The Structure and Reproduction of Sarcodia montagneana (Rhodophyta)

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Abstract
The cellular ontogeny of Sarcodia montagneana (Hook. f. et Harv.) J. Ag. follows a simple pattern of repeated periclinal and anticlinal divisions with an increase in size of the innermost products of the periclinal divisions. The shape of the thallus is largely determined by the restriction of these divisions to a terminal zone and by the limits of cell enlargement. A medulla of stellate cells is formed by separation of the interior cells when the surface area increases proportionately more than the volume of the interior cells. Medullary filaments are formed by the division of the stellate cells. The auxiliary cell is a morphologically undifferentiated cell of the cortex. The carpogonial branch system consists of a supporting cell, one or two carpogonial branches of three cells each, and two or three subsidiary branches. The cystocarp consists of a gonimoblast complex enclosed by a thick spherical pericarp. The gonimoblast cells proximal to the auxiliary cell fuse to form a reticulum of uncertai...

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