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Systematics Section / ASPT

Fulop, Daniel [1], Kramer, Elena M [1].

Phylogenetics and development of Catasetum L.C. Rich. (Orchidaceae).

Flowers of the Neotropical orchid genus Catasetum exhibit an extreme sexual dimorphism, with pistillate and staminate flowers that are strikingly different in morphology and coloration. Staminate flowers of different species are also quite dissimilar. In contrast, pistillate flowers of different species are quite similar. Catasetum plants are monoecious, yet are thought of as functionally dioecious because a given individual will typically o­nly produce either pistillate or staminate inflorescences in o­ne flowering season (i.e., gender diphasy). Here, we present progress towards a molecular species level phylogeny of Catasetum, as well as developmental series of female and male Catasetum flowers.


1 - Harvard Univerisity, Organismic and Evolutionary Biology, 16 Divinity Ave, Biolabs 1109, Cambridge, Massachusetts, 02138, USA

Keywords:
Orchidaceae
phylogenetics
flower development
sexual dimorphism.

Presentation Type: Poster
Session: 32-80
Location: Special Event Center (Cliff Lodge)
Date: Tuesday, August 3rd, 2004
Time: 12:30 PM
Abstract ID:157


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