@article {gottschling_characterisation_2004, title = {Characterisation of a novel fruit type found in Ehretia (Ehretiaceae, Boraginales)}, journal = {{BLUMEA}}, volume = {49}, number = {1}, year = {2004}, pages = {145{\textendash}153}, author = {Marc Gottschling and HH Hilger} } @article {gottschling_first_2003, title = {First fossil record of transfer cells in angiosperms}, volume = {90}, number = {6}, year = {2003}, pages = {957{\textendash}959}, author = {Marc Gottschling and HH Hilger} } @article {gottschling_phylogenetic_2001, title = {Phylogenetic analysis and character evolution of Ehretia and Bourreria (Ehretiaceae, Boraginales) and their allies based on {ITS1} sequences}, volume = {123}, number = {2}, year = {2001}, pages = {249{\textendash}268}, keywords = {Boraginales 2013}, author = {Marc Gottschling and HH Hilger} } @article {gottschling_testing_2004, title = {Testing hypotheses on disjunctions present in the primarily woody Boraginales: Ehretiaceae, Cordiaceae, and Heliotropiaceae, inferred from ITS1 sequence data}, journal = {Int. J. Plant Sci.}, volume = {165}, number = {4 Suppl.}, year = {2004}, pages = {S123{\textendash}S135}, abstract = {

Hypotheses on the origin of the current distribution patterns and bicontinental disjunctions of Cordiaceae, Ehretiaceae, and Heliotropiaceae (Primarily Woody Boraginales) are tested by pairwise comparison of Kimura two-parameter distances. Estimated absolute dates of fossils and geological events (plate tectonics, climate changes) were used to calibrate a molecular clock. A mid-Cretaceous origin of the Primarily Woody Boraginales is proposed with an initial diversification in South America. Plate tectonics appear to play a minor role in their phylogeography. Most disjunctions are best explained by the rare events of long-distance dispersal because of the widespread occurrence of drupaceous fruits and their potential for endozoochoria. Furthermore, migrations and extinctions might have played a considerable role in the formation of the current distribution patterns.

}, keywords = {{ITS1}, distribution, divergence rate, Kimura two-parameter distances, long-distance dispersal, paleoclimate, phylogeography, vicariance.}, author = {Marc Gottschling and Diane, N and HH Hilger and M. Weigend} } @article {diane_leaf_????, title = {Leaf anatomy and foliar trichomes in Heliotropiaceae and their systematic relevance}, journal = {Flora}, volume = {198}, number = {6}, year = {2003}, pages = {468{\textendash}485}, author = {Diane, N and Jacob, C and HH Hilger} } @article {clermont_verbreitung_2003, title = {Verbreitung und Differenzierung der mitteleurop{\"a}ischen Unterarten von Buglossoides arvensis (L.) I.M.Johnst. (Boraginaceae)}, journal = {Feddes Repert.}, volume = {114}, number = {1-2}, year = {2003}, pages = {58{\textendash}70}, abstract = {

The Corn Gromwell (Buglossoides arvensis) has two Central European subspecies, B. arvensis subsp. arvensis and B. arvensis subsp. sibthorpiana. The ITS1-region of 55 European samples was amplified and sequenced and it yielded a 238 bp fragment, which consistently differed by 15 substitutions between the two subspecies. The results suggest that the two subspecies indeed represent two independent taxa and have been confused mainly because of their morphological plasticity. Because of this confusion, distribution and abundance were poorly understood. The subspecies as here redefined can be distinguished as follows: B. arvensis subsp. arvensis has oblong cotyledons, a horizontal gynobase, an unthickened pedicel in fruit, and a cream-coloured corolla. B. arvensis subsp. sibthorpiana has circular cotyledons, an oblique gynobase, an obliquely thickened pedicel in fruit, and a light blue to (more rarely) cream-coloured corolla. The two taxa show some degree of ecological differentiation: B. arvensis subsp. arvensis is only found as a weed in winter cereals, whereas B. arvensis subsp. sibthorpiana is occasionally found as a weed in fields, but also on dry grasslands, sandy waste sites and road sides, and in dry, open forests.

