Published in 10 parts, 1823-50; p. 1-444 of vol. 2 published 1823-26, p. i-clxiv of vol. 1 published 1831-49. Vol. 1 has added title page: De palmis generatim. Scripserunt de palmarum structura Hugo a Mohl. Des palmis fossilibus Franc. Unger. De palmarum formatione et rationibus geographicus Carol. Frid. Phil. Martius. Text in Latin.