Weigend, M., M.  Gottschling, F.  Selvi, and H. H.  Hilger. 2010. ?Fossil and extant Western Hemisphere Boragineae, and the polyphyly of "Trigonotideae" Riedl (Boraginaceae: Boraginoideae)?. Systematic Botany 35(2):409 - 419. Retrieved  (http://www.bioone.org/doi/abs/10.1600/036364410X518874).

Weigend, M., M.  Gottschling, H. H.  Hilger, and N. M.  Nürk. 2010. ?Five new species of Lithospermum L. (Boraginaceae tribe Lithospermeae) in Andean South America: Another radiation in the Amotape-Huancabamba zone?. Taxon 59(4):1161 - 1179. Retrieved  (http://www.ingentaconnect.com/content/iapt/tax/2010/00000059/00000004/art00015).

Weigend, M., and H. H.  Hilger. 2010. ?Codonaceae ? a newly required family name in Boraginales?. Phytotaxa 10:26 - 30.

Luebert, F., M.  Weigend, and H. H.  Hilger. 2010. ?Epitypification of Heliotropium arborescens L. (Heliotropiaceae)?. Taxon 59(4):1263 - 1266. Retrieved  (http://www.ingentaconnect.com/content/iapt/tax/2010/00000059/00000004/art00023).