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Abstract Detail

Systematics Section

Keene, Jeremy [1], Ballard Jr, Harvey [2].

An examination of the species limits within the Monopyle sodiroana complex (Gesneriaceae).

The Monopyle sodiroana complex in the Gesneriaceae ranges from central Colombia through northern Peru. It is composed of both terrestrial and epiphytic plants. This taxon was originally described as having laciniate calyx margins and a terminal inflorescence. Subsequent treatments, ignoring these particular diagnostic characters, have led to some confusion as to what defines the species and separates it from relatives. Interpretation of inflorescence structure (e.g., terminal versus axillary inflorescence type) from specimens has proven challenging and confusing to lay taxonomists and specialists alike. Moreover, the lack of a designated type and inclusion of a mixed collection by Sodiro have exacerbated the problem of its proper circumscription and fostered an overall misunderstanding of the morphology of this taxon. The goal of this study is to precisely circumscribe M. sodiroana morphologically in a narrow sense, designate an appropriate lectotype for the name M. sodiroana, and then describe the several new species currently passing under that name and related morphologically to it. Thus far, nine morphologically distinctive species have been segregated from this polymorphic complex. These vary by indument, calyx shape, and consistent characters of leaves. The taxa are also geographically separate, narrowly endemic, and only occupy moist montane forest habitats.

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1 - Ohio University, Environmental & Plant Biology, Porter Hall 317, Athens, OH, 45701, USA
2 - Ohio University, Environmental & Plant Biology, 315 Porter Hall, Athens, OH, 45701, USA


Presentation Type: Oral Paper:Papers for Sections
Session: 36
Location: Lindell B/Chase Park Plaza
Date: Tuesday, July 12th, 2011
Time: 1:45 PM
Number: 36002
Abstract ID:519

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