Phymatolithon repandum and Mesophyllum printzianum have uniporate gametangial conceptacles
and multiporate tetrasporangial conceptacles
, making these life cycle stages easy to distinguish.
(2) Reproductive potential of Pneophyllum sp.: Analyzed by counting the number of individuals with and without reproductive structures (conceptacles
), and the number of conceptacles
per reproductive individual.
with one pore, urn-shaped, 400 [micro]m long and 310 [micro]m in diam., located in terminal branches.
"It has very large conceptacles
, the reproductive structures," explained Riosmena-Rodriguez.
Fucoid algae release male and female gametangia (antheridia and oogonia) through multicellular pores to the surface of the alga from spherical, subepidermal conceptacles
present throughout the reproductive tissue (receptacles, Fritsch 1945).
The intercalary meristem, photosynthetic cells, and reproductive conceptacles