Australian Systematic Botany最新文献_第2页

Charophytes of Australia’s Northern Territory – II. Tribe Nitelleae 澳大利亚北领地的苔藓植物——Ⅱ。Nitelleae部落

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2023-08-18 DOI: 10.1071/SB22029

M. Casanova, Kenneth G. Karol

引用次数: 0

Leaf fossils show a 40-million-year history for the Australian tropical rainforest genus Megahertzia (Proteaceae) 叶子化石显示了澳大利亚热带雨林中巨藻属(变形科)4000万年的历史。

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2023-08-18 DOI: 10.1071/SB23005

R. Carpenter, A. Rozefelds

{"title":"Leaf fossils show a 40-million-year history for the Australian tropical rainforest genus Megahertzia (Proteaceae)","authors":"R. Carpenter, A. Rozefelds","doi":"10.1071/SB23005","DOIUrl":"https://doi.org/10.1071/SB23005","url":null,"abstract":"ABSTRACT Well-preserved leaf fossils from the Middle Eocene Anglesea site in Victoria are assigned to a new species of Megahertzia (M. paleoamplexicaulis R.J.Carp. & Rozefelds), a genus of Proteaceae now represented by a single species, M. amplexicaulis A.S.George & B.Hyland, in the Wet Tropics rainforests of Queensland. Megahertzia-like cuticular remains also occur in the Eocene Mount Hotham assemblage of Victoria, and pollen closely conforming to Megahertzia (i.e. Proteacidites latrobensis W.K.Harris) occurs widely in Cenozoic sediments of Australia and in New Zealand. All these records add to other fossil evidence that many species of Australian rainforest Proteaceae are the last vestiges of formerly much more widespread lineages. The fossil leaves are near-identical in architecture and cuticular features to lobed leaves of M. amplexicaulis, including that they have small teeth, stomata in well-defined areoles, and fine cuticular striations. Moreover, where preserved, the leaf fossils show amplexicaul bases, a unique (apomorphic) trait of the extant species. The apparent absence at Anglesea of simple (unlobed) leaves in Megahertzia and two other taxa of fossil Proteaceae is discussed; this leaf type could have evolved convergently in response to forest canopy heat increase as Australia drifted towards the Equator.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41355671","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

Using RADseq to resolve species boundaries in a morphologically complex group of yellow-flowered shrubs (Geleznowia, Rutaceae) 利用RADseq解析形态复杂的黄花灌木类群(黄花灌木科)的种界

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2023-08-03 DOI: 10.1071/SB23010

B. Anderson, R. M. Binks, M. Byrne, A. Crawford, K. Shepherd

{"title":"Using RADseq to resolve species boundaries in a morphologically complex group of yellow-flowered shrubs (Geleznowia, Rutaceae)","authors":"B. Anderson, R. M. Binks, M. Byrne, A. Crawford, K. Shepherd","doi":"10.1071/SB23010","DOIUrl":"https://doi.org/10.1071/SB23010","url":null,"abstract":"ABSTRACT The morphologically complex and charismatic genus Geleznowia (Rutaceae) is endemic to south-western Australia and faces existing and potential conservation issues associated with land clearing, climate change and commercial harvesting. Two species are currently recognised in the genus, but horticulturally recognised forms and phrase-named taxa reflect additional suspected species diversity. The genus exhibits complicated and subtle patterns of morphological variation that have historically inhibited delimitation of taxonomic entities and, as a result, precluded effective conservation assessments. Here we used ddRAD data from 25 populations across the range of Geleznowia to elucidate genomic diversity in the group in conjunction with morphological re-assessment so as to delimit species and revise the taxonomy. Our analyses consistently identified seven entities that maintain genomic distinctiveness even in sympatry with other entities, supporting the inference of reproductive barriers and lineage divergence. Morphological assessment of more than 300 specimens corroborated these seven taxa. Consequently, we recognise seven species of Geleznowia in Western Australia, retaining G. amabilis K.A.Sheph. & A.D.Crawford, recircumscribing G. verrucosa Turcz., reinstating G. calycina (J.Drumm. ex Harv.) Benth., and naming four new species as G. eximia K.A.Sheph. & A.D.Crawford, G. narcissoides K.A.Sheph. & A.D.Crawford, G. occulta K.A.Sheph. & A.D.Crawford, and G. uberiflora K.A.Sheph. & A.D.Crawford.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46140203","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: 1

Pittosporum (Pittosporaceae) in Malesia and Papuasia 马列西亚和巴布亚的海桐属

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2023-07-27 DOI: 10.1071/SB22007

L. Cayzer, T. Utteridge, G. Chandler

引用次数: 0

Nine new species of Australian Nicotiana (Solanaceae) 澳大利亚烟草属九新种（茄科）

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2023-07-07 DOI: 10.1071/SB23001

Mark W. Chase, M. Christenhusz, L. A. Cauz-Santos, Felipe Nollet, J. Bruhl, Damien D. Andrew, Ruth Palsson, R. W. Jobson, Guy M. Taseski, R. Samuel

