02678nas a2200289 4500008004100000245011500041210006900156300001200225490000700237520182400244653001502068653003202083653000802115653001402123653000902137653000802146653002102154653001602175653001602191653002102207653002202228100002102250700002302271700002902294700001702323856004802340 2019 eng d00aIncongruence of morphological determinations and DNA barcode sequences: a case study in Cinnamomum (Lauraceae)0 aIncongruence of morphological determinations and DNA barcode seq a383-4000 v493 a

In the course of molecular systematic studies of Lauraceae we received a sample of a plant cultivated under the name Cinnamomum porrectum in the Botanical Garden München-Nymphenburg. Preliminary determinations, both morphologically based on the Flora of China (Li & al. 2008) and by chloroplast sequences (psbA-trnH spacer, trnK intron including matK gene, trnL intron, trnL-trnF spacer and trnQ-rps16 spacer) obtained by Sanger sequencing suggested that it was C. camphora, still the plant looked different from other individuals of C. camphora cultivated in the botanical gardens of Berlin, Hamburg, Mainz, Munich and Oldenburg. Attempts to sequence the more informative nuclear internal transcribed spacer repeatedly led to mixed signals. We therefore used Illumina sequencing on a set of pre-amplified molecular markers (ITS, trnK 3′ and 5′ intron, trnL intron, and the intergenic spacers psbA-trnH, trnL-trnF, as well as parts of the trnQ-rps16 spacer), and downloaded available sequences of C. camphora and C. parthenoxylon from GenBank for comparison. Considerable differences were found among these sequences, but the haplotype groups do not coincide with the current species determinations. Particularly the internal transcribed spacer sequences are rather diverse, suggesting possible misidentifications, contaminations, and/or a common gene pool that is larger than anticipated. Concerning the plant in question, our results suggest that it may be a hybrid, with C. camphora as the maternal and another species, possibly C. parthenoxylon, as the paternal parent.

10aCinnamomum10ainterspecific hybridization10aITS10aLauraceae10amatK10aNGS10apsbA-trnH spacer10atrnK intron10atrnL intron10atrnL-trnF spacer10atrnQ-rps16 spacer1 aRohwer, Jens, G.1 aTrofimov, Dimitrij1 aMayland-Quellhorst, Eike1 aAlbach, Dirk uhttps://lauraceae.myspecies.info/node/2039701336nas a2200181 4500008004100000245010600041210006900147260001200216300001000228490000700238520077900245653001201024653001401036653001201050100002301062700002101085856004801106 2018 eng d00aEpidermal features allowing identification of evolutionary lineages in the Ocotea complex (Lauraceae)0 aEpidermal features allowing identification of evolutionary linea c01/2018 a17-350 v313 a

Epidermal characters are widely used in identification of fossil plant material, yet they are insufficiently known in many extant taxa. Here, we examined the cuticle and stomatal complex in 85 species of the Ocotea complex by optical and scanning electron microscopy. We defined 19 types of stomatal surface appearance, which were mostly consistent with genera or species groups recognized based on reproductive characteristics. The epidermal features support the conclusion derived from DNA analyses that Ocotea is heterogeneous in its current circumscription. We suggest an evolution of the subsidiary cells in the Ocotea complex species from asymmetric to symmetric, and from relatively wide to narrower shapes of the stomatal complex.

10acuticle10aevolution10astomata1 aTrofimov, Dimitrij1 aRohwer, Jens, G. uhttps://lauraceae.myspecies.info/node/2036902523nas a2200181 4500008004100000245005900041210005700100260001200157300001300169490000700182520201500189100001502204700001402219700002402233700002102257700001502278856004802293 2017 eng d00aFloral structure and ontogeny of Syndiclis (Lauraceae)0 aFloral structure and ontogeny of Syndiclis Lauraceae c10/2017 ae01863580 v123 a

Generic delimitation in the Beilschmiedia group of the Lauraceae remains ambiguous because flowering specimens of a few genera with confined distribution are poorly represented in herbaria, and a few floral characters important for taxonomy are still poorly known. Syndiclis is sporadically distributed in southwestern China, and is represented in the herbaria by only a few flowering specimens. We conducted field investigations to collect floral materials of four species and observed structures and ontogeny of the tiny flowers using both light microscopy (LM) and scanning electron microscopy (SEM). The results show that the genus Syndiclis possesses flowers with huge variation in both merosity and organ number. Flowers of the genus are dimerous, trimerous, or tetramerous, or have mixed merosity with monomerous and dimerous, or dimerous and trimerous, or trimerous and tetramerous whorls. The number of staminodes ranges from two to eight, depending on floral merosity, and on how many stamens of the third androecial whorl are reduced to staminodes. The staminodes of the fourth androecial whorl are comparable to the staminodes in Potameia, but the staminodes of the third androecial whorl of Syndiclis are relatively larger than the staminodes in Potameia. They are erect or curved inwards, covering the ovary. The anthers are usually two-locular, but rarely one-locular or three-locular. Each stamen of the third androecial whorl bears two conspicuous and enlarged glands at the base. The lability of floral merosity and organ number of Syndiclis may have been caused by changes of pollination system and loss of special selective pressures that are present in most Lauraceous plants with fixed floral organ number. This study furthers our understanding of variation and evolution of a few important characters of the Beilschmiedia group and provides essential data for a revised generic classification of the group.

