Literature

Authors	Year	Title
H. H. Hilger, Zippel E.	2001	"Studies in the Boraginaceae": An index to the publications of Ivan M. Johnston dealing with the Borage family
H. H. Hilger, Diane N.	2003	A systematic analysis of Heliotropiaceae (Boraginales) based on trnL and ITS1 sequence data
N. Diane, Förther, H., Hilger, H. H.	2002	A systematic analysis of Heliotropium, Tournefortia, and allied taxa of the Heliotropiaceae (Boraginales) based on ITS1 sequences and morphological data
M. H. Buys, Hilger H. H.	2003	Boraginaceae cymes are exclusively scorpioid and not helicoid
F. Luebert, Hilger, H. H., Weigend, M.	2011	Diversification in the Andes: Age and origins of South American Heliotropium lineages (Heliotropiaceae, Boraginales)
P. Pliscoff, Luebert, F., Hilger, H. H., Guisan, A.	2014	Effects of alternative sets of climatic predictors on species distribution models and associated estimates of extinction risk: A test with plants in an arid environment
F. Luebert, Weigend, M., Hilger, H. H.	2010	Epitypification of Heliotropium arborescens L. (Heliotropiaceae)
F. Luebert, Jacobs, P., Hilger, H. H., Muller, L. A. H.	2014	Evidence for nonallopatric speciation among closely related sympatric Heliotropium species in the Atacama Desert
H. H. Hilger	1989	Flower and fruit development in the Macaronesian endemic Ceballosia fruticosa (syn. Messerschmidia fruticosa, Boraginaceae, Heliotropioideae)
H. H. Hilger	1987	Fruchtbiologische Untersuchungen an Heliotropioideae (Boraginaceae). I. Die Ontogenie der monospermen Früchte von Heliotropium supinum L.
N. Diane, Jacob, C., Hilger, H. H.	2003	Leaf anatomy and foliar trichomes in Heliotropiaceae and their systematic relevance
H. H. Hilger	1992	Morphology of Heliotropium (Boraginaceae) dispersal units
F. Luebert, Brokamp, G., Wen, J., Weigend, M., Hilger, H. H.	2011	Phylogenetic relationships and morphological diversity in Neotropical Heliotropium (Heliotropiaceae)
M. Gottschling, Hilger, H. H., Wolf, M., Diane, N.	2001	Secondary structure of the ITS1 transcript and its application in a reconstruction of the phylogeny of Boraginales
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
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
N. Diane, Hilger, H. H., Gottschling, M.	2002	Transfer cells in the seeds of Boraginales
F. Luebert, Hilger H. H.	2014	Typification of Heliotropium and Tournefortia (Heliotropiaceae) species described by Ruiz and Pavón