Parajubaea is a small genus of three species of palms in the family Arecaceae, order Arecales, native to the high-altitude Andes of northwestern South America. Often called "mountain coconuts," these palms bear a striking resemblance to the tropical coconut palm (Cocos nucifera) in their feather-like pinnate leaves, trunk form, and even their coconut-scented, milk-bearing fruits — a remarkable case of convergence in a genus adapted to cool montane conditions rather than tropical lowlands.
The genus is placed in the tribe Cocoseae alongside the coconut and the closely related Chilean wine palm (Jubaea), after which Parajubaea is named ("para-" meaning beside or near, in reference to this kinship). Plants typically reach 10–16 metres in height with trunk diameters of 25–50 cm. Leaves are long and pinnate, measuring 3–5 metres, dark green above and grayish green beneath, with 60–70 pairs of leaflets (pinnae).
Parajubaea cocoides, the Quito palm or mountain coconut, is found in Andean valleys of Colombia and Ecuador at elevations of 2,000–3,000 metres and is widely cultivated as a stately ornamental in cities and parks at similar altitudes. Its seeds are edible with a coconut-like flavour. Parajubaea torallyi, the Bolivian mountain coconut or palma de Pasobaya, is endemic to Bolivia at 2,400–3,400 metres, where it grows on dry, steep rocky slopes in forest habitats with very limited annual rainfall (500–600 mm) and sharp temperature swings. It is notable for its exceptional cold tolerance — surviving temperatures as low as −9°C or lower — making it one of the most cold-hardy feather palms in cultivation. Parajubaea sunkha is the third, lesser-known species in the genus.
Due to habitat loss, P. torallyi is listed as endangered. Outside their Andean homelands, species in this genus have been successfully grown in Mediterranean climates, coastal California, Portugal, Spain, and similar temperate regions, where their cold and drought tolerance, combined with their tropical appearance, make them prized specimens.
Etymology
The name Parajubaea combines the Greek prefix para- (meaning "beside" or "near") with Jubaea, the genus of the Chilean wine palm, which was itself named after the ancient Numidian and Mauritanian king Juba II. The name reflects the close relationship between the two genera within the palm tribe Cocoseae.
Distribution
The three species of Parajubaea are native to the northern and central Andes of South America. P. cocoides occurs in the Andean valleys of Colombia and Ecuador at elevations of 2,000–3,000 m, P. torallyi is endemic to Bolivia at 2,400–3,400 m, and P. sunkha is also Bolivian. In cultivation, species have been established in Mediterranean Europe, coastal California, New Zealand, and other regions with mild or seasonally dry climates.
Ecology
Species grow in high-altitude Andean environments characterised by dry conditions, rocky or sandy soils, intense sun, and pronounced day-night temperature fluctuations. P. torallyi tolerates winter night frosts of −3°C to −9°C with annual rainfall as low as 500–600 mm, surviving in valleys where deep root access to subsurface water compensates for low precipitation. These microclimatic valley habitats maintain relatively high humidity despite sparse rain.
Cultivation
In gardens and parks, Parajubaea palms are cultivated for their spectacular coconut palm-like appearance combined with cold and drought tolerance unusual among feather palms. They prefer full sun, neutral to slightly acidic, well-drained or sandy soils, and dislike waterlogged conditions. P. torallyi tolerates temperatures to at least −9°C once established but benefits from dry soil during cold spells. Specimens have been successfully grown outdoors in California, Portugal, Spain, Italy, and southern Switzerland. Outside their native range, P. cocoides is planted in San Francisco, Sydney, New Zealand, and along the Costa del Sol.
Conservation
Parajubaea torallyi is listed as an endangered species, threatened by ongoing habitat loss in its native Bolivian Andean dry forests. With only three species total, the genus has a naturally limited range and restricted natural populations, making conservation of remaining habitat critical.
