PLANTAE AUSTRO-AMERICANAE VII: DE FESTO SECULARI RICARDI SPRUCEI AMERICA AUSTRALI ADVENTU COMMEMORATIO ATQUE DE PLANTIS PRINCIPALITER VALLIS AMAZONICIS DIVERSAE OBSERVATIONES
Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 15, issue 4, pages 29-78
Date published:1951