An outstanding new species of Senna (Fabaceae: Caesalpinioideae) from southern Puebla, Mexico
Por:
Rojas-Martinez, Cecilia, Hilda Flores-Olvera, Maria, Ochoterena, Helga, Delgado-Salinas, Alfonso
Publicada:
4 jun 2019
Resumen:
Senna acatlanensis is described and illustrated here. This species is
restricted to a forest ecotone in southern Puebla (Mexico), and stands
out by its unique large asymmetric flowers, with yellow petals that do
not fade away to reddish-brown as they dry-out, heteromorphic and
variable androecium; with four staminodes, ten or less fertile stamens;
by its pendulous, cylindrical fruits, with chartaceous strigillose
valves, and inter-seminal septa with a black-pulpy endocarp that
surrounds exareolate seeds. These morphological attributes in addition
to leaves with two pairs of leaflets, anthers with beaks, gynoecium
multi-ovulated, and transversely oriented seed, turned broadside to the
septa placed this new species within the series Bacillares.
Illustrations, taxonomic comments, distribution and conservation status
are provided with a key to the Mexican species of series Bacillares.
Filiaciones:
Rojas-Martinez, Cecilia:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Botan, Cd Univ, Ciudad De Mexico 04510, Mexico
Universidad Nacional Autónoma de México, Instituto de Biología, Departamento de Botánica, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico
Hilda Flores-Olvera, Maria:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Botan, Cd Univ, Ciudad De Mexico 04510, Mexico
Ochoterena, Helga:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Botan, Cd Univ, Ciudad De Mexico 04510, Mexico
Universidad Nacional Autónoma de México, Instituto de Biología, Departamento de Botánica, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico
Delgado-Salinas, Alfonso:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Botan, Cd Univ, Ciudad De Mexico 04510, Mexico
Universidad Nacional Autónoma de México, Instituto de Biología, Departamento de Botánica, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico
|