Chromosome Numbers of Asteranthos and the Putatively Related Lecythidaceae

An updated review of chromosome numbers in the Lecythidaceae is presented, which includes new counts for Gustavia angustifolia and Lecythis lanceolata (both with n = 17) and gives identifications to species for five previously published counts based on unidentified material. The earlier conclusion t...

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Bibliographic Details
Published in:Brittonia 1989-04, Vol.41 (2), p.131-135
Main Author: Kowal, Robert R.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chromosomes
Flowering plants
Fundamental and applied biological sciences. Psychology
Metaphase
Plant cytology, morphology, systematics, chorology and evolution
Ploidies
Spermatophyta
Systematics (diagnosis, chromosome numbers)
Taxa
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Summary:An updated review of chromosome numbers in the Lecythidaceae is presented, which includes new counts for Gustavia angustifolia and Lecythis lanceolata (both with n = 17) and gives identifications to species for five previously published counts based on unidentified material. The earlier conclusion that the largely Asian Planchonioideae have x = 13, the African Napoleonaeoideae have x = 16, and the New World Lecythidoideae have x = 17 still holds. The new count of n = 21 for Asteranthos brasiliensis does not support the previous treatment of Asteranthos, a monotypic genus of the upper Amazon drainage, as the only New World representative of the otherwise tropical west African Napoleonaeoideae. Mounting evidence favors recognition of a monotypic family, the Asteranthaceae, of yet unclear relationships.
ISSN:0007-196X
1938-436X
DOI:10.2307/2807517