}, author = {Clermont, A. and Zippel, E. and HH Hilger} } @article {buys_boraginaceae_2003, title = {Boraginaceae cymes are exclusively scorpioid and not helicoid}, journal = {Taxon}, volume = {52}, number = {4}, year = {2003}, pages = {719{\textendash}724}, abstract = {

Boraginaceae have erroneously been associated with helicoid cymes, when upon closer inspection they exclusively possess scorpioid cymes (cincinni). A discussion of the inflorescence structure in Boraginaceae is presented with the help of an over-view of monochasial branching systems and a three-dimensional representation thereof Reasons for the incorrect description of Boraginaceae inflorescences are also provided

}, author = {Buys, M. and HH Hilger} } @article {briechle_embryogenese_1988, title = {Die Embryogenese von Microparacaryum intermedium und die embryologische Klassifizierung der Boraginaceae nach Sou{\`e}ges}, journal = {Flora}, volume = {181}, year = {1988}, pages = {45{\textendash}59}, author = {Briechle, Monika and HH Hilger} } @article {bhle_island_1996, title = {Island colonization and evolution of the insular woody habit in Echium L. (Boraginaceae)}, volume = {93}, number = {21}, year = {1996}, pages = {11740{\textendash}11745}, author = {U.-R. B{\"o}hle and HH Hilger and Martin, W.F.} } @article {hilger_mikromorphologische_1986, title = {Mikromorphologische Untersuchungen an Klausenoberfl{\"a}chen von Boraginaceae II. Mattiastrum (Boiss.) Brand (Cynoglosseae)}, volume = {61}, year = {1986}, pages = {145{\textendash}165}, author = {HH Hilger} } @article {hilger_euro+med_2005, title = {The {Euro+Med} treatment of Boraginaceae in Willdenowia 34 - a response}, journal = {Willdenowia}, volume = {35}, year = {2005}, pages = {43{\textendash}48}, author = {HH Hilger and Marc Gottschling and Federico Selvi and Bigazzi, M. and E. Langstr{\"o}m and Zippel, E. and Diane, N. and M. Weigend} } @article {hilger_heteromerikarpie_1985, title = {Heteromerikarpie und Fruchtpolymorphismus bei Microparacaryum, gen. nov. (Boraginaceae)}, volume = {148}, number = {3-4}, year = {1985}, pages = {291{\textendash}312}, author = {HH Hilger and Balzer, M. and Frey, W. and Podlech, D.} } @article {hilger_evolution_1994, title = {Die Evolution der Rauhblattgew{\"a}chse (Boraginaceae) in Makaronesien}, volume = {8}, year = {1994}, pages = {23{\textendash}32}, author = {HH Hilger} } @article {hilger_morphology_1992, title = {Morphology of Heliotropium (Boraginaceae) dispersal units}, journal = {Bot. Acta}, volume = {105}, year = {1992}, pages = {387{\textendash}393}, abstract = {

In flowers of Heliotropium s.l. the primary carpel tips are overtopped by commissural outgrowths. Therefore the stylar cleft mimics a lateral orientation of the carpels. In species in which the fruit splits into four diaspores the separation tissues run through both the median and the transverse fruit planes. In species where only two two-seeded nutlets are developed the fruit splits within the false septa and each half is composed of parts of both carpels (\“syn-mericarpids\”).

