INVESTIGADORES
FERRUCCI Maria silvia
artículos
Título:
PATRONES DE VENACIÓN FLORAL EN TRES ESPECIES DE PAULLINIEAE (SAPINDACEAE)
Autor/es:
SOLÍS S.M. ; FERRUCCI M.S.
Revista:
BOLETíN DE LA SOCIEDAD ARGENTINA DE BOTáNICA
Editorial:
Gutierrez Gráfica
Referencias:
Lugar: Córdoba; Año: 2009 vol. 44 p. 317 - 327
ISSN:
0373-580X
Resumen:
Floral venation patterns inthree species of Sapindaceae-Paullinieae. The floral venation patterns of Cardiospermumgrandiflorum, Urvillea chacoensis and Thinouia mucronata, aresurveyed. These species are monoecious and the inflorescence is a thyrsecarrying staminate and bisexual flowers funcionally pistillate. Cardiospermumgrandiflorum and U. chacoensis belong to the subtribePaulliniinae which is characterized by obliquely zygomorphic flowers, whereas T.mucronata belongs to the monotypic Thinouiinae which presents actinomorphicflowers. Vascular pattern is similar in both types of flowers of the studiedspecies; from one ectofloic siphonostele depart vascular traces that supply theperianth whorls displaying phenomena of progressive fusion and adnation.Vascular tissue supplying the nectaries is characterized by strands of phloem.Regarding the floral vasculature in these species, differences in thevasculature lay primarily in the number of the sepal-petal complexes tracesdeparting from the central ectophloic siphonostele; whereas the venationpattern of the fertile verticils is common to them. The data obtained supportthe basal position of Thinouia in the tribe Paullinieae.