Syagrus macrocarpa is a rare species of palm found only as scattered isolated individuals and small groups in the east of the Brazilian states of Espírito Santo, Minas Gerais and Rio de Janeiro. It grows to 4-10m tall, with 8-20 leaves to 2m long. The leaves are bent at the end, with very hairy margins near the trunk, and consist of 180-320 slightly coiled leaflets irregularly arranged in several planes on the rake. The fruit are oval, greenish-yellow, 6–9 cm long.[2] It is grown in cultivation.[4][5][6] Seeds are difficult to germinate, with low rates of germination.[4][5] Common names for it in Minas Gerais are baba-de-boi-grande and maria-rosa.[2]
Unlike most other species of Syagrus, this species started in 1879 as a Syagrus, as João Barbosa Rodrigues classified it along with Karl von Martius' S. cocoides. Three years later Rodrigues synonymised the genus Syagrus with Cocos (it was resurrected in 1916 by Beccari).[3]
It is quite similar to Syagrus romanzoffiana, but differs by being smaller, with smaller leaves and inflorescence, but with much larger fruit and female flowers. Unlike the spiral placement of the racemes (branches) of the inflorescence in S. romanzoffiana, S. macrocarpa has its racemes unilaterally arranged. S. cocoides also is similar, but has smaller fruit and spirally placed racemes in the inflorescence.[2]
Noblick, writing for the IUCN in 1998, mentions his concern that the scattered nature of the population might harm the species in the long term due to inbreeding.[1]
^ abNoblick, L. (1998). "Syagrus macrocarpa". IUCN Red List of Threatened Species. 1998: e.T38700A10143136. doi:10.2305/IUCN.UK.1998.RLTS.T38700A10143136.en. Retrieved 17 November 2021.
^ abcdLeitman, P.; Soares, K.; Henderson, A.; Noblick, L.; Martins, R.C. (2015). "Brazilian Flora Checklist - Syagrus macrocarpa Barb.Rodr". Arecaceae in Lista de Espécies da Flora do Brasil, Flora do Brasil 2020 under construction (in Portuguese). Jardim Botânico do Rio de Janeiro. Retrieved 10 September 2018.
^ abGovaerts, R. (2018). "World Checklist of Selected Plant Families". Royal Botanic Gardens, Kew. Retrieved 12 September 2018.
^ ab"Syagrus macrocarpa - Pacsoa". PACSOA Palms and Cycads wiki. Palm and Cycad Societies of Australia. 11 November 2013. Retrieved 11 September 2018.
^ ab"Syagrus macrocarpa - buy seeds at rarepalmseeds.com". Retrieved 11 September 2018.
^Brown, Ed (6 Mar 2009). "Syagrus macrocarpa - DISCUSSING PALM TREES WORLDWIDE - PalmTalk". Retrieved 11 September 2018.
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