The Collaborative International Dictionary
Endothecium
Endothecium \En`do*the"ci*um\, n. [NL. See Endotheca.] (Bot.) The inner lining of an anther cell.
Wiktionary
endothecium
n. (context biology English) The tissue found in the walls of anthers, and in moss capsules
Usage examples of "endothecium".
The spores are derived from the endothecium, but no distinction of a sterile columella and an archesporium is established in this, a variable number of its cells becoming spore-mother-cells while the rest serve to nourish the spores.
In all other Bryales there is a definite columella extending from the base to the apex of the capsule, the archesporium is derived from the outermost layer of cells of the endothecium, and an air space is formed between the spore-sac and the wall.