<i>PTEROSIPHONIA PENNATA VERSUS P. PINNULATA IN THE NORTHWESTERN OF IBERIAN PENINSULA</i>

Authors

  • Pilar Díaz Tapia
  • Ignacio Bárbara
Keywords: seaweeds, Rhodomelaceae, Rhodophyta, <i>Pterosiphonia pennata, Pterosiphonia pinnulata</i>, Iberian Peninsula, Galicia

Abstract

In the floristic studies that we are carrying out in roky-sandy marine environments, we have detected populations with individuals having intermediate characters between Pterosiphonia pennata and P. pinnulata. As the second species have not previously recorded in Galicia, we have carried out a comparative study between P. pennata and P. pinnulata. In order to value what species are present in Galicia, distinctive diagnostic characters for both species were considered. Individuals collected in populations of nine Galician localities and herbarium specimens from Atlantic and Cantabrian coasts of the Iberian Peninsula were studied. Regarding, the number of periaxial cells, the axe diameter, as well as the diameter/length ratio of segments in postrate axes and erect axes, the Galician material shows intermedial between P. pennata and P. pinnulata; whereas the erect axe segment in wich the first branch is originated, the coalesced between erect axe and branch as well as the development of tetrasporangia in spread lateral branches show resemblance to P. pinnulata. Adding that in literature a large variability and taxonomic confusion for the diagnostic character values of both species were detected, we suggest the necessity of carrying out a widely study to check the existence of a single species, which will cover the variability detected for P. pennata and P. pinnulata in the present study. In the meantime, we identify the Galician material as sensu lato.

Downloads

Download data is not yet available.

Author Biographies

Pilar Díaz Tapia

Universidad de La Coruña

Ignacio Bárbara

Universidad de La Coruña
How to Cite
Díaz Tapia, P., & Bárbara, I. (2004). <i>PTEROSIPHONIA PENNATA VERSUS P. PINNULATA IN THE NORTHWESTERN OF IBERIAN PENINSULA</i>. Anales de Biología, (26), 191–211. Retrieved from https://revistas.um.es/analesbio/article/view/30451
Issue
Section
Articles