Listar Biología por autor "db0c412c-6042-4774-ba93-d0449a38c07a"

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    • Capillitial extrusion from fruits of Maxillaria nardoides (Orchidaceae: Maxillariinae) 

      Blanco Coto, Mario Alberto; Whitten, W. Mark; Williams, Norris H.; Koehler, Samantha (2006-09)
      The fruits of Maxillaria nardoides are fusiform, 1–1.2 × 0.3 cm. Upon dehiscence, six valves separate completely at the apex, and a long cylindric mass (up to 6.5 cm long × 3 mm in diameter) of white hygroscopic trichomes ...

    • Convergent evolution of floral signals underlies the success of Neotropical orchids 

      Papadopulus, Alexander; Powell, Martyn P.; Pupulin, Franco; Warner Pineda, Jorge; Hawkins, Julie A.; Salamin, Nicolas; Chittka, Lars; Williams, Norris H.; Whitten, W. Mark; Loader, Deniz; Valente, Luis M.; Chase, Mark W; Savolainen, Vincent (2013-08)
      The great majority of plant species in the tropics require animals to achieve pollination, but the exact role of floral signals in attraction of animal pollinators is often debated. Many plants provide a floral reward to ...

    • Generic realignments in Maxillariinae (Orchidaceae): Corrigenda et adenda 

      Blanco Coto, Mario Alberto; Carnevali Fernández-Concha, Germán; Whitten, W. Mark; Singer, Rodrigo B.; Koehler, Samantha; Williams, Norris H.; Ojeda, Isidro; Neubig, Kurt M.; Endara, Carmen Lorena (2008-04)

    • Generic recircumscriptions of Oncidiinae (Orchidaceae: Cymbidieae) based on maximum likelihood analysis of combined DNA datasets 

      Neubig, Kurt M.; Whitten, W. Mark; Williams, Norris H.; Blanco Coto, Mario Alberto; Endara, Carmen Lorena; Burleigh, Gordon; Silvera, Katia; Cushman, John C.; Chase, Mark W. (2012)
      Phylogenetic relationships within the orchid subtribe Oncidiinae sensu Chase were inferred using maximum likelihood analyses of single and multilocus DNA sequence data sets. Analyses included both nuclear ribosomal internal ...

    • Molecular phylogenetics of Maxillaria and related genera (Orchidaceae: Cymbidieae) based on combined molecular data sets 

      Whitten, W. Mark; Blanco Coto, Mario Alberto; Williams, Norris H.; Koehler, Samantha; Carnevali Fernández-Concha, Germán; Singer, Rodrigo B.; Endara, Carmen Lorena; Neubig, Kurt M. (2007-11)
      The orchid genus Maxillaria is one of the largest and most common of neotropical orchid genera, but its current generic boundaries and relationships have long been regarded as artificial. Phylogenetic relationships within ...

    • Phylogenetic utility of ycf1 in orchids: a plastid gene more variable than matK 

      Neubig, Kurt M.; Whitten, W. Mark; Carlsward, Barbara; Blanco Coto, Mario Alberto; Endara, Carmen Lorena; Williams, Norris H.; Moore, Michael (2008-11-12)
      Plastid DNA sequences have been widely used by systematists for reconstructing plant phylogenies. The utility of any DNA region for phylogenetic analysis is determined by ease of amplification and sequencing, confidence ...

    • Preliminary molecular phylogenetics of Sobralia and relatives (Orchidaceae: Sobralieae) 

      Neubig, Kurt M.; Whitten, W. Mark; Blanco Coto, Mario Alberto; Endara, Carmen Lorena; Williams, Norris H.; Koehler, Samantha (2011-12)
      With over 200 species, the orchid tribe Sobralieae is a major constituent of the Neotropical flora. As currently circumscribed, the tribe includes four genera: Elleanthus, Epilyna, Sertifera, and Sobralia. Most species ...

    • Recircumscription of Pityphyllum (Orchidaceae: Maxillariinae) 

      Whitten, W. Mark; Blanco Coto, Mario Alberto; Williams, Norris H. (2006-03)
      Based upon morphological and molecular evidence, Maxillaria huancabambae (Kraenzl.) C. Schweinf. and M. saragurensis Dodson are transferred to Pityphyllum Schltr. These and other species of Pityphyllum are illustrated with ...