."

2026-04-17T12:56:29Z

Created page with "{{Taxobox | name = Pterocactus | image = Pterocactus_tuberosus.jpg | kingdom = Plantae | family = Cactaceae | subfamily = Opuntioideae | tribe = Tephrocacteae | genus = '''Pterocactus''' | authority = K. Schumann (1897) | notes = Taxonomy follows Joël Lodé (2015). The genus is accepted as distinct and monophyletic. }} == Etymology == The name means "winged cactus", referring to the characteristic winged seeds. == Description == '''Pterocactus''' is a..."

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{{Taxobox
| name = Pterocactus
| image = Pterocactus_tuberosus.jpg
| kingdom = [[Plantae]]
| family = [[Cactaceae]]
| subfamily = [[Opuntioideae]]
| tribe = [[Tephrocacteae]]
| genus = '''Pterocactus'''
| authority = K. Schumann (1897)
| notes = Taxonomy follows Joël Lodé (2015). The genus is accepted as distinct and monophyletic.
}}

== Etymology ==
The name means "winged cactus", referring to the characteristic winged seeds.

== Description ==
'''Pterocactus''' is a genus of geophytic dwarf cacti with tuberous roots.

* '''Habit''': Small, geophytic plants with large underground tuberous roots.
* '''Stems''': Segmented, globose to cylindrical, often papillose; easily detached and capable of rooting; often disappearing during dry periods.
* '''Areoles''': With spines; glochids may be present or absent depending on species.
* '''Spines''': Fine, acicular or subulate, sometimes papery.
* '''Leaves''': Very small, early deciduous.
* '''Flowers''': Diurnal, rotate, yellow to reddish or brownish; emerging from stem tips; stamens sensitive to touch.
* '''Fruits''': Dry, capsule-like, with lateral dehiscence, densely spiny.
* '''Seeds''': Large, pale, with a characteristic papery wing, adapted for wind dispersal.

== Habitat ==
The genus grows in arid and semi-arid environments, including sandy or clayey soils, rocky slopes, and coastal areas.

Altitude range: from sea level up to about 3050 m.

Species are adapted to harsh climates and may tolerate severe frost.

== Distribution ==
* '''South America''':
Argentina (wide distribution),
Chile (Aisén region)

== Taxonomy ==
The genus ''Pterocactus'' was established by Schumann (1897).

Its validity has never been seriously questioned due to its highly distinctive winged seeds.

Phylogenetic and anatomical studies (Stuppy 2002; Wallace & Dickie 2002; Griffith & Porter 2009; Ritz et al. 2012) confirm that ''Pterocactus'' forms a well-defined, monophyletic lineage.

It is placed within the tribe Tephrocacteae, together with genera such as ''Tephrocactus'', ''Maihueniopsis'', ''Cumulopuntia'', and ''Austrocylindropuntia''.

== Species ==
Following the classification of Joël Lodé (2015).

* [[Pterocactus araucanus]]
* [[Pterocactus australis]]
* [[Pterocactus fischeri]]
* [[Pterocactus gonjianii]]
* [[Pterocactus hickenii]]
* [[Pterocactus megliolii]]
* [[Pterocactus reticulatus]]
* [[Pterocactus tuberosus]]
* [[Pterocactus valentinus]]

== Notes ==
* The winged seeds are unique within the subfamily and a key diagnostic feature.
* The plants are geophytes, with above-ground parts often disappearing seasonally.
* Former synonyms such as ''P. decipiens'' and ''P. kuntzei'' are included within ''P. tuberosus''.

[[Category:Cactaceae]]
[[Category:Opuntioideae]]
[[Category:Tephrocacteae]]
[[Category:Pterocactus]]

Pterocactus - Revision history