Australian Systematic Botany最新文献_第6页

An integrative taxonomic approach resolves the Prostanthera lasianthos (Lamiaceae) species complex 一种综合分类学方法解决了原stanthera lasianthos (Lamiaceae)物种复合体

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2021-07-08 DOI: 10.1071/SB20023

B. Conn, M. Henwood, Kirstin M. Proft, Judith A. Scott, Trevor C. Wilson, Rod S. Howes

{"title":"An integrative taxonomic approach resolves the Prostanthera lasianthos (Lamiaceae) species complex","authors":"B. Conn, M. Henwood, Kirstin M. Proft, Judith A. Scott, Trevor C. Wilson, Rod S. Howes","doi":"10.1071/SB20023","DOIUrl":"https://doi.org/10.1071/SB20023","url":null,"abstract":"Abstract. The diagnostic characteristics and distinctiveness of plant taxa have traditionally been based on a combination of geographic and morphological discontinuity. Implicit within these concepts is the notion that morphological variation is fixed and that gene flow among taxa is limited. However, species complexes that comprise a range of more-or-less continuous morphotypes often confound such assumptions and resist formal taxonomic treatment. A range of independent data sources, namely, nucleotide sequences, volatile oils and traditional morphology, were used in an integrative approach to resolve the taxonomic structure within the geographically widespread species complex of Prostanthera lasianthos Labill. We concluded that no dataset has primacy in defining segregate taxa, and that a combination of morphological and molecular data was required to determine the taxa within. As a result, we amended the description of P. lasianthos sens. strict. and recognise the following five new segregate species: Prostanthera largiflorens B.J.Conn & K.Proft, P. lasiangustata J.Carrick ex B.J.Conn & K.Proft, P. rupicola B.J.Conn & K.Proft, P. subalpina B.J.Conn & K.Proft, and P. williamsii B.J.Conn & K.Proft.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2021-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46244567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Fassettia, a new North American genus of family Ceratophyllaceae: evidence based on cladistic analyses of current molecular data of Ceratophyllum 北美金鱼藻科一新属Fassettia：基于金鱼藻现有分子数据的分支分析证据

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2021-07-06 DOI: 10.1071/SB20008

E. Mavrodiev, David M. Williams, M. Ebach, Anna E. Mavrodieva

引用次数: 2

Taxonomic revision of Riccia (Ricciaceae, Marchantiophyta) in the monsoon tropics of the Northern Territory, Australia 澳大利亚北领地热带季风区Riccia（Ricciaceae，Marchaniophyta）的分类学修订

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2021-06-25 DOI: 10.1071/SB20030

D. Cargill, K. Beckmann, R. Seppelt

引用次数: 6

Pandanus grayorum (Pandanaceae), a new species endemic to north-eastern Queensland (Australia) 澳洲昆士兰东北部特有的一新种——灰熊猫(熊猫科)

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2021-06-07 DOI: 10.1071/SB20033

M. Callmander, S. Buerki, F. Zich, A. Field, Timothy J. Gallaher

引用次数: 1

The Acrotylaceae (Gigartinales) revisited: molecular data indicate family-level differences in one of the most enigmatic red-algal families 重游肢端藻科(Gigartinales):分子数据表明最神秘的红藻家族之一的家族水平差异

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2021-05-11 DOI: 10.1071/SB20027

G. Kraft, G. Saunders

{"title":"The Acrotylaceae (Gigartinales) revisited: molecular data indicate family-level differences in one of the most enigmatic red-algal families","authors":"G. Kraft, G. Saunders","doi":"10.1071/SB20027","DOIUrl":"https://doi.org/10.1071/SB20027","url":null,"abstract":"Abstract. The Acrotylaceae (Gigartinales) has been an obscure, puzzling red-algal family composed of six genera (Acrotylus, Amphiplexia, Antrocentrum, Claviclonium, Hennedya and Ranavalona) that have virtually no habit and vegetative features remotely in common. Excepting Amphiplexia, with two species, all are monotypic and, save for Ranavalona, endemic to the southern half of Australia, Ranavalona being known only by a single collection from southern Madagascar. The most noteworthy unifying feature of the genera is the cystocarps, in which carposporangial filaments grow into a hollow cavity from inner hull layers. In almost all other respects, apart from zonate tetrasporangia, there are no anatomical features that appear uniformly throughout the complex. Molecular studies indicate that the family is composed of the Acrotylaceae sensu stricto (for Acrotylus, Hennedya and Ranavalona) and the newly proposed Clavicloniaceae (for Claviclonium, Amphiplexia and Antrocentrum). We recognise a new species of Acrotylus (A. cryptographicus) and transfer Rhabdonia mollis Harvey and R. hamata Zanardini to Antrocentrum. Closest affinities of both families lie with the Dicranemataceae, Mychodeaceae and Mychodeophyllaceae of the Gigartinales. The South African genus Reinboldia, which is based on a single 19th century collection, has been questionably included in the Acrotylaceae previously but should, in our opinion, be excluded.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46802626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Taxonomic revision of five species groups of ebracteate-erect Myosotis (Boraginaceae) endemic to New Zealand, based on morphology, and description of new subspecies 基于形态学和新亚种描述对新西兰特有的五个种群的分类修订

