The Development and Ultrastructure of the Stomata of Funaria Hygrometrica, Hedw

absent apophysis appear areas arrow arrowheads associated bands calyptra capsule cell plate cell walls changes Chapter cisternae close comparable contain contents continuous Cross section cuticular cytoplasm described differentiation distal electron dense electron microscope ends especially expansion extend fibrils fixed formed Funaria stomata functional Galatis and Mitrakos GCPC's globules guard cell guard cell walls Gunning higher inclusions inner lack ledges light lines located material mature micrographs microtubules middle lamella moss movement non-stomatal epidermal cells nucleus observed occur older optics orientation origin outer wall Palevitz Paolillo Paradermal section parent Pickett-Heaps plants plasmalemma plasmodesmata plastids pore cuticle pore formation possible PPB's present radial reach region reported separation septum shape sides similar sporophyte stage strands structure studies subsidiary cell substomatal cavity surface thick thickening throughout tissue tubular ultrastructural usually vacuoles ventral wall vesicles wall layer young