01751nas a2200229 4500008004100000245007600041210006900117260001200186300001200198490000700210520110500217653001701322653002301339653001201362653001901374653001401393653001401407100001801421700001801439700001601457856004801473 2014 eng d00aHigh diversity of Lauraceae from the Oligocene of Ningming, South China0 aHigh diversity of Lauraceae from the Oligocene of Ningming South c09/2014 a336-3560 v233 a
Lauraceae is among the largest and floristically most important woody plant families in subtropical and tropical zones. However, the Cenozoic fossil records of Lauraceae are mostly from mid-latitude regions. Here we described eight lauraceous species from the Oligocene of Ningming, Guangxi, South China on the basis of leaf compressions with cuticular structure, providing new evidence for high diversity of Lauraceae in the low latitude region of the northern hemisphere during the late Paleogene. The extant genera to which the Ningming Oligocene fossils are possibly closely related include Cinnamomum, Neolitsea, Litsea, Alseodaphne, Laurus, and Beilschmiedia. All of these extant genera except Laurus still exist in Guangxi today, whereas Laurus is currently distributed in the Mediterranean and adjacent regions. A cladistic analysis based on leaf architectural and leaf cuticular characters for Paleogene Lauraceae species in the world indicated a possible relationship between European and East Asian Paleogene species.
10aBiogeography10aCladistic analysis10acuticle10aHigh diversity10aLauraceae10aOligocene1 aLe Shi, Gong-1 aXie, Zhi-Ming1 aLi, Hao-Min uhttps://lauraceae.myspecies.info/node/2040601336nas 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 aEpidermal 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/2036902148nas a2200193 4500008004100000245013100041210006900172260001200241300001000253490000800263520153300271653001201804653001401816653001501830100002101845700002501866700001501891856004801906 2016 eng d00aCuticular features of Cryptocarya (Lauraceae) from Peninsular Malaysia, Thailand and Indo-China and its taxonomic implications0 aCuticular features of Cryptocarya Lauraceae from Peninsular Mala c01/2016 a26-440 v2443 aCuticular features potentially offer valuable information on phytotaxonomy, especially for plants that are difficult to classify or identify. Cryptocarya is one such difficult and poorly known genus, and we investigated its cuticular features to evaluate their taxonomic implications. We examined cutinized leaf epidermis and the stomatal complex for 21 species from Peninsular Malaysia, Thailand and Indo-China, as well as one species endemic to Borneo and one to Sumatra, and compared features among members of this group, between this group and congeners in the other countries, and between this group and the other genera of Lauraceae. Many of the Cryptocarya species studied have straight to slightly curved anticlinal epidermal walls and butterfly-shaped stomatal ledges, although some variation was seen in the ornamentation of the periclinal epidermal walls and the appearance of the stomatal complex. Based on these results, we recognized four groups and two subgroups among the South-east Asian species. Comparison with congeneric taxa in the other countries indicates that butterfly-shaped stomatal ledges are often shared among the species across the regions. However, no cuticular features occur exclusively in any of the species groups of Cryptocarya studied here, nor in the genus as a whole. We consider that cuticular features are useful in the recognition of infrageneric groups within Lauraceae, bearing in mind that they might have evolved in parallel in different genera.
10acuticle10aepidermis10aMorphology1 aNishida, Sachiko1 ade Kok, Rogier, P.J.1 aYang, Yong uhttps://lauraceae.myspecies.info/node/2036600585nas a2200181 4500008004100000245006400041210006200105300000900167490000600176653001800182653001200200653001700212653002000229653001300249100002100262700002700283856009300310 1999 eng d00aLeaf anatomy of Beilschmiedia (Lauraceae) in the neotropics0 aLeaf anatomy of Beilschmiedia Lauraceae in the neotropics a9-430 v410aBeilschmiedia10acuticle10aleaf anatomy10avascular bundle10avenation1 aNishida, Sachiko1 aChristophel, David, C. uhttps://lauraceae.myspecies.info/content/leaf-anatomy-beilschmiedia-lauraceae-neotropics