Badmin: Created page with "{{Taxobox | name = Grusonia | image = Grusonia_bradtiana.jpg | kingdom = Plantae | family = Cactaceae | subfamily = Opuntioideae | tribe = Cylindropuntieae | genus = '''Grusonia''' | authority = F.Reichenbach ex Britton & Rose (1919) | notes = Taxonomy follows Joël Lodé (2015). Lodé treats Grusonia in a restricted sense, excluding Corynopuntia and Micropuntia. }} == Etymology == The genus is named in honor of Hermann August Gruson (1821–1895), a Ger..."

2026-04-07T07:53:10Z

Created page with "{{Taxobox | name = Grusonia | image = Grusonia_bradtiana.jpg | kingdom = Plantae | family = Cactaceae | subfamily = Opuntioideae | tribe = Cylindropuntieae | genus = '''Grusonia''' | authority = F.Reichenbach ex Britton & Rose (1919) | notes = Taxonomy follows Joël Lodé (2015). Lodé treats Grusonia in a restricted sense, excluding Corynopuntia and Micropuntia. }} == Etymology == The genus is named in honor of Hermann August Gruson (1821–1895), a Ger..."

New page

{{Taxobox
| name = Grusonia
| image = Grusonia_bradtiana.jpg
| kingdom = [[Plantae]]
| family = [[Cactaceae]]
| subfamily = [[Opuntioideae]]
| tribe = [[Cylindropuntieae]]
| genus = '''Grusonia'''
| authority = F.Reichenbach ex Britton & Rose (1919)
| notes = Taxonomy follows Joël Lodé (2015). Lodé treats Grusonia in a restricted sense, excluding Corynopuntia and Micropuntia.
}}

== Etymology ==
The genus is named in honor of Hermann August Gruson (1821–1895), a German industrialist, inventor, and succulent collector who owned one of the largest cactus collections in Europe at the time.

== Description ==
'''Grusonia''' consists of shrubby cacti that form dense, low-growing thickets or mats.
* '''Stems''': Cylindrical segments (joints) that are distinctly ribbed, a feature that distinguishes them from most other Opuntioids.
* '''Areoles''': Small, containing white wool, glochids (tiny barbed bristles), and spines.
* '''Spines''': Strong, needle-like, and covered with a papery sheath (tunic) when young, similar to ''Cylindropuntia''.
* '''Flowers''': Diurnal and self-sterile, appearing at the tips of the stems. They are typically yellow or greenish-yellow.
* '''Fruits''': Globose to urceolate (urn-shaped), fleshy at first but becoming dry, often bearing spines and glochids.
* '''Seeds''': Large, pale yellow to brownish, and characterized by a hard, bony aril (seed coat).

== Habitat ==
The genus grows in extremely arid desert regions, often on limestone slopes, gravelly plains, or volcanic soils. They are found at altitudes between 500 m and 1500 m.

== Distribution ==
* '''Mexico''': Coahuila, Chihuahua, Durango, Zacatecas.
* '''USA''': Limited populations in Texas and New Mexico (near the border).

== Species ==
Following the restricted circumscription of Lodé (2015), the genus is reduced to only 3 recognized species:

* [[Grusonia bradtiana]] (Type species)
* [[Grusonia pulchella]] (Note: Often moved to Micropuntia by others, but Lodé keeps it here tentatively)
* [[Grusonia rochensis]]

== Taxonomy ==
The circumscription of ''Grusonia'' has been subject to significant debate. While the "New Cactus Lexicon" merged ''Corynopuntia'' and ''Marenopuntia'' into ''Grusonia'', Lodé maintains their separation based on distinct morphological differences in stem structure (ribbed vs. tuberculate) and seed characters. Molecular studies (Wallace & Dickie, 2002) support the distinctiveness of these lineages within the tribe '''Cylindropuntieae'''.

[[Category:Cactaceae]]
[[Category:Opuntioideae]]
[[Category:Cylindropuntieae]]

Grusonia - Revision history