Aa achalensis
Aa achalensis is a species of orchid in the genus Aa. They are found at high altitude in Argentina's Sierras de Córdoba.
Distribution and habitat
Endemic to parts of the Sierras de Córdoba in northern Argentina, Aa achalensis are most common between above sea level, though they are found as high. The orchids grow in mountain forests and grasslands. Like many orchids, they associate with fungal orchid mycorrhiza, but also with dark septate endophytes.Description
Aa achalensis grows between tall.Aa achalensis can be differentiated by its hairless rachises, scapes, and ovaries, a trait no other Argentinian Aa species possesses. They have small white raceme flowers. They flower in the summer, between September and December, and fruit until April.