Pub Date : 2023-12-19DOI: 10.1080/0028825x.2023.2289432
Aleluia Taise, Erik Krieger, Sarah J. Bury, Christopher E. Cornwall
Caulerpa is a widely distributed genus of chlorophytes (green macroalgae) which are important for their dietary, social and coastal ecosystem value. Ocean acidification (OA) threatens the future of...
{"title":"Physiological responses of Caulerpa spp. (with different dissolved inorganic carbon physiologies) to ocean acidification","authors":"Aleluia Taise, Erik Krieger, Sarah J. Bury, Christopher E. Cornwall","doi":"10.1080/0028825x.2023.2289432","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2289432","url":null,"abstract":"Caulerpa is a widely distributed genus of chlorophytes (green macroalgae) which are important for their dietary, social and coastal ecosystem value. Ocean acidification (OA) threatens the future of...","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"29 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138821492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-17DOI: 10.1080/0028825x.2023.2291453
Peter R. Johnston, Duckchul Park
Dingleyomyces is introduced as a new genus for the endemic New Zealand fungus, parasitic on the stromata of the large Ophiocordyceps species O. robertsii and O. hauturu, previously placed in Torrub...
Dingleyomyces 是新西兰特有真菌的一个新属,寄生于大型蛇尾草种 O. robertsii 和 O. hauturu 的基质上,以前被归入 Torrub...
{"title":"Dingleyomyces lloydii (Hypocreales, Polycephalomycetaceae), gen. nov., comb. nov.","authors":"Peter R. Johnston, Duckchul Park","doi":"10.1080/0028825x.2023.2291453","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2291453","url":null,"abstract":"Dingleyomyces is introduced as a new genus for the endemic New Zealand fungus, parasitic on the stromata of the large Ophiocordyceps species O. robertsii and O. hauturu, previously placed in Torrub...","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"31 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138715411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-13DOI: 10.1080/0028825x.2023.2289420
Carlo Chris S. Apurillo, Chayanard Phukhamsakda, Samhita Mukhopadhyay, Anujani Gunarathne, E. B. Gareth Jones
A novel fungus species, Nemania hydei, isolated from Avicennia marina in Pranburi District, Prachuap Khiri Khan, Thailand is described. The samples were collected from mangrove habitats, and the fu...
{"title":"Nemania hydei sp. nov. (Xylariaceae) from Avicennia marina in Central Thailand","authors":"Carlo Chris S. Apurillo, Chayanard Phukhamsakda, Samhita Mukhopadhyay, Anujani Gunarathne, E. B. Gareth Jones","doi":"10.1080/0028825x.2023.2289420","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2289420","url":null,"abstract":"A novel fungus species, Nemania hydei, isolated from Avicennia marina in Pranburi District, Prachuap Khiri Khan, Thailand is described. The samples were collected from mangrove habitats, and the fu...","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"69 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138685429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-29DOI: 10.1080/0028825x.2023.2276284
Luana Lume Yoshida, Irineu Bianchini Jr., Marcela Bianchessi da Cunha-Santino
Thousands of glitter particles are potentially daily released into aquatic ecosystems, but their effects on the ecological processes of aquatic species remain unknown. The metallic coating of glitt...
{"title":"Interference of glitter with the photosynthetic rates of a submerged macrophyte, Egeria densa","authors":"Luana Lume Yoshida, Irineu Bianchini Jr., Marcela Bianchessi da Cunha-Santino","doi":"10.1080/0028825x.2023.2276284","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2276284","url":null,"abstract":"Thousands of glitter particles are potentially daily released into aquatic ecosystems, but their effects on the ecological processes of aquatic species remain unknown. The metallic coating of glitt...","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"72 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138568593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-26DOI: 10.1080/0028825x.2023.2284205
Wendy Kentjens, David Glenny, Timothy J. Curran, Jon J. Sullivan
Bryophytes are important to terrestrial ecosystems, as they build soil and improve habitats for vascular plants. We investigated the influence of substrate pH, light, and cover of lichens and vascu...
{"title":"Bryophyte community composition is influenced by microhabitat and cover of vascular plants and lichens in New Zealand montane forest","authors":"Wendy Kentjens, David Glenny, Timothy J. Curran, Jon J. Sullivan","doi":"10.1080/0028825x.2023.2284205","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2284205","url":null,"abstract":"Bryophytes are important to terrestrial ecosystems, as they build soil and improve habitats for vascular plants. We investigated the influence of substrate pH, light, and cover of lichens and vascu...","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"61 11","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138513388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-22DOI: 10.1080/0028825x.2023.2284420
Milan C. Samarakoon
During the continuous investigation into inconspicuous xylarialean species in northern Thailand, two amphisphaeria-like taxa were found in samples collected between July and October 2022. Both taxa...