}, author = {HH Hilger} } @article {hilger_diversitt_1992, title = {Diversit{\"a}t trotz starrer Form: die Klausen der Boraginaceae}, year = {1992}, pages = {157}, author = {HH Hilger} } @article {hilger_flower_1989, title = {Flower and fruit development in the Macaronesian endemic Ceballosia fruticosa (syn. Messerschmidia fruticosa, Boraginaceae, Heliotropioideae)}, volume = {166}, year = {1989}, pages = {119{\textendash}129}, keywords = {Angiosperms - Boraginaceae - Heliotropioideae - Ceballosia - Messerschmidia - Fruit morphology - anatomy - systematics - Flora of Macaronesia}, author = {HH Hilger} } @article {hilger_fruchtbiologische_1987, title = {Fruchtbiologische Untersuchungen an Heliotropioideae (Boraginaceae). I. Die Ontogenie der monospermen Fr{\"u}chte von Heliotropium supinum L.}, journal = {Flora}, volume = {179}, year = {1987}, pages = {291{\textendash}303}, author = {HH Hilger} } @article {hilger_flower_1987, title = {Flower and fruit development in Wigandia caracasana (Hydrophyllaceae)}, volume = {74}, number = {2}, year = {1987}, pages = {250{\textendash}259}, author = {HH Hilger} } @article {hilger_ontogenie_1985, title = {Ontogenie, Morphologie und systematische Bedeutung gefl{\"u}gelter und glochidientragender Cynoglosseae- und Eritrichieae-Fr{\"u}chte (Boraginaceae)}, journal = {Bot. Jahrb. Syst.}, volume = {105}, number = {1}, year = {1985}, pages = {323{\textendash}378}, author = {HH Hilger} } @article {hilger_wachstum_1984, title = {Wachstum und Ausbildungsformen des Gynoeceums von Rochelia (Boraginaceae)}, volume = {146}, year = {1984}, pages = {123{\textendash}139}, author = {HH Hilger} } @article {hilger_entwicklungstendenzen_1981, title = {Entwicklungstendenzen im Fruchtbau der anemochoren Boraginaceengattungen Mattiastrum und Paracaryum}, volume = {94}, year = {1981}, pages = {677{\textendash}687}, author = {HH Hilger} } @article {hilger_perikarpentwicklung_1981, title = {Die Perikarpentwicklung gefl{\"u}gelter Klausen aus dem Paracaryum -Verwandtschaftskreis (Cynoglosseae, Boraginaceae)}, volume = {138}, year = {1981}, pages = {73{\textendash}88}, author = {HH Hilger} } @article {gottschling_congruence_2005, title = {Congruence of a phylogeny of Cordiaceae (Boraginales) inferred from {ITS1} sequence data with morphology, ecology, and biogeography}, volume = {92}, year = {2005}, pages = {425{\textendash}437}, keywords = {Boraginales 2013}, author = {Marc Gottschling and Miller, JS and M. Weigend and HH Hilger} } @article {gottschling_systematic_2002, title = {The systematic position of Ehretia fossils (Ehretiaceae, Boraginales) from the European Tertiary and implications for character evolution}, volume = {121}, number = {2}, year = {2002}, pages = {149{\textendash}156}, author = {Marc Gottschling and Mai, D.H. and HH Hilger} } @article {gottschling_systematic_2004, title = {The systematic position of Ehretia cortesia nom. nov. (= Cortesia cuneifolia: Ehretiaceae, Boraginales) inferred from molecular and morphological data}, journal = {Taxon}, volume = {53}, number = {4}, year = {2004}, pages = {919{\textendash}923}, abstract = {

The systematic position of Argentinean Cortesia cuneifolia (Ehretiaceae, Boraginales) is investigated based both on morphological and on ITS1 sequence data. Inferred from a molecular phylogeny, monotypic Cortesia is not isolated from other taxa of Ehretiaceae as previously suggested, but is nested within Ehretia. Cortesia shares a two-parted endocarp with the Ehretia II subclade (including Ehretia microphylla ), which is considered as a derived condition within Ehretiaceae and is the most striking indication for a close relationship of the two. ITS1 sequence data and specialised leaf morphology suggest that Ehretia microphylla is probably the sister species of Cortesia cuneifolia, for which a new name is proposed: Ehretia cortesia.

