Airampoa

Airampoa
File:Airampoa ayrampo.jpg
Kingdom	Plantae
Family	Cactaceae
Subfamily	Opuntioideae
Tribe	Opuntieae
SubTribe
Genus	Airampoa
Species
Notes	Taxonomy follows Joël Lodé (2015) with reference to Guiggi (2007), Griffith & Porter (2009), and Ritz et al. (2012).

Etymology

Derived from the Quechua name ayrampo, referring to the red fruits used as dye and food colouring.

Description

Airampoa is a genus of small, compact opuntioid cacti forming low cushions.

• Habit: Low-growing; strongly articulated; forming dense cushions.
• Stems: Composed of small segments; compact and clustered.
• Leaves: Small, cylindrical, deciduous.
• Areoles: Bearing glochids.
• Spines: Fine, acicular; variable in size and colour.
• Flowers: Diurnal; self-sterile.
• Flower shape: Bell-shaped.
• Flower color: Yellow, orange, red, carmine to purplish; rarely white.
• Stigma: Emerald green.
• Pollination: By bees and wasps.
• Fruits: Fleshy; yellow to red; laterally dehiscent; with red pulp.
• Seeds: Small; flattened; kidney-shaped; wrinkled; often stained by fruit pigments.
• Seed dispersal: By birds (notably rheas).

Habitat

Occurs in high-altitude Andean environments:

• puna and altiplano regions
• gravelly or sandy soils
• open ground or under sparse shrubs

Altitude range: approximately 1800–4000 m.

Distribution

South America:

• Argentina
• Bolivia
• Northern Chile
• Southern Peru

Taxonomy

A problematic and variable genus.

Key points:

• Previously included in Tunilla (Hunt & Iliff, 2000)
• Re-established as Airampoa (Guiggi, 2007) following nomenclatural revision
• Distinguished by pollen morphology (perforated tectum vs reticulate in Opuntia)
• Molecular studies place it within Opuntieae but outside Opuntia sensu stricto
• High morphological variability possibly due to hybridization

The genus is accepted as distinct in Lodé (2015), though species delimitation remains uncertain.

Species

According to Joël Lodé (2015):

• Airampoa albisaetacens
• Airampoa armata
• Airampoa ayrampo
• Airampoa chilensis
• Airampoa corrugata
• Airampoa erectoclada
• Airampoa microdisca
• Airampoa minuscula
• Airampoa orurensis
• Airampoa picardoi
• Airampoa tilcarensis

Notes

• Previously confused with Tunilla.
• Likely contains fewer true species than currently listed.
• Exhibits extreme morphological variability across populations.
• Fruits traditionally used as natural dyes.
• Represents a distinct Andean lineage within Opuntieae.