Tipologia de la sinflorescencia y cleistogamia en Clitoria cordobensis (Fabaceae)

DREWES, S. I.; LÓPEZ FERNÁNDEZ M. P

Huerta Grande Cordoba

Congreso; I REUNION CONJUNTA DE SOCIEDADES DE BIOLOGÍA DE LA REPÚBLICA ARGENTINA; 2007

Clitoria cordobensis Burkart is an endemic perennial herbaceous plant of the mountain ranges of Cordoba. The objective of this work was to study the typology of the synflorescence  and floral morphology. Studies at field were made during years 2003 to 2007 in four natural populations that grew in the Punilla Valley, Córdoba. Samples were taken for their later analysis in the laboratory. The plants have aerial orthotropic axes with little buds of innovation and with very few branches with voluble apexes and truncated polytelic  synflorescence.. The paraclade is reduced to its coflorescence, hypotagma is not developed, the axis is very short and presents between 4-6 flowers in axillaries fascicules. Chasmogamic and cleistogamic  flowers were observed, these were reduced to a small calyx, did not possess corolla, the androecium was reduced to only three stamens, the position of the anther of the vexilar stamen coincided, and it leaned in the stigmatic surface, the style was short and curved. The ovarian development was manifested immediately, the style was not extended, stigma was separated of the anther by the growth of the fruit. According to the observed data the increase of cleistogamic  flowers at the end of the flowering guarantees the production of fruits and seeds.