Published in Biol Bull, in 1914, in volume 26, pages 1-24

Created: 2010-01-06, modified: 2011-06-21

Published in Biol Bull, in 1939, in volume 77, pages 166-173

Created: 2010-01-06, modified: 2011-06-21

Published in Biol Bull, in 1919, in volume 36, pages 149-166

Created: 2010-01-06, modified: 2011-06-21

Published in Botanical Gazette, in 1920, in volume 69, issue 1, pages 54-71

Created: 2017-03-14, modified: 2017-03-14

Published in Kungl. Svenska vetenskapsakademiens handlingar, in 1872, in volume 10, issue 4, pages 3-159

Created: 2015-03-12, modified: 2015-03-12