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2021-04-30 DOI: 10.1071/SB20028

Heidi M. Meudt

{"title":"Taxonomic revision of five species groups of ebracteate-erect Myosotis (Boraginaceae) endemic to New Zealand, based on morphology, and description of new subspecies","authors":"Heidi M. Meudt","doi":"10.1071/SB20028","DOIUrl":"https://doi.org/10.1071/SB20028","url":null,"abstract":"Abstract. Macro-morphological data were analysed to assess the distinctiveness and revise the taxonomy of 14 species, varieties and tag-named taxa in five informal species groups of ebracteate-erect forget-me-nots endemic to New Zealand. The following nine species are recognised: Myosotis albosericea Hook.f., M. brockiei L.B.Moore & M.J.A.Simpson, M. capitata Hook.f., M. concinna Cheeseman, M. goyenii Petrie, M. laeta Cheeseman, M. monroi Cheeseman, M. rakiura L.B.Moore, and M. traversii Hook.f. Three species have two allopatric subspecies each in the South Island, distinguished by few, minor morphological characters, including Myosotis brockiei subsp. brockiei and M. brockiei subsp. dysis Courtney & Meudt subsp. nov., M. goyenii subsp. goyenii and M. goyenii subsp. infima Meudt & Heenan, and M. traversii subsp. cantabrica (L.B.Moore) Meudt comb. et stat. nov. and M. traversii subsp. traversii. Myosotis × cinerascens Petrie is hypothesised to be a rare natural hybrid involving M. traversii subsp. cantabrica and another species, possibly M. colensoi. Several vegetative and floral characteristics can distinguish the study taxa from one another and from other ebracteate-erect species. The nine species plus M. × cinerascens are included in the taxonomic treatment, and the key also includes other recently revised ebracteate-erect species.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46251122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The impact of multiple molecular and morphological data sets on the phylogenetic reconstruction of subtribe Neurachninae (Poaceae: Panicoideae: Paniceae) 多个分子和形态学数据集对神经蜘蛛亚族系统发育重建的影响(禾科:蛇科:蛇科)

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2021-04-27 DOI: 10.1071/SB20015

E. Thompson, Melodina D. Fabillo

{"title":"The impact of multiple molecular and morphological data sets on the phylogenetic reconstruction of subtribe Neurachninae (Poaceae: Panicoideae: Paniceae)","authors":"E. Thompson, Melodina D. Fabillo","doi":"10.1071/SB20015","DOIUrl":"https://doi.org/10.1071/SB20015","url":null,"abstract":"Abstract. The taxonomy of Neurachninane has been unstable, with its member genera consisting of Ancistrachne, Calyptochloa, Cleistochloa, Dimorphochloa, Neurachne, Paraneurachne and Thyridolepis, changing since its original circumscription that comprised only the latter three genera. Recent studies on the phylogeny of Neurachninae have focused primarily on molecular data. We analysed the phylogeny of Neurachninae on the basis of molecular data from seven molecular loci (plastid markers: matK, ndhF, rbcL, rpl16, rpoC2 and trnLF, and ribosomal internal transcribed spacer, ITS) and morphological data from 104 morphological characters, including new taxonomically informative micromorphology of upper paleas. We devised an impact assessment scoring (IAS) protocol to aid selection of a tree for inferring the phylogeny of Neurachninae. Combining morphological and molecular data resulted in a well resolved phylogeny with the highest IAS value. Our findings support reinstatement of subtribe Neurachninae in its original sense, Neurachne muelleri and Dimorphochloa rigida. We show that Ancistrachne, Cleistochloa and Dimorphochloa are not monophyletic and Ancistrachne maidenii, Calyptochloa, Cleistochloa and Dimorphochloa form a new group, the cleistogamy group, united by having unique morphology associated with reproductive dimorphism.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48991383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Phylogeographic patterns of the Australian grass trees (Xanthorrhoea Asphodelaceae) shown using targeted amplicon sequencing 使用靶向扩增子测序显示的澳大利亚草树（黄腐病属沥青草科）的系统发育模式