{"title":"Additions to the Xylariomycetidae (Sordariomycetes) Fungal Flora from Northern Thailand: Amphisphaeria chiangmaiensis sp. nov. and A. hydei sp. nov.","authors":"Milan C. Samarakoon","doi":"10.1080/0028825x.2023.2284420","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2284420","url":null,"abstract":"During the continuous investigation into inconspicuous xylarialean species in northern Thailand, two amphisphaeria-like taxa were found in samples collected between July and October 2022. Both taxa...","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138542896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-19DOI: 10.1080/0028825x.2023.2279297
Beverley R. Clarkson, Vanessa M. Cave, Scott Bartlam, Corinne H. Watts, Danny Thornburrow, Quentin Paynter
We compared biocontrol beetles and manual clearing of tradescantia in forest remnants invaded by tradescantia (Tradescantia fluminensis Vell.) on the agriculturally modified Hikurangi floodplain, n...
{"title":"Status of forest remnants invaded by tradescantia (Tradescantia fluminensis Vell.) following introduction of biocontrol beetles and manual clearance after three years","authors":"Beverley R. Clarkson, Vanessa M. Cave, Scott Bartlam, Corinne H. Watts, Danny Thornburrow, Quentin Paynter","doi":"10.1080/0028825x.2023.2279297","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2279297","url":null,"abstract":"We compared biocontrol beetles and manual clearing of tradescantia in forest remnants invaded by tradescantia (Tradescantia fluminensis Vell.) on the agriculturally modified Hikurangi floodplain, n...","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"28 11","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138513290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-13DOI: 10.1080/0028825x.2023.2276282
Peter B. Heenan
ABSTRACTTaxonomic names at the rank of variety are often poorly understood and may be misapplied as their taxonomic circumscriptions can be inadequate. These names often fall out of favour or are neglected until they are eventually abandoned, but uncertainty can remain as to their taxonomic or nomenclatural status. While many variety names persist in the New Zealand flora literature and databases, unlike naming a new taxon there are no formal rules or guidelines for not accepting a name and placing it in synonymy. The taxonomic recognition of four varietal names accepted in the Flora of New Zealand Volume 1 (Allan Citation1961) are assessed against the species to which they are assigned to determine if they warrant continued recognition. These varietal names are Brachyglottis bidwillii var. viridis (Kirk) B.Nord. (Asteraceae), Corokia buddleioides var. linearis Cheeseman (Argophyllaceae), Mida salicifolia var. myrtifolia (A.Cunn.) Allan (Nanodeaceae) and Teucridium parvifolium var. luxurians Cheeseman (Labiatae). For each of these taxa, and the species to which they were assigned, the key characters circumscribing them were analysed. Each of the four varieties are not significantly different from the species to which they have been assigned and are therefore treated as synonyms. While the means of the type species and variety are different, this is not surprising as typically the variety is named for plants that have particularly wide or narrow leaves that mostly occur in a particular part of the range of phenotypic variation. Scatter plots confirm the leaf variation is continuous with no discrete groups. Discriminant analyses demonstrate that specimens were correctly named in only a relatively low percentage of cases, suggesting the measurement ranges are insufficient for reliable recognition and indicative of overlap between the two taxa. Accepted names are listed and a full synonymy is provided, including where necessary the typification of names.KEYWORDS: Brachyglottis bidwillii var. viridisCorokia buddleioides var. linearisMida salicifolia var. myrtifoliaNew Zealand floranomenclaturesynonymtaxonomyTeucridium parvifolium var. luxuriansTeucrium AcknowledgementsI thank the Curators at Auckland War Memorial Museum (AK) and Museum of New Zealand Te Papa Tongarewa (WELT) for access to the collections; and Kerry Ford for comments on the draft manuscript. This research was supported by Strategic Science Investment Funding (SSIF) for Crown Research Institutes from the Ministry of Business, Innovation and Employment’s Science and Innovation Group.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Ministry of Business, Innovation and Employment.
