Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 14, pages 181-214

Created: 2016-02-07, modified: 2016-07-26

Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 14, pages 215-239

Created: 2016-02-07, modified: 2016-07-26

Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 14, pages 240-261

Created: 2016-02-07, modified: 2016-07-26

Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 14, pages 263-291

Created: 2016-02-07, modified: 2016-07-26

Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 15, pages 79-109

Created: 2016-02-07, modified: 2016-07-26

Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 15, issue 4, pages 29-78

Created: 2016-02-07, modified: 2016-07-26