1 aZeng, Gang1 aLiu, Bing1 aFerguson, David, K.1 aRohwer, Jens, G.1 aYang, Yong uhttps://lauraceae.myspecies.info/node/2036101456nas a2200193 4500008004100000245008100041210006900122520087800191653001701069653001801086653001401104653001801118653001301136653001701149653001301166653001401179100002101193856004801214 2017 eng d00aA contribution to the pollen morphology of the Cryptocarya group (Lauraceae)0 acontribution to the pollen morphology of the Cryptocarya group L3 a

In this study, pollen grains of 74 taxa (84 specimens) of the Cryptocarya group, including 22 type collections, have been examined by scanning electron microscopy. Pollen grains of Aspidostemon, Endiandra, Hexapora, Potameia and Triadodaphne are described here for the first time. For the other genera (Beilschmiedia, Cryptocarya, Eusideroxylon, Potoxylon) the results of previous studies are largely confirmed, but a novel type of exine covered by clavate-baculate structures was found in a few Cryptocarya species (C. gracilis and C. macrodesme from New Caledonia, C. saligna from South America). A larger diversity of spinule morphology and density than hitherto known is documented among the African species of Beilschmiedia.

10aAspidostemon10aBeilschmiedia10aEndiandra10aEusideroxylon10aHexapora10ainaperturate10aPotameia10aPotoxylon1 aRohwer, Jens, G. uhttps://lauraceae.myspecies.info/node/2036002392nas a2200157 4500008004100000245009100041210006900132260001200201300001200213490000700225520188900232100002302121700002102144700002102165856004802186 2016 eng d00aPhylogenetic study of the genus Nectandra (Lauraceae), and reinstatement of Damburneya0 aPhylogenetic study of the genus Nectandra Lauraceae and reinstat c10/2016 a980-9960 v653 a

Earlier studies indicated that the genus Nectandra, currently the second-largest genus of the Neotropical Lauraceae, might be diphyletic in its traditional circumscription, but the evidence was not quite conclusive. Our phylogenetic analyses based on nuclear (ITS) and chloroplast (psbA-trnH) sequences of 45 Nectandra species as well as 42 representatives of 18 genera of the core Lauraceae (Ocotea complex, Laureae, Aiouea, Asian Cinnamomum and Persea groups) confirm the suspicion that Nectandra is diphyletic. The two groups, Nectandra s.str. and the N. coriacea group, are each well supported in the maximum parsimony and Bayesian analyses, but they are not sister to each other. Nectandra s.str. is sister to Pleurothyrium, and the clade including Nectandra s.str. and Pleurothyrium is very likely closer to the dioecious taxa of the Ocotea complex. The N. coriacea group, on the other hand, appears to be closer to bisexual taxa known as the Ocotea helicterifolia group. In addition, Nectandra s.str. is characterized by a large deletion in the psbA-trnH spacer compared to all other core Lauraceae, including its sister group Pleurothyrium. Considering these facts, Nectandra cannot be maintained in the traditional sense. We therefore transfer the species of the N. coriacea group to the oldest generic name applied to this group, Damburneya . On the basis of fossil records from the American subcontinents and in accordance with previous phylogenetic and molecular clock studies we suggest a scenario of a climate-driven migration from North to South America, with a subsequent rapid radiation of Nectandra s.str. in South America.

