Abstract
Summary Examination of the ring-like annuli, situated within the surface walls of the epidermis of Halophila ovalis , revealed that both the annulus, and a site beneath it on the inside of the exterior epidermal wall reacted strongly to silver nitrate. It is suggested that the annulus and associated vacuole may be important localised sites affecting the influx and efflux of ions, particularly chlorides. The localisation of chlorides, and the annuli are present in H. ovalis (R. Br.) Hook. f., H. decipiens Ostenfeld, H. ovata Gaud.; they are absent in H. spinulosa (R. Br.) A schers ., and in the genera Cymodocea, Thalassia, Halodule, Zostera, Syringodium and Enhalus in which no localised concentration of chloride is found. The laminate epidermis wall, and the presence of paramural bodies, and the wall protuberances nto the lumen, characterise the wall as collenchymatous, and the cells as transfer cells.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