}, keywords = {Boraginales 2013}, author = {Marc Gottschling and HH Hilger} } @article {selvi_phylogenetic_2004, title = {The phylogenetic relationships of Cynoglottis (Boraginaceae-Boragineae) inferred from {ITS}, {5.8S} and {trnL} sequences}, volume = {246}, number = {3-4}, year = {2004}, pages = {195{\textendash}209}, author = {Federico Selvi and Papini, A. and HH Hilger and Bigazzi, M. and Nardi, E.} } @article {selvi_molecular_2006, title = {Molecular phylogeny, morphology and taxonomic re-circumscription of the generic complex {Nonea/Elizaldia/Pulmonaria/Paraskevia} (Boraginaceae-Boragineae)}, volume = {55}, number = {4}, year = {2006}, pages = {907{\textendash}918}, keywords = {Boraginales 2013}, author = {Federico Selvi and Bigazzi, M. and HH Hilger and Papini, Al.} } @article {hilger_studies_2001, title = {{"Studies} in the Boraginaceae" - an index to the publications of Ivan M. Johnston dealing with the borage familiy}, volume = {11}, year = {2001}, pages = {1{\textendash}151}, keywords = {Boraginales 2013}, author = {HH Hilger and Zippel, E.} } @article {hilger_molecular_2004, title = {Molecular systematics of Boraginaceae tribe Boragineae based on {ITS1} and {trnL} sequences, with special reference to Anchusa s.l.}, volume = {94}, year = {2004}, pages = {201{\textendash}212}, author = {HH Hilger and Federico Selvi and Papini, A. and Bigazzi, M.} } @article {43, title = {J.G.C. Lehmann{\textquoteright}s {\textquoteright}Botanical Observations{\textquoteright} of 1818 on Coldenia, Colsmannia, Cynoglossum, and Omphalodes (commented translation)}, volume = {2}, year = {2014}, month = {2014///}, pages = {e1064}, abstract = {

An annotated English translation of a German early 19th century text including Latin diagnoses is presented with a high-quality scan of the original publication and direct links to the cited pages with taxon and literature citations (including TL-2 entries).

}, doi = {10.3897/BDJ.2.e1064}, url = {http://biodiversitydatajournal.com/articles.php?id=1064}, author = {HH Hilger and Cole, TCH and Federico Selvi} } @article {42, title = {Ontogeny, morphology, and systematic significance of glochidiate and winged fruits of Cynoglosseae and Eritrichieae (Boraginaceae)}, journal = {Plant diversity and evolution}, volume = {131}, year = {2014}, month = {2014///}, pages = {167 - 214}, abstract = {

The development of flowers and fruits of 23 species of the Cynoglosseae and Eritrichieae, formerly for the most part included in the genus \“Echinospermum\”, was studied morphologically and histologically by means of SEM and microtome sectioning. 1. The early floral ontogeny is strongly uniform in all species (as well as in two species of the Lithospermeae investigated in addition). The sepal, petal, and stamen primordia display a regular 2/5 spiral phyllotaxis. The two carpels develop very late, when the stamina already exhibit the thecae. Soon the flanks of the carpel primordia fuse and give rise to a gynoecial cone. 2. The four mericarps arise as lateral bulges of the carpels. Thereby the gynoecial cone splits up into a terminal style, an intermediate mericarp-bearing columella, and a basal disk. The latter will apparently act as nectary. The part of the fruit that remains on the plant when the nutlets are released is termed gynobase. 3. Just before the stylar slit closes, a low transverse ridge divides the basal cavity of the gynoecium into two shallow grooves. This ridge is interpreted as the septum. The four ovules develop within the angle between the septum and carpel wall, but are clearly located on the septum. Therefore the placentation is (marginal-)axile. In later developmental stages the funiculi remain united with the carpel walls by intercalary growth, feigning a parietal placentation. 4. From the very first the ovules grow diagonally upwards into the mericarpial cavities. Inside the gynoecium four apical and basal septa narrow the connections between ovarial and mericarpial chambers, leaving only a small tube for each funicle. The abscission layers develop inside these massive diaphragms. 5. False septa, often considered characteristic in the Boraginaceae, do not develop in all species. If present, they originate from subepidermal ventral meristems of the carpels. They are not necessary for the formation of the mericarps. 6. The initial globose shape of the Cynoglosseae nutlets remains until ripening. After bulging up from the gynoecial cone the gynobase grows in horizontal direction. So the nutlets attain a position with their disks parallel with the basal area of the gynoecium. The style seems to insert on the receptacle. A subsequent growth in vertical direction brings the mericarps to their final oblique position. In contrast, in the Eritrichieae a forced vertical growth of the gynobase produces the typical triangular shape and the continuously oblique position of the mericarps. Asperugo and Sclerocaryopsis confirm their isolated position within the Eritrichieae by unusual nutlet arrangement. Neighboring mericarps of different carpels turn to each other. 7. Most members of the Cynoglosseae and Eritrichieae exhibit a thickened rim or broad wing around the disk of the nutlets and/or glochids on the nutlet surface. It may be of systematic importance whether the wings are developed prior to glochids or vice versa. In the latter condition a subsequent peripheral growth of the nutlet margins may produce a broad glochidless rim analogous to a wing. After ontogenetic investigation, genera with similarly looking fruits can be distinguished. Heterocarpy as well as heteromericarpy displaying pairs with different wing and glochid equipment seem to have arisen independently in various genera. 8. A broadened definition for the terms \“eremocarps, mericarps, and fruits (Klausen, Klausenfr\üchte)\” is proposed. It may also be applied to the fruits of some other taxa in which parts of the fruit enclosing seeds break away and leave a gynobase.

