Chromosome Studies on some Orchids from South America


chromosome numbers

How to Cite

Dematteis, M., & Davina, J. (1999). Chromosome Studies on some Orchids from South America. Selbyana, 20(2), 235–238. Retrieved from


Chromosome counts and some karyomorphological observations of 14 different orchid species of nine genera are reported. The results include first counts for Encyclia argentinensis (Speg.) Hoehne (2n = 38), Laelia lundii Rchb. f. & Warm. (2n = 40), Campylocentrum neglectum Cogn. (2n = 38), Huntleya meleagris Lindl. (2n = 46), Oeceoclades maculata (Lindl.) Lindl. (2n = 56), Oncidium longicornu Mutel (2n = 56), and O. bifolium Sims (2n = 108). The chromosome numbers of seven additional species is also confirmed: Eltropectris triloba (Lindl.) Pabst. (2n = 46), Pelexia bonariensis (Lindl.) Schltr. (2n = 46), Catasetum fimbriatum Rchb. f. (2n = 108), Oncidium jonesianum Rchb. f. (2n = 30), O. morenoi Dodson & Luer (2n = 30), O. pumilum Lindl. (2n = 30), and O. longipes Lindl. (2n = 56). The results are discussed in relation to previous chromosome studies for each taxon.


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