empty, hyaline, non-fibrillose cells of a sphagnum stem leaf

moss peat sphagnum leaf stem abstract micrograph bryophyte thick walled cells refractory hyaline undivided wall thickenings rings spiral glowing brown color gametophyte haploid monoploid spore bearing plant centrale land early magnified crossed polarizers polarization light primary producer trophic pyramid environment biology botany science nature natural people