1 aTrofimov, Dimitrij1 aRudolph, Barbara1 aRohwer, Jens, G. uhttps://lauraceae.myspecies.info/node/2034602236nas a2200169 4500008004100000245014400041210006900185300001200254490000700266520163400273100002401907700002501931700002101956700001901977700002201996856004802018 2015 eng d00aCharacterization of Hawaiian Cryptocarya (Lauraceae): recognition of a critically endangered species and relation to non-Hawaiian congeners0 aCharacterization of Hawaiian Cryptocarya Lauraceae recognition o a103-1150 v693 a

Abstract: Proper taxonomic classification of species is essential to the conservation of rare species to ensure that they garner needed protection. This study was undertaken to determine relationships among the Hawaiian representatives of Cryptocarya. This genus is represented in Hawai‘i on the islands of Kaua‘i and O‘ahu, where it is currently classified as a single species (C. mannii) and not considered endangered. It had previously been recognized as two species, C. mannii on Kaua‘i where it is relatively abundant and C. oahuensis on O‘ahu. O‘ahu plants have been in decline since their discovery over 100 yr ago and now only one naturally occurring plant is known. RAPD analysis demonstrates that populations on Kaua‘i are genetically distinct from those on O‘ahu. Sequence analysis of nuclear ( ITS) and plastid (trnK intron) gene regions shows distinctions among plants from different islands ( ITS: four or five base substitutions plus one repeat length difference; trnK intron: one base substitution plus one repeat length difference). Differentiation identified here is comparable with that of some congeneric species elsewhere and is consistent with recognition of C. oahuensis and C. mannii as separate species. Both species are members of the Asian-Australian clade in a broader phylogenetic analysis. Morphological traits that distinguish each species are examined, and a key to the species is provided. Conservation measures to protect the critically endangered C. oahuensis are discussed.

1 aMorden, Clifford, W1 aHarbin, Susan, Ching1 aRohwer, Jens, G.1 aPortner, Talia1 aYorkston, Mitsuko uhttps://lauraceae.myspecies.info/node/2033202587nas a2200301 4500008004100000245014200041210006900183300001000252490000700262520164000269653003001909653001701939653002901956653002101985653001402006653002402020100002102044700001302065700002402078700001602102700002102118700002202139700001802161700002702179700001902206700001202225856004802237 2016 eng d00aOrigins and evolution of cinnamon and camphor: A phylogenetic and historical biogeographical analysis of the Cinnamomum group (Lauraceae)0 aOrigins and evolution of cinnamon and camphor A phylogenetic and a33-440 v963 a

Tropical and subtropical amphi-Pacific disjunction is among the most fascinating distribution patterns, but received little attention. Here we use the fossil-rich Cinnamomum group, a primarily tropical and sub-tropical Asian lineage with some species distributed in Neotropics, Australasia and Africa to shed light upon this disjunction pattern. Phylogenetic and biogeographic analyses were carried out using sequences of three nuclear loci from 94 Cinnamomum group and 13 outgroup samples. Results show that although there are three clades within a monophyletic Cinnamomum group, Cinnamomum and previously recognized subdivisions within this genus were all rejected as natural groups. The Cinnamomum group appears to have originated in the widespread boreotropical paleoflora of Laurasia during the early Eocene (ca. 55 Ma). The formation and breakup of the boreotropics seems to have then played a key role in the formation of intercontinental disjunctions within the Cinnamomum group. The first cooling interval (50–48 Ma) in the late early Eocene resulted in a floristic discontinuity between Eurasia and North America causing the tropical and subtropical amphi-Pacific disjunction. The second cooling interval in the mid-Eocene (42–38 Ma) resulted in the fragmentation of the boreotropics within Eurasia, leading to an African–Asian disjunction. Multiple dispersal events from North into South America occurred from the early Eocene to late Miocene and a single migration event from Asia into Australia appears to have occurred in the early Miocene.

10aAmphi-Pacific disjunction10aBiogeography10aBoreotropical paleoflora10aCinnamomum group10aLauraceae10amolecular phylogeny1 aHuang, Jian-Feng1 aLi, Lang1 avan der Werff, Henk1 aLi, Hsi-Wen1 aRohwer, Jens, G.1 aCrayn, Darren, M.1 aMeng, Hong-Hu1 avan der Merwe, Marlien1 aConran, J., G.1 aLi, Jie uhttps://lauraceae.myspecies.info/node/2032000334nas a2200121 4500008004100000022002200041245001400063210001400077260004100091490001100132100002100143856004800164 2014 eng d a978-3-87429-450-800aLauraceae0 aLauraceae aKönigsteinbKoeltz Scientific Books0 v19 (2)1 aRohwer, Jens, G. uhttps://lauraceae.myspecies.info/node/1980702285nas a2200217 4500008004100000022001400041245014100055210006900196260001200265300001200277490000800289520157600297653001701873653001401890653002201904100002101926700002701947700002101974700002401995856004802019 2014 eng d a1179-316300aA phylogenetic analysis of the Cryptocarya group (Lauraceae), and relationships of Dahlgrenodendron, Sinopora, Triadodaphne, and Yasunia0 aphylogenetic analysis of the Cryptocarya group Lauraceae and rel c02/2014 a111-1320 v1583 a

