Literature

Authors	Year	Title
I. M. Johnston	1949	Studies in the Boraginaceae XVIII. Boraginaceae of the southern West Indies
I. M. Johnston	1951	Studies in the Boraginaceae XX. Representatives of three subfamilies in eastern Asia
I. M. Johnston	1939	Studies in the Boraginaceae, XIII. New or otherwise noteworthy species, chiefly from western United States
V. Mozaffarian	2006	Studies on the flora of Iran, four new species and a short note on an interesting Rubiaceae
U. S. Qureshi	1985	Studies on the pollen morphology of the genus Heliotropium L. from Pakistan
T. Petanidou	2005	Sugars in Mediterranean floral nectars: An ecological and evolutionary approach
P. van Tieghem	1906	Sur les Heliotropiacées
J. I. M. Melo	2015	Synopsis of Boraginaceae sensu lato in the Caatingas of the São Francisco River, Northeastern Brazil
J. Iranildo M. De Melo, Semir J.	2010	Taxonomia do gênero Euploca Nutt. (Heliotropiaceae) no Brasil
J. Iranildo M. De Melo, Semir J.	2008	Taxonomia do gênero Heliotropium L. (Heliotropiaceae) no Brasil
S. El Naggar, El-Hadidy, A., Olwey, A.	2015	Taxonomic revision of the genus Heliotropium (Boraginaceae s.l.) in south Yemen
M. Gottschling, Diane, N., Hilger, H. H., Weigend, M.	2004	Testing hypotheses on disjunctions present in the Primarily Woody Boraginales: Ehretiaceae, Cordiaceae, and Heliotropiaceae, inferred from ITS1 sequence data
I. M. Johnston	1929	The coastal flora of the departments of Chañaral and Taltal
H. H. Hilger, Gottschling, M., Selvi, F., Bigazzi, M., Långström, E., Zippel, E., Diane, N., Weigend, M.	2005	The Euro+Med treatment of Boraginaceae in Willdenowia 34 – a response
I. M. Johnston	1929	The flora of the Nitrate Coast
I. Murray Johnston	1931	The flora of the Revillagigedo Islands
P. J. Vogan, Frohlich, M. W., Sage, R. F.	2007	The functional significance of C3–C4 intermediate traits in Heliotropium L. (Boraginaceae): gas exchange perspectives
I. A. Al-Shehbaz	1991	The genera of Boraginaceae in the southeastern United States
H. Akhani, Förther H.	1994	The genus Heliotropium L. (Boraginaceae) in Flora Iranica area
M. Thulin	2003	Three new species of Heliotropium (Boraginaceae) from the Horn of Africa region
F. Luebert, Weigend M.	2012	Three new species of Heliotropium sect. Heliothamnus (Heliotropiaceae) from Peru
A. Richardson, King W. K.	2009	Tournefortia hirsutissima (Boraginaceae) new to the flora of Texas
J. S. Miller	2001	Tournefortia kirkii (I.M. Johnston)J.S. Mill. (Boraginaceae): A new combination for a species from Madagascar
L. Cavalheiro, Ranga, N. Taroda, Furlan, A.	2011	Tournefortia L. (Boraginaceae): espécies do Brasil extra-amazônico
N. Diane, Hilger, H. H., Gottschling, M.	2002	Transfer cells in the seeds of Boraginales
M. Ortiz, Degen, R., Benítez, M. C.	1993	Tricomas glandulares en hoja de Heliotropium procumbens Miller
J. Iranildo M. De Melo, Semir J.	2009	Two new Brazilian species and new combinations in Euploca (Heliotropiaceae)
C. Feuillet	2016	Two new combinations in Euploca Nutt. (Heliotropiaceae, Boraginales) and a conspectus of the species of the Guiana Shield area
T. A. Al‐Turki, Omer, S., Ghafoor, A.	2001	Two new species of Heliotropium L. (Boraginaceae) from Saudi Arabia
B. Verdcourt	1989	Two synonymies in Boraginaceae
F. Luebert, Hilger H. H.	2014	Typification of Heliotropium and Tournefortia (Heliotropiaceae) species described by Ruiz and Pavón
S. Cafferty, Jarvis C. E.	2004	Typification of Linnaean plant names in Boraginaceae
J. Iranildo M. De Melo	2007	Uma nova espécie de Tournefortia L. (Boraginaceae s.l.) para o Nordeste do Brasil
L. Ariza-Espinar	2003	Una especie de Tournefortia (Boraginaceae) nueva para la flora argentina
A. E. Ragonese	1950	Una nueva especie de Heliotropium de la flora argentina
R. L. Pérez-Moreau	1963	Una nueva especie de Heliotropium de Neuquén (Boraginaceae)
D. J. Smith	1910	Undescribed plants from Guatemala and other Central American Republics. XXXIII
C. L. Lundell	1942	Undescribed plants from Mexico and Central America
E. Fenzl	1886	Vier neue Pflanzenarten Süd-Amerikas
W. D. Wiesenborn, Pratt G. F.	2010	Visitation of heliotrope and western purslane flowers by Hesperopsis gracielae (Lepidoptera: Hesperiidae)