{"title":"Nine new species of Australian Nicotiana (Solanaceae)","authors":"Mark W. Chase, M. Christenhusz, L. A. Cauz-Santos, Felipe Nollet, J. Bruhl, Damien D. Andrew, Ruth Palsson, R. W. Jobson, Guy M. Taseski, R. Samuel","doi":"10.1071/SB23001","DOIUrl":"https://doi.org/10.1071/SB23001","url":null,"abstract":"Abstract. Nine new species in Australian Nicotiana section Suaveolentes are described, including N. clarksonii M.W.Chase & Christenh., N. erytheia M.W.Chase & Christenh., N. latifolia M.W.Chase & Christenh., N. latzii M.W.Chase, R.W.Jobson & Christenh., N. gibbosa M.W.Chase, D.D.Andrew & J.J.Bruhl, N. olens M.W.Chase & Christenh., N. praecipitis M.W.Chase & K.Durham, N. karara M.W.Chase & Christenh. and N. bungonia M.W.Chase & Taseski. Some have been known from herbarium specimens for a long time, but their distinction from other species concepts was unsuspected until DNA studies showed their divergent nature. Others are known from one or only a few new localities. All are morphologically and genetically distinct from their close relatives. Increased sampling of populations in our molecular studies has led us to the conclusion that the widespread, recently described species N. insecticida is a species complex, comprising as many as six genetically distinct taxa, one of which includes material from the type locality of N. hesperis. Here, we describe a new name, N. erytheia, for all material we previously assigned to N. hesperis that is phylogenetically distinct from that of the type locality. To make the relationships of the new species clearer, we provide a tree produced by analysis of nuclear (RADseq) DNA data.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48742390","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

Charophytes of Australia’s Northern Territory – I. Tribe Chareae 澳大利亚北部地区的Charophytes - I. Tribe Chareae

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2023-03-30 DOI: 10.1071/SB22023

M. Casanova, Kenneth G. Karol

引用次数: 1

Areas of endemism and environmental heterogeneity: a case study in Mexican legumes 地方病区域和环境异质性：以墨西哥豆科植物为例

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2023-02-22 DOI: 10.1071/SB21037

Maribel Arenas-Navarro, T. Escalante, César Miguel-Talonia, A. Silva-Galicia, O. Téllez-Valdés

{"title":"Areas of endemism and environmental heterogeneity: a case study in Mexican legumes","authors":"Maribel Arenas-Navarro, T. Escalante, César Miguel-Talonia, A. Silva-Galicia, O. Téllez-Valdés","doi":"10.1071/SB21037","DOIUrl":"https://doi.org/10.1071/SB21037","url":null,"abstract":"Abstract. Fabaceae is a monophyletic family comprising more than 22 000 species worldwide. In Mexico, it is the second-most species rich family, inhabiting multiple ecosystems with a high diversity of life forms. Our aims were to (1) identify areas of endemism (AEs) by using endemicity analysis at different cell sizes (1°, 0.5° and 0.25°) for 488 Mexican legumes, (2) describe the climatic and topographic heterogeneity of AE, (3) determine whether there is a positive relationship between AEs and climatic and topographic heterogeneity and (4) examine the conservation status of legumes that defined the AEs. We found six general AEs, supported by 63 species, with endemicity index values ranging from 2.05 to 6.86. These general areas had zones where biogeographical provinces intersected and exhibited a higher environmental heterogeneity. Areas detected at 1° showed a positive relationship between endemicity index and environmental heterogeneity. Legume species currently lack legal protection in Mexico, 69% of the endemic species do not have an evaluation category according to the International Union for Conservation of Nature, and eight species are in some risk category. Future conservation efforts should focus on protecting endemism areas from accomplishing representative natural protected areas.","PeriodicalId":55416,"journal":{"name":"Australian Systematic Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43837506","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

A molecular phylogeny of Boronia (Rutaceae): placement of enigmatic taxa and a revised infrageneric classification 龙葵属(芸香科)的分子系统发育:谜分类群的定位和修订的次属分类

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2023-01-01 DOI: 10.1071/sb22019

M. Duretto, M. Heslewood, M. Bayly

引用次数: 1

A morphological and molecular study supports the recognition of Rhipilia psammophila sp. nov. and Rhipilia baculifera comb. nov. (Halimedaceae, Chlorophyta) from southern Australia 形态学和分子生物学的研究支持了沙皮根菌和杆状根菌梳子的识别。11 .产自澳大利亚南部的(海棠科，绿藻科)

3区生物学

Australian Systematic Botany Pub Date : 2023-01-01 DOI: 10.1071/sb23016

John M. Huisman, Heroen Verbruggen

引用次数: 0

Generic and infrageneric limits of Phebalium and its allies (Rutaceae: Zanthoxyloideae) 花椒属及其近缘属的属界和属外界(芸香科:花椒总科)

IF 1.6 3区生物学

Australian Systematic Botany Pub Date : 2023-01-01 DOI: 10.1071/sb22018

M. Duretto, M. Heslewood, M. Bayly

引用次数: 2