@article {van Ee:2010:0363-6445:151,
title = "Taxonomy and Phylogeny of Croton Section Heptallon (Euphorbiaceae)",
journal = "Systematic Botany",
parent_itemid = "infobike://aspt/sb",
publishercode ="aspt",
year = "2010",
volume = "35",
number = "1",
publication date ="2010-02-23T00:00:00",
pages = "151-167",
itemtype = "ARTICLE",
issn = "0363-6445",
eissn = "1548-2324",
url = "https://www.ingentaconnect.com/content/aspt/sb/2010/00000035/00000001/art00016",
doi = "doi:10.1600/036364410790862461",
keyword = "EUPHORBIACEAE, NORTH AMERICA, MOLECULAR PHYLOGENY, SECTION ANGELANDRA, SECTION HEPTALLON, CROTON",
author = "van Ee, Benjamin W. and Berry, Paul E.",
abstract = "A taxonomic key, synonymy, and a molecular phylogeny of the nine species and three varieties of section (Euphorbiaceae) are presented. Section is synonymized with section , and the species from outside of North America
that had been placed into these two sections are shown to belong in other clades within the genus. As circumscribed here, section is a well-supported clade of annual herbs and subshrubs that ranges from central Mexico to the eastern United States. A new combination, , is made. Lectotypes are designated for var. var. , and . ",
}