Greenwoodiella, a New Genus of Spiranthinae (Orchidaceae) from North and Central America and the Greater Antilles, with a New Species from the Chihuahuan Desert
Por:
Salazar, Gerardo A., Hernandez-Lopez, Tania J., Sharma, Jyotsna, Jimenez-Machorro, Rolando, Cabrera, Lidia I., Trevino-Carreon, Jacinto
Publicada:
1 oct 2016
Resumen:
A new orchid species from the Chihuahuan Desert region in Tamaulipas,
Mexico and Texas, U.S.A., is described and illustrated. The phylogenetic
position of the new species was assessed by parsimony and maximum
likelihood analyses of nuclear (ITS) and plastid (matK-trnK, trnL-trnF)
DNA sequences of 61 species/35 genera of Spiranthinae and 15 additional
species and genera of Cranichideae. The results indicate a close
relationship of the new species to several species previously included
in Schiedeella, especially S. wercklei, but our analyses also show that
such a group does not belong to the clade that includes the type species
of Schiedeella (S. transversalis), being instead sister to Mesadenus. A
new genus, Greenwoodiella, is proposed to include the new species (G.
deserticola) and its closest relatives (G. micrantha var. micrantha, G.
micrantha var. garayana, and G. wercklei). The identity of Lexarza's
Neottia micrantha is clarified, the other species belonging in this
clade are discussed, and the required transfers made. An identification
key to the three species and two varieties we recognize in the new genus
is provided.
Filiaciones:
Salazar, Gerardo A.:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Apartado Postal 70-367, Mexico City 04510, DF, Mexico
Hernandez-Lopez, Tania J.:
Univ Autonoma Tamaulipas, Fac Ingn & Ciencias, Ctr Univ Adolfo Lopez Mateos, Ciudad Victoria 87149, Tamaulipas, Mexico
Sharma, Jyotsna:
Texas Tech Univ, Dept Plant & Soil Sci, Lubbock, TX 79409 USA
Jimenez-Machorro, Rolando:
Herbario AMO, Montanas Calizas 490, Mexico City 11000, DF, Mexico
Cabrera, Lidia I.:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Apartado Postal 70-367, Mexico City 04510, DF, Mexico
Trevino-Carreon, Jacinto:
Univ Autonoma Tamaulipas, Fac Ingn & Ciencias, Ctr Univ Adolfo Lopez Mateos, Ciudad Victoria 87149, Tamaulipas, Mexico
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