}, keywords = {anatomy {\textbullet} boraginaceae {\textbullet} cynoglosseae {\textbullet} eritrichieae {\textbullet} flower {\textbullet} fruit {\textbullet} morphology {\textbullet} ontogeny {\textbullet} sem {\textbullet} systematics {\textbullet} terminology}, author = {HH Hilger} } @article {40, title = {Proposal to conserve the name Omphalodes verna against Omphalodes omphaloides (Boraginaceae)}, journal = {Taxon}, volume = {63}, year = {2014}, month = {2014///}, pages = {435}, author = {Greuter, W and Stier, V and HH Hilger} } @article {22, title = {Fossil and extant Western Hemisphere Boragineae, and the polyphyly of "Trigonotideae" Riedl (Boraginaceae: Boraginoideae)}, journal = {Systematic Botany}, volume = {35}, year = {2010}, note = {

doi: 10.1600/036364410X518874
0363-6445
doi: 10.1600/036364410X518874

}, month = {2010///}, pages = {409 - 419}, abstract = {null}, url = {http://www.bioone.org/doi/abs/10.1600/036364410X518874}, author = {M. Weigend and Marc Gottschling and Federico Selvi and HH Hilger} } @article {23, title = {Five new species of Lithospermum L. (Boraginaceae tribe Lithospermeae) in Andean South America: Another radiation in the Amotape-Huancabamba zone}, journal = {Taxon}, volume = {59}, year = {2010}, note = {

[1]
[2]
[3]
[4]

