%0 Journal Article %T Insights on the systematics and morphology of Humiriaceae (Malpighiales): androecial and extrafloral nectary variation, two new combinations, and a new Sacoglottis from Guyana %A Charles E. Zartman %A Kenneth J. Wurdack %J Archive of "PhytoKeys". %D 2019 %R 10.3897/phytokeys.124.34679 %K anthers %K Duckesia %K extrafloral nectaries %K floral morphology %K glands %K Humiriastrum %K Vantanea Plantae %K Malpighiales %K Humiriaceae Plantae %K Malpighiales %K Humiriaceae Plantae %K Malpighiales %K Humiriaceae %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6598937/