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OBSERVATIONS ON GELIDIUM PUSILLUM (STACKH.) LE JOLIS (RHODOPHYTA) FROM THE COAST OF PAKISTAN

SYED AFAQ-HUSAIN AND MUSTAFA SHAMEEL*

Abstract: The vegetative, anatomical and reproductive structures of the Pakistani populations of Gelidiurn pusillurn (Stackhouse) Le Jolis have been investigated. The plants showed distinctive features with turf or cushion forming habit; upto 11 mm in length and appear distinctly segmented in microscope; primary erect fronds tereto-compressed below becoming flat in the upper half; random arrangement of surface cells as well as tetrasporangia; tetrasporangia borne in stichidia-like structures as well as on the tips of branch fronds; sexual plants not found; and abundance of rhizines.

PCSIR Laboratories Complex, Karachi-75280, Pakistan.

Department of Botany/Institute of Marine Sciences, University of KArachi, KArachi-75270, Pakistan.