}, month = {2010///}, pages = {1161 - 1179}, url = {http://www.ingentaconnect.com/content/iapt/tax/2010/00000059/00000004/art00015}, author = {M. Weigend and Marc Gottschling and HH Hilger and Nicolai M. N{\"u}rk} } @article {24, title = {Codonaceae {\textemdash} a newly required family name in Boraginales}, journal = {Phytotaxa}, volume = {10}, year = {2010}, month = {2010///}, pages = {26 - 30}, author = {M. Weigend and HH Hilger} } @article {25, title = {Marbleseeds are gromwells - Systematics and evolution of Lithospermum and allies (Boraginaceae tribe Lithospermeae) based on molecular and morphological data}, journal = {Molecular Phylogenetics and Evolution}, volume = {52}, year = {2009}, month = {2009///}, pages = {755 - 768}, keywords = {America Fruit Historical biogeography Macromeria Nomosa Onosmodium Phylogeny Pollen morphology Timing}, url = {http://www.sciencedirect.com/science/article/B6WNH-4WBK7BK-3/2/5ef424fa3684d5c985634011154460d5}, author = {M. Weigend and Marc Gottschling and Federico Selvi and HH Hilger} } @article {26, title = {Phylogeny and systematics of Lithodora (Boraginaceae-Lithospermeae) and its affinities to the monotypic genera Mairetis, Halacsya and Paramoltkia based on ITS1 and trnL(UAA)-sequence data and morphology}, journal = {Taxon}, volume = {57}, year = {2008}, month = {2008/02//}, pages = {79 - 97}, isbn = {0040-0262}, author = {Thomas, Daniel C. and M. Weigend and HH Hilger} } @article {8, title = {Evidence for nonallopatric speciation among closely related sympatric Heliotropium species in the Atacama Desert}, journal = {Ecology and Evolution}, volume = {4}, year = {2014}, month = {2014///}, pages = {266 - 275}, abstract = {The genetic structure of populations of closely related, sympatric species may hold the signature of the geographical mode of the speciation process. In fully allopatric speciation, it is expected that genetic differentiation between species is homogeneously distributed across the genome. In nonallopatric speciation, the genomes may remain undifferentiated to a large extent. In this article, we analyzed the genetic structure of five sympatric species from the plant genus Heliotropium in the Atacama Desert. We used amplified fragment length polymorphisms (AFLPs) to characterize the genetic structure of these species and evaluate their genetic differentiation as well as the number of loci subject to positive selection using divergence outlier analysis (DOA). The five species form distinguishable groups in the genetic space, with zones of overlap, indicating that they are possibly not completely isolated. Among-species differentiation accounts for 35\% of the total genetic differentiation (FST = 0.35), and FST between species pairs is positively correlated with phylogenetic distance. DOA suggests that few loci are subject to positive selection, which is in line with a scenario of nonallopatric speciation. These results support the idea that sympatric species of Heliotropium sect. Cochranea are under an ongoing speciation process, characterized by a fluctuation of population ranges in response to pulses of arid and humid periods during Quaternary times.}, isbn = {2045-7758}, url = {http://onlinelibrary.wiley.com/doi/10.1002/ece3.929/abstract}, author = {Federico Luebert and Jacobs, Pit and HH Hilger and Muller, Ludo A. H.} } @article {9, title = {Multiple origins for Hound{\textquoteright}s tongues (Cynoglossum L.) and Navel seeds (Omphalodes Mill.) {\textendash} The phylogeny of the borage family (Boraginaceae s.str.)}, journal = {Molecular Phylogenetics and Evolution}, volume = {68}, year = {2013}, month = {2013/09//}, pages = {604 - 618}, abstract = {AbstractRecent studies all indicated that both the affinities and subdivision of Boraginaceae s.str. are unsatisfactorily resolved. Major open issues are the placement and affinities of Boraginaceae s.str. in Boraginales and the major clades of the family, with especially the large tribes Cynoglosseae and Eritrichieae repeatedly retrieved as non-monophyletic groups, and the doubtful monophyly of several larger genera, especially Cynoglossum and Omphalodes. The present study addresses and solves these questions using two plastid markers (trnL{\textendash}trnF, rps16) on the basis of a sampling including 16 outgroup taxa and 172 ingroup species from 65 genera. The phylogeny shows high statistical support for most nodes on the backbone and on the individual clades. Boraginaceae s.str. are sister to African Wellstediaceae, Wellstediaceae{\textendash}Boraginaceae s.str. is sister to African Codonaceae. Echiochileae are retrieved as sister to the remainder of Boraginaceae s.str., which, in turn, fall into two major clades, the Boragineae{\textendash}Lithospermeae (in a well-supported sister relationship) and the Cynoglosseae s.l. (including Eritrichieae). Cynoglosseae s.l. is highly resolved, with Trichodesmeae (incl. Microcaryum, Lasiocaryum) as sister to the remainder of the group. Eritrichieae s.str. (Eritrichium, Hackelia, Lappula) are resolved on a poorly supported polytomy together with the Omphalodes-clade (incl. Myosotidium, Cynoglossum p.p.), and the Mertensia-clade (incl. O. scorpioides, Asperugo). The Myosotideae (Myosotis, Trigonotis, Pseudomertensia) are retrieved in a well-supported sister-relationship to the core-Cynoglosseae, the latter comprising all other genera sampled. Cynoglossum is retrieved as highly para- and polyphyletic, with a large range of generic segregates embedded in Cynoglossum, but other species of Cynoglossum are sister to Microula or to the American {\textquotedblleft}Eritrichieae{\textquotedblright} (Cryptantha and allied genera). Representatives of the genus Cynoglossum in its current definition are segregated onto six independent lineages, members of Omphalodes onto three independent lineages. At least 11 of the genera here sampled are deeply nested in other genera. The data show that individual details of nutlet morphology (e.g., winged margins, glochidia) are highly homoplasious. Conversely, a complex of nutlet characters (e.g., characters of the gynobase and cicatrix together with nutlet orientation and sculpturing) tends to circumscribe natural units. Geographical distribution of major clades suggests that the family originated in Africa and western Asia and radiated to eastern Eurasia, with several independent dispersal events into Australia and the New World. }, keywords = {Boraginaceae, Nutlet morphology, Phytogeography}, isbn = {1055-7903}, url = {http://www.sciencedirect.com/science/article/pii/S1055790313001590}, author = {M. Weigend and Federico Luebert and Federico Selvi and Grischa Brokamp and HH Hilger} } @article {12, title = {Diversification in the Andes: Age and origins of South American Heliotropium lineages (Heliotropiaceae, Boraginales)}, journal = {Molecular Phylogenetics and Evolution}, volume = {61}, year = {2011}, month = {2011///}, pages = {90 - 102}, url = {http://dx.doi.org/10.1016/j.ympev.2011.06.001}, author = {Federico Luebert and HH Hilger and M. Weigend} } @article {13, title = {Phylogenetic relationships and morphological diversity in Neotropical Heliotropium (Heliotropiaceae)}, journal = {Taxon}, volume = {60}, year = {2011}, month = {2011///}, pages = {663 - 680}, url = {http://www.ingentaconnect.com/content/iapt/tax/2011/00000060/00000003/art00004}, author = {Federico Luebert and Grischa Brokamp and Wen, J. and M. Weigend and HH Hilger} } @article {15, title = {Epitypification of Heliotropium arborescens L. (Heliotropiaceae)}, journal = {Taxon}, volume = {59}, year = {2010}, month = {2010///}, pages = {1263 - 1266}, url = {http://www.ingentaconnect.com/content/iapt/tax/2010/00000059/00000004/art00023}, author = {Federico Luebert and M. Weigend and HH Hilger} } @article {1, title = {Molecular delimitations in the Ehretiaceae (Boraginales)}, journal = {Molecular Phylogenetics and Evolution}, volume = {72}, year = {2014}, month = {2014/03//}, pages = {1 - 6}, abstract = {Major taxa of Ehretiaceae (including parasitic Lennoaceae) have not all been included in previous molecular phylogenetic analyses. As a result, the generic limits and their circumscriptions have not been satisfactorily resolved, despite its importance for floristic studies. To clarify which monophyletic groups can be recognized within the Ehretiaceae, sequences from one nuclear (ITS) and three plastid loci (rps16, trnL{\textendash}trnF, trnS{\textendash}trnG) were obtained from 67 accessions tentatively assigned to the Ehretiaceae (including 91 new GenBank entries) and covering the known diversity of the group. In phylogenetic analyses, Ehretiaceae were monophyletic when Lennoaceae were included and segregated into nine monophyletic lineages that correspond to accepted, morphologically distinct taxonomic units, namely Bourreria (s.l., paraphyletic in its current circumscription if not including Hilsenbergia), monotypic Cortesia, Ehretia (s.l., paraphyletic in its current circumscription if not including Carmona and Rotula), Halgania, monotypic Lennoa, Lepidocordia, Pholisma, Rochefortia, and Tiquilia. Bourreria and Ehretia have representatives in both the Old World and the New World, but all other taxa are restricted to the tropical and subtropical Americas (Cortesia, Lennoa, Lepidocordia, Pholisma, Rochefortia, Tiquilia) or Australia (Halgania). The historical biogeography of Ehretiaceae can be explained by few colonization events. The molecular trees are also discussed with respect to fruit evolution, where the fusion of endocarp parts may have taken place several times independently.}, isbn = {1055-7903}, url = {http://www.sciencedirect.com/science/article/pii/S1055790313004405}, author = {Marc Gottschling and Federico Luebert and HH Hilger and James S. Miller} } @article {2, title = {From capsules to nutlets {\textendash} Phylogenetic relationships in the Boraginales}, journal = {Cladistics}, volume = {30}, year = {2014}, month = {2014}, pages = {508-518}, doi = {10.1111/cla.12061}, url = {http://onlinelibrary.wiley.com/doi/10.1111/cla.12061/abstract}, author = {M. Weigend and Federico Luebert and Marc Gottschling and Couvreur, T. L. P. and HH Hilger and James S. Miller} }