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2021-03-17 DOI: 10.1071/SB20013

Todd G. B. McLay, P. Ladiges, S. Doyle, M. Bayly

{"title":"Phylogeographic patterns of the Australian grass trees (Xanthorrhoea Asphodelaceae) shown using targeted amplicon sequencing","authors":"Todd G. B. McLay, P. Ladiges, S. Doyle, M. Bayly","doi":"10.1071/SB20013","DOIUrl":"https://doi.org/10.1071/SB20013","url":null,"abstract":"Abstract. Despite the prevalence of sclerophyllous vegetation in Australia, there are few phylogeographic studies with continent-wide sampling addressing questions about the expansion of this vegetation post-aridification, and what physical barriers are associated with breaks in distribution or patterns of genetic structure. We used amplicon sequencing of plastid and nuclear DNA to investigate phylogeography of Xanthorrhoea. Despite extremely low genetic variation and widespread sharing of identical DNA sequence among multiple species and across significant geographic distance, haplotype analyses showed phylogeographic structure. Network analysis of six plastid loci and 137 samples identified 54 haplotypes (two common, 35 unique to single samples) in three geographic groups, south west and central Australia, northern–eastern Australia, and southern–eastern Australia, indicating restricted gene flow among regions. A nrDNA haplotype network of 152 samples showed less variation, with one haplotype being widespread, found in all three plastid geographic groups and 70% of species. nrDNA indicated four groups in a pattern, suggestive of at least two east–west divergences. A geographic area of a high haplotype diversity and divergence was identified in southern New South Wales, near the Southern Transition Zone. Our results showed the value of targeted amplicon sequencing and using multiple samples per species to identify both broad-scale and fine-scale biogeographic patterns.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2021-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42635160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

A taxonomic revision of the Australasian genera Dracophyllum and Richea (Richeeae: Styphelioideae: Ericaceae) 澳大拉西亚Dracophyllum属和Richea属的分类学修订（Richeeeae:Styphelioideeae:Ericaceae）

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2021-01-04 DOI: 10.1071/sb19049

S. Venter

引用次数: 2

Taxonomic revision of the Myosotis australis group (Boraginaceae) native to Australia, New Zealand and New Guinea 标题原产于澳大利亚、新西兰和新几内亚的澳洲肌索属(Boraginaceae)的分类订正

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2020-11-26 DOI: 10.1071/SB20014

Heidi M. Meudt, M. Thorsen, Jessica M. Prebble

{"title":"Taxonomic revision of the Myosotis australis group (Boraginaceae) native to Australia, New Zealand and New Guinea","authors":"Heidi M. Meudt, M. Thorsen, Jessica M. Prebble","doi":"10.1071/SB20014","DOIUrl":"https://doi.org/10.1071/SB20014","url":null,"abstract":"Abstract. The three main aims of this study were to circumscribe the Myosotis australis R.Br. group, determine the taxonomic utility of pollen characters, and delimit species and revise their taxonomy using macro-morphological and palynological data. The M. australis group is here recircumscribed to comprise two species, M. saxatilis Petrie (Marlborough and Otago, New Zealand) and M. australis. Myosotis australis is a widespread, morphologically variable species with two subspecies. M. australis subsp. australis comprises all Australian and most New Zealand specimens, including M. mooreana Lehnebach, M. lytteltonensis (Laing & A.Wall) de Lange, and several white- or yellow-flowered tag-named taxa from New Zealand, whereas M. australis subsp. saruwagedica (Schltr. ex Brand) Meudt, Thorsen & Prebble, comb. et stat. nov. is endemic to New Guinea. The M. australis group can be distinguished from all other ebracteate-erect Myosotis plants sampled to date, including the Australian endemic, M. exarrhena F.Muell., by a suite of characters, i.e. included anthers, calyx with both retrorse and hooked trichomes, rosette leaf trichomes retrorse abaxially and oblique to the midrib adaxially, and leaf length : width ratio of >2 : 1. Other characters can distinguish the group from M. discolor Pers., M. arvensis (L.) Hill, and M. umbrosa Meudt, Prebble & Thorsen respectively. Pollen characters were not useful for species delimitation within the M. australis group, but they can help distinguish several species outside it, including natural hybrids of M. australis and M. exarrhena in Australia. Myosotis australis, M. saxatilis and M. exarrhena are included in the taxonomic treatment, whereas introduced species M. discolor and M. arvensis are included in the key only.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2020-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43038394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4