Published in Biol Bull, in 1948, in volume 94, pages 275-282

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

Published in Botanical magazine, in 1914, in volume 28, pages 153-160

Created: 2015-11-12, modified: 2015-11-12

Published in Adansonia, in 1967, in volume 7, issue 4, pages 513-523

Created: 2020-05-10, modified: 2020-05-10

Published in Rhodora, in 1944, in volume 46, issue 542, pages 31

Created: 2016-07-19, modified: 2016-07-19