Hanson, DAndrews, ThomasBadger, Murray2015-12-132015-12-131445-4408http://hdl.handle.net/1885/90738Hornworts (Anthocerotophyta) are the only group of land plants with pyrenoid-containing chloroplasts. CO2 exchange and carbon isotope discrimination values (Δ13C) values have previously demonstrated the presence of a CO2 concentrating mechanism (CCM) inKeywords: Biodiversity; Carbon; Carboxylation; Chlorophyll; Fluorometers; Isotopes; Mass spectrometry; Photosynthesis; Proteins; Land plants; Plants (botany); bryophyte; carbon dioxide; carbon fixation; photosynthesis; Anthocerotophyta; Marchantia polymorpha; Megac CO2 concentrating mechanism; Hornworts; Marchantia; Megaceros; Notothylas; Phaeoceros; Pyrenoid; Rubisco20022015-12-12