Bruederle, Leo , Derieg, Nathan , Reznicek, Anton .
Carex viridistellata sp. nov. (Cyperaceae), a new cryptic species from prairie fens of the eastern United States.
Divergence between evolutionary lineages is not always marked by the development of obvious species-specific characters,whether morphological, physiological, or ecological. Consequentially, extant biodiversity can easily be overlooked. These cryptic species are often not recognized until genetic dataare in hand, as is the case for the novel taxon we describe here. Carex viridistellata in Carex section Ceratocystis is an endemic restricted to calcareous wetlands of Michigan,Ohio, and Indiana, where it has previously been collected as Carex cryptolepis. Crosses between Carex viridistellata and Carex cryptolepis produce sterile F1 hybrids, and the two species are differentiated by a number of subtle morphological characters, as well as aspects of their respective ecologies.Phylogenetic analyses of nrDNA strongly indicate a sister species relationship between Carex viridistellata and the North Carolina narrow endemic Carex lutea,which together constitute a distinct lineage within a generally poorly resolved section Ceratocystis. This work highlights the broad importance of cryptic taxa, with implications for fields ranging from population genetics to conservation and restoration.
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1 - University Of Colorado Denver, CB171, P.O. 173364, DENVER, CO, 80217-3364, USA
2 - University Of California, Santa Barbara, Santa Barbara, CA, 93106, USA
3 - University Of Michigan, UNIVERSITY HERBARIUM, 3600 VARSITY DRIVE, Ann Arbor, MI, 48108, USA
Presentation Type: Oral Paper:Papers for Sections
Location: Franklin B/Hyatt
Date: Monday, July 9th, 2012
Time: 3:30 PM