Reports and Papers on Botany: Consisting of I. Mohl on the structure of the palmstem. II. Nägeli on vegetable cells. III. Nägeli on the utricular structures in the contents of cells. IV. Link's report on physiological botany for 1844-45. V. Grisebach's report on geographical botany for 1844. VI. Grisebach's report on geographical and systematic botany for 1845