A phylogenetic analysis based on nuclear ITS and plastid trnK intron sequences confirms that Dahlgrenodendron, Sinopora, Triadodaphne, and Yasunia are members of the Cryptocarya group, as expected from morphology.  Dahlgrenodendron from South Africa is sister to Aspidostemon from Madagascar. Triadodaphne inaequitepala is nested within Endiandra (both from Australasia), and Yasunia from South America is nested among South American Beilschmiedia species. Sinopora is a member of the Beilschmiedia clade, but its precise position is still uncertain.  Among large genera of the group, Cryptocarya is clearly monophyletic, and Endiandra appears to be as well, if T. inaequitepala is included. Beilschmiedia is paraphyletic with respect to (at least) Potameia and Yasunia. Most well-supported clades within genera are geographically homogeneous, except a clade including the Chilean Cryptocarya alba and two New Caledonian species. Both Beilschmiedia and Cryptocarya have reached the Americas more than once.  Four-locular anthers are plesiomorphic in the Cryptocarya group; two-locular anthers have arisen by fusion of the two pollen sacs of a theca. In the plesiomorphic fruit type, the ovary is completely enclosed in receptacular tissue; a superior fruit, seated free on its pedicel, is a synapomorphy of the Beilschmiedia clade.

10aBiogeography10aevolution10afloral morphology1 aRohwer, Jens, G.1 aMoraes, Pedro, L.R. de1 aRudolph, Barbara1 avan der Werff, Henk uhttps://lauraceae.myspecies.info/node/1980300850nas a2200181 4500008004100000245007600041210006900117260001200186300001200198490000700210520032700217653001800544653001400562653001400576653000900590100002100599856004800620 2012 eng d00aNectandra ovatocaudata, a new species of Lauraceae from Cajamarca, Peru0 aNectandra ovatocaudata a new species of Lauraceae from Cajamarca c11/2012 a220-2220 v223 a

A new species of Nectandra Rol. ex Rottb. (Lauraceae) from Cajamarca, Peru, is described and illustrated. Nectandra ovatocaudata Rohwer appears to be related to N. amazonum Nees, but differs in its leaf shape, in having a receptacle that is densely pubescent inside, and in its habitat.

10aIUCN Red List10aLauraceae10aNectandra10aPeru1 aRohwer, Jens, G. uhttps://lauraceae.myspecies.info/node/1975600834nas a2200265 4500008004100000245017500041210006900216300001400285490000700299653001600306653001500322653001300337653001300350653001500363653001100378653001100389653001900400100001300419700001200432700002100444700002400465700001500489700001600504856004800520 2011 eng d00aMolecular phylogenetic analysis of the Persea group (Lauraceae) and its biogeographic implications on the evolution of tropical and subtropical Amphi-Pacific disjunctions0 aMolecular phylogenetic analysis of the Persea group Lauraceae an a1520-15360 v9810aAlseodaphne10aApollonias10aDehaasia10aMachilus10aNotaphoebe10aPersea10aPhoebe10aplant taxonomy1 aLi, Lang1 aLi, Jie1 aRohwer, Jens, G.1 avan der Werff, Henk1 aWang, Z.H.1 aLi, Hsi-Wen uhttps://lauraceae.myspecies.info/node/1975300495nas a2200109 4500008004100000245009800041210006900139300001400208490000800222100002100230856013400251 1988 eng d00aThe genera Dicypellium, Phyllostemonodaphne, Systemonodaphne, and Urbano­dendron (Lauraceae)0 agenera Dicypellium Phyllostemonodaphne Systemonodaphne and Urban a157–1710 v1101 aRohwer, Jens, G. uhttps://lauraceae.myspecies.info/content/genera-dicypellium-phyllostemonodaphne-systemonodaphne-and-urbano%C2%ADdendron-lauraceae00446nas a2200109 4500008004100000245007700041210006900118300000800187490000700195100002100202856011300223 1986 eng d00aProposal to conserve 2789 Umbellularia against Sciadiodaphne (Lauraceae)0 aProposal to conserve 2789 Umbellularia against Sciadiodaphne Lau a7470 v351 aRohwer, Jens, G. uhttps://lauraceae.myspecies.info/content/proposal-conserve-2789-umbellularia-against-sciadiodaphne-lauraceae00370nas a2200109 4500008004100000245004900041210004700090300001200137490000800149100002100157856008200178 1986 eng d00aSome aspects of dioecy in Ocotea (Lauraceae)0 aSome aspects of dioecy in Ocotea Lauraceae a47–480 v1521 aRohwer, Jens, G. uhttps://lauraceae.myspecies.info/content/some-aspects-dioecy-ocotea-lauraceae