Consolea
From M&J Cactus Wiki
| Consolea | |
|---|---|
| File:Consolea spinosissima.jpg | |
| Kingdom | Plantae |
| Family | Cactaceae |
| Subfamily | Opuntioideae |
| Tribe | Opuntieae |
| SubTribe | |
| Genus | Consolea |
| Species | |
| Notes | Taxonomy follows Joël Lodé (2015) with molecular insights from Negrón-Ortiz (2007), Griffith & Porter (2009), Nyffeler & Eggli (2010), and Majure et al. (2012). |
Etymology
The genus Consolea honors Michelangelo Console (1812–1897), Italian botanist and curator of the Botanical Garden of Palermo, specialized in cacti.
Description
Consolea is a genus of arborescent cacti with complex branching architecture and variable spination.
- Habit: Tree-like, with one or several cylindrical trunks; branching lateral or terminal.
- Trunks: Strongly spiny, woody with age.
- Cladodes: Suborbicular to elongated or ellipsoid; margins often curved; surface smooth or reticulate.
- Areoles: Bearing hairs, glochids, and spines.
- Spines: Highly variable; sometimes reduced or absent.
- Flowers: Diurnal, relatively small; yellow, orange to red; self-sterile.
- Pollination: Primarily by ants (e.g. Crematogaster ashmeadi), also bees and possibly hummingbirds.
- Fruits: Oblong, fleshy.
- Seeds: Straw-colored, strongly laterally compressed, with funicular envelope densely covered in trichomes.
Habitat
Occurs in tropical coastal and dry forest environments:
- dry forests and scrublands
- coastal zones and rocky outcrops
- near mangroves and seaside habitats
Altitude range: sea level to approximately 50 m.
Distribution
Caribbean and adjacent regions:
- Bahamas
- Cayman Islands
- Cuba
- Haiti
- Jamaica
- Puerto Rico
- Dominican Republic
- United States (Florida)
Taxonomy
The genus shows a complex evolutionary history involving hybridization.
Key points:
- Described by Lemaire (1862)
- Often placed within or near Opuntia sensu stricto
- High levels of polyploidy (Negrón-Ortiz, 2007)
- Evidence of reticulate evolution (Griffith, 2005)
- Nuclear and chloroplast DNA give conflicting phylogenetic signals
- Nyffeler & Eggli (2010): suggested inclusion within Opuntia
- Majure et al. (2012): confirmed Consolea as monophyletic and distinct
The genus is therefore retained as separate following Lodé (2015).
Species
According to Joël Lodé (2015):
** Consolea millspaughii subsp. caymanensis
** Consolea moniliformis subsp. guantanamana
** Consolea nashii subsp. gibarensis
Notes
- A predominantly Caribbean lineage with strong ecological specialization.
- High polyploidy levels likely contributed to diversification.
- Displays reticulate evolution, explaining conflicting molecular results.
- Morphologically distinct from Opuntia and Nopalea, especially in growth architecture.
