IAL 21557
INSTITUTO DE AGROBIOTECNOLOGIA DEL LITORAL
Unidad Ejecutora - UE
artículos
Título:
Structure of the inflorescences of selected South American species
Autor/es:
REUTEMANN ANDREA,; GUARISE NICOLAS; LOPEZ GABRIELA,; VEGETTI, ABELARDO
Revista:
PLANT SYSTEMATICS AND EVOLUTION
Editorial:
SPRINGER WIEN
Referencias:
Año: 2009 vol. 283 p. 93 - 110
ISSN:
0378-2697
Resumen:
Abildgaardieae poses several taxonomic challenges,
because there is no general agreement on its circumscription
and infrageneric divisions. With the objective
of providing data with taxonomic and phylogenetic value,
the structures of the inflorescences of Abildgaardia,Abildgaardia,
Bulbostylis, and Fimbristylis were analyzed following the
methodology and terminology of Trolls school. The
inflorescences studied are polytelic and may comprise only
the main florescence or may also show a paracladial zone
below it. They are unispiculate, anthela-like, or capitate,
and can be terminal, pseudolateral, or in an intermediate
position. Normal and prophyllar branching patterns are
observed. The acropetal reduction in the order and number
of ramifications, and the length of bracts and prophylls
were recorded. Foliose structures with an intermediate
form between a setaceous bract and a glume are frequently
found at the spikelet base. Hypotheses of the homology of
these structures, and a list of inflorescence characteristics
and character states are presented. The branching pattern of
the inflorescence seems to be the main characteristic with
potential taxonomic and phylogenetic implications at genus
level. The rest of the characteristics could possibly be
useful for infrageneric divisions., and Fimbristylis were analyzed following the
methodology and terminology of Trolls school. The
inflorescences studied are polytelic and may comprise only
the main florescence or may also show a paracladial zone
below it. They are unispiculate, anthela-like, or capitate,
and can be terminal, pseudolateral, or in an intermediate
position. Normal and prophyllar branching patterns are
observed. The acropetal reduction in the order and number
of ramifications, and the length of bracts and prophylls
were recorded. Foliose structures with an intermediate
form between a setaceous bract and a glume are frequently
found at the spikelet base. Hypotheses of the homology of
these structures, and a list of inflorescence characteristics
and character states are presented. The branching pattern of
the inflorescence seems to be the main characteristic with
potential taxonomic and phylogenetic implications at genus
level. The rest of the characteristics could possibly be
useful for infrageneric divisions.
