The Ultrastructure of the Placenta in Sphagnum
Document Type
Article
Publication Date
1-1-1989
Description
The placenta of two Sphagnum species was examined by electron microscopy. In contrast to all mosses so far investigated, neither sporophyte nor gametophyte placental cells of Sphagnum develop wall ingrowths. The sporophyte cells are highly vacuolate and the gametophyte cells close to them degenerate to produce a system of spaces filled with mucilage. Whether this type of placenta represents a primitive or derived condition in mosses is discussed.
Citation Information
LIGRONE, R.; and RENZAGLIA, K. S.. 1989. The Ultrastructure of the Placenta in Sphagnum. New Phytologist. Vol.111(2). 197-201. https://doi.org/10.1111/j.1469-8137.1989.tb00682.x ISSN: 0028-646X