A new species of Rogiera (Rubiaceae) of the arid zone of Metztitlan, Hidalgo, Mexico
Por:
Torres-Montufar, Alejandro, Solano, Eloy, Morales-Garduno, Luis, Ochoterena, Helga
Publicada:
1 ene 2019
Resumen:
Background and Aims: The number of species in the genus Rogiera is
debatable, varying from 11 to 20 depending on the author. Mexico is
undoubtedly the center of diversity for the genus, having up to 14
recognized species, the majority growing in cloud forest and tropical
rain forest habitats.
Methods: Botanical material collected as part of a floristic and
phytogeographic study from the northwest portion of the Metztitlan
municipality, Hidalgo, was compared to specimens of Rogiera deposited in
the collections ENCB, F, FCME, MEXU and MO. After reviewing all the type
material and protologues of all the Rogiera species, we determined that
the material represents a new, undescribed species.
Key results: Rogiera metztitlensis is described and illustrated as a new
species from the arid region of Metztitlan, Hidalgo, Mexico. This new
species is morphologically similar to Rogiera amoena, R. cordata and R.
ehrenbergii due to the mature stipule orientation (except en R.
ehrenbergii) and flower size and color. It differs in being a shrub up
to 1 m tall, its smaller stipules 3-4 mm long, the corolla throat with a
densely white hairy ring and the wingless seeds.
Conclusions: Rogiera metztitlensis is endemic to Hidalgo, where it
occurs in arid matorral habitats, in contrast to the humid habitats of
other Rogiera species.
Filiaciones:
Torres-Montufar, Alejandro:
Univ Nacl Autonoma Mexico, Dept Bot, Inst Biol, Tercer Circuito S-N,Ciudad Univ, Cd Mx 04510, Mexico
Solano, Eloy:
Univ Nacl Autonoma Mexico, Fac Estudios Super Zaragoza, Unidad Invest Sistemat Vegetal & Suelo, Batalla 5 Mayo S-N, Cd Mx 09230, Mexico
Morales-Garduno, Luis:
Univ Nacl Autonoma Mexico, Fac Estudios Super Zaragoza, Unidad Invest Sistemat Vegetal & Suelo, Batalla 5 Mayo S-N, Cd Mx 09230, Mexico
Ochoterena, Helga:
Univ Nacl Autonoma Mexico, Dept Bot, Inst Biol, Tercer Circuito S-N,Ciudad Univ, Cd Mx 04510, Mexico
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