Two new Brazilian species and new combinations in Euploca (Heliotropiaceae)

Plant Identification Terminology: An Illustrated Glossary

Rudolf Schmid, James G. Harris, Melinda Woolf Harris · Taxon · 2002 · 680 citations

Biology, Biodiversity, Plant Identification +15

Plant Identification Terminology: An Illustrated Glossary

Rudolf Schmid, James G. Harris, Melinda Woolf Harris · Taxon · 1995 · 161 citations

Biology, Phylogenetics, Botany +5

Collections towards a Flora of the Territory of Arkansas

Thomas Nuttall · Transactions of the American Philosophical Society · 1837 · 48 citations

Biodiversity, Geography, Natural Resource Management +2

Studies in the Boraginaceae, VII. The South American species of Heliotropium.

Ivan M Johnston · 1928 · 40 citations

Biology, Botany, Natural Sciences +4