the part of the sporangium of ferns that ruptures to release the spores
Word origin
C20: via New Latin from Greek stomion, diminutive of stoma mouth
Examples of 'stomium' in a sentence
stomium
Only the epidermal cell rows, at the two sides of the stomial dehiscing place, are involved in the stomium rupturing.
Nelson S Bittencourt Jr, Jorge Ernesto de A Mariath 1997, 'Ontogenia dos estratos parietais da antera de Tabebuia pulcherrima Sandw. (Bignoniaceae)Ontogeny of the anther parietal layers of Tabebuia pulcherrima Sandw. (Bignoniaceae)',Acta Botânica Brasílicahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061997000100002. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)