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| 1 | A worldwide phylogenetic classification of the Poaceae (Gramineae) Ⅲ: An update显示文摘We present an updated worldwide phylogenetic classification of Poaceae with 11783 species in 12 subfamilies,7 supertribes,54 tribes,5 super subtribes,109 subtribes,and 789 accepted genera.The subfamilies(in descending order based on the number of species)are Pooideae with 4126 species in 219 genera,15 tribes,and 34 subtribes;Panicoideae with 3325 species in 242 genera,14 tribes,and 24 subtribes;Bambusoideae with 1698 species in 136 genera,3 tribes,and 19 subtribes;Chloridoideae with 1603 species in 121 genera,5 tribes,and 30 subtribes;Aristidoideae with 367 species in three genera and one tribe;Danthonioideae with 292 species in 19 genera and 1 tribe;Micrairoideae with 192 species in nine genera and three tribes;Oryzoideae with 117 species in 19 genera,4 tribes,and 2 subtribes;Arundinoideae with 36 species in 14 genera and 3 tribes;Pharoideae with 12 species in three genera and one tribe;Puelioideae with 11 species in two genera and two tribes;and the Anomochlooideae with four species in two genera and two tribes.Two new tribes and 22 new or resurrected subtribes are recognized.Forty-five new(28)and resurrected(17)genera are accepted,and 24 previously accepted genera are placed in synonymy.We also provide an updated list of all accepted genera including common synonyms,genus authors,number of species in each accepted genus,and subfamily affiliation.We propose Locajonoa,a new name and rank with a new combination,L.coerulescens.The following seven new combinations are made in Lorenzochloa:L.bomanii,L.henrardiana,L.mucronata,L.obtusa,L.orurensis,L.rigidiseta,and L.venusta. | Robert J.Soreng Paul M.Peterson Fernando O.Zuloaga Konstantin Romaschenko Lynn G.Clark Jordan K.Teisher Lynn J.Gillespie Patricia Barberá Cassiano A.D.Welker Elizabeth A.Kellogg De-Zhu Li Gerrit Davidse | 2022 | Journal of Systematics and Evolution2022，60，3： | 1 |
| 2 | A reevaluation of the Andean Genus Petroravenia (Brassicaceae: Thelypodieae) based on morphological and molecular data显示文摘Petroravenia was until recently considered as a genus of three species(P.eseptata,P.friesii,and P.werdermannii)distributed along the Central Andes of Argentina,Bolivia,Chile,and Peru.This genus was included in the tribe Thelypodieae and was morphologically characterized by being tiny rhizomatous perennial herbs with rosulate leaves,dendritic trichomes,capsular silicles,and incumbent cotyledons.However,the phylogeny of Petroravenia,and its tribal placement,was never analyzed using molecular data.The lack of such studies,as well as the paucity of herbarium collections,suggesting that Petroravenia species are vulnerable and/or endangered,prompted us to address the molecular phylogeny of this genus.For this purpose,we generated comprehensive molecular phylogenies using nuclear(ITS)and plastid(trnL‐F and trnH‐psbA)data,and conducted morphological comparisons between these species and their closest related taxa.Results from the phylogenetic analyses showed that Petroravenia represents a polyphyletic group,with P.eseptata included in tribe Halimolobeae,and P.friesii and P.werdermannii placed within tribe Eudemeae and related to the genus Alshehbazia.Based on the results obtained from morphological and molecular data,we decided herein to retain the original circumscription of Petroravenia as monospecific within the tribe Halimolobeae and to transfer P.friesii and P.werdermannii to the genus Alshehbazia within the tribe Eudemeae.Systematic implications of these results are also discussed. | Diego L.Salariato Fernando O.Zuloaga Ihsan A.Al-Shehbaz | 2020 | Journal of Systematics and Evolution2020，58，1： | 0 |
| 3 | Grasses through space and time: An overview of the biogeographical and macroevolutionary history of Poaceae显示文摘Grasses are widespread on every continent and are found in all terrestrial biomes.The dominance and spread of grasses and grassland ecosystems have led to significant changes in Earth′s climate,geochemistry,and biodiversity.The abundance of DNA sequence data,particularly chloroplast sequences,and advances in placing grass fossils within the family allows for a reappraisal of the family′s origins,timing,and geographic spread and the factors that have promoted diversification.We reconstructed a time-calibrated grass phylogeny and inferred ancestral areas using chloroplast DNA sequences from nearly 90%of extant grass genera.With a few notable exceptions,the phylogeny is well resolved to the subtribal level.The family began to diversify in the Early–Late Cretaceous(crown age of 98.54 Ma)on West Gondwana before the complete split between Africa and South America.Vicariance from the splitting of Gondwana may be responsible for the initial divergence in the family.However,Africa clearly served as the center of origin for much of the early diversification of the family.With this phylogenetic,temporal,and spatial framework,we review the evolution and biogeography of the family with the aim to facilitate the testing of biogeographical hypotheses about its origins,evolutionary tempo,and diversification.The current classification of the family is discussed with an extensive review of the extant diversity and distribution of species,molecular and morphological evidence supporting the current classification scheme,and the evidence informing our understanding of the biogeographical history of the family. | Timothy J.Gallaher Paul M.Peterson Robert J.Soreng Fernando O.Zuloaga De-Zhu Li Lynn G.Clark Christopher D.Tyrrell Cassiano A.D.Welker Elizabeth A.Kellogg Jordan K.Teisher | 2022 | Journal of Systematics and Evolution2022，60，3： | 0 |
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