摘要品种级的分类名称往往不为人所理解,而且由于其分类界限可能不充分而可能被误用。这些名称经常不受欢迎或被忽视,直到最终被放弃,但它们在分类学或命名学上的地位仍然不确定。虽然新西兰植物文献和数据库中保留了许多品种名称,但与命名新分类单元不同,没有正式的规则或指导方针来不接受名称并将其放置在同义词中。对《新西兰植物志》第一卷(Allan Citation1961)中收录的四个品种名称进行分类鉴定,并与所分配的物种进行比较,以确定它们是否值得继续鉴定。这些品种的名称是Brachyglottis bidwilli var. viridis (Kirk) B.Nord。(Asteraceae),花椒(cheeselaceae),水杨花(salicifolia),桃金娘(a.c nn.)蓝藻科和唇形科细叶唇藻。对每一个分类群及其所归属的物种,分析了限定它们的关键特征。这四个品种中的每一个都与它们所指定的物种没有显著差异,因此被视为同义词。虽然模式物种和变种的含义不同,但这并不奇怪,因为典型的变种是以那些叶子特别宽或特别窄的植物命名的,这些植物大多出现在表型变异范围的特定部分。散点图证实叶片变化是连续的,没有离散组。判别分析表明,标本被正确命名的比例相对较低,表明测量范围不足以进行可靠的识别,并表明两个分类群之间存在重叠。列出了公认的名称,并提供了完整的同义词,包括必要时名称的类型化。毕业论文关键词:布氏短门草(Brachyglottis bidwilliami var. viritis buleioides var. buleioides)水杨花(mida salicifolia var. myrtifolies)新西兰植物学名同义分类学(synonymtaxonomy)我感谢奥克兰战争纪念博物馆(AK)和新西兰帕帕汤加雷瓦博物馆(WELT)的馆长提供这些藏品;和Kerry Ford对草稿的评论。本研究得到了商业、创新和就业部科学与创新小组皇冠研究所战略科学投资基金(SSIF)的支持。披露声明作者未报告潜在的利益冲突。这项工作得到了商业、创新和就业部的支持。
{"title":"Taxonomic notes on the New Zealand flora: the status of four varietal names in <i>Brachyglottis</i> (Asteraceae), <i>Corokia</i> (Argophyllaceae), <i>Mida</i> (Nanodeaceae) and <i>Teucridium</i> (Labiatae)","authors":"Peter B. Heenan","doi":"10.1080/0028825x.2023.2276282","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2276282","url":null,"abstract":"ABSTRACTTaxonomic names at the rank of variety are often poorly understood and may be misapplied as their taxonomic circumscriptions can be inadequate. These names often fall out of favour or are neglected until they are eventually abandoned, but uncertainty can remain as to their taxonomic or nomenclatural status. While many variety names persist in the New Zealand flora literature and databases, unlike naming a new taxon there are no formal rules or guidelines for not accepting a name and placing it in synonymy. The taxonomic recognition of four varietal names accepted in the Flora of New Zealand Volume 1 (Allan Citation1961) are assessed against the species to which they are assigned to determine if they warrant continued recognition. These varietal names are Brachyglottis bidwillii var. viridis (Kirk) B.Nord. (Asteraceae), Corokia buddleioides var. linearis Cheeseman (Argophyllaceae), Mida salicifolia var. myrtifolia (A.Cunn.) Allan (Nanodeaceae) and Teucridium parvifolium var. luxurians Cheeseman (Labiatae). For each of these taxa, and the species to which they were assigned, the key characters circumscribing them were analysed. Each of the four varieties are not significantly different from the species to which they have been assigned and are therefore treated as synonyms. While the means of the type species and variety are different, this is not surprising as typically the variety is named for plants that have particularly wide or narrow leaves that mostly occur in a particular part of the range of phenotypic variation. Scatter plots confirm the leaf variation is continuous with no discrete groups. Discriminant analyses demonstrate that specimens were correctly named in only a relatively low percentage of cases, suggesting the measurement ranges are insufficient for reliable recognition and indicative of overlap between the two taxa. Accepted names are listed and a full synonymy is provided, including where necessary the typification of names.KEYWORDS: Brachyglottis bidwillii var. viridisCorokia buddleioides var. linearisMida salicifolia var. myrtifoliaNew Zealand floranomenclaturesynonymtaxonomyTeucridium parvifolium var. luxuriansTeucrium AcknowledgementsI thank the Curators at Auckland War Memorial Museum (AK) and Museum of New Zealand Te Papa Tongarewa (WELT) for access to the collections; and Kerry Ford for comments on the draft manuscript. This research was supported by Strategic Science Investment Funding (SSIF) for Crown Research Institutes from the Ministry of Business, Innovation and Employment’s Science and Innovation Group.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Ministry of Business, Innovation and Employment.","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"40 17","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136282054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-13DOI: 10.1080/0028825x.2023.2276913
Michael Bradshaw, Uwe Braun, Susumu Takamatsu, Márk Z. Németh, Diána Seress, Donald H. Pfister
{"title":"The <i>Erysiphe alphitoides</i> complex (powdery mildews) – unravelling the phylogeny and taxonomy of an intricate assemblage of species","authors":"Michael Bradshaw, Uwe Braun, Susumu Takamatsu, Márk Z. Németh, Diána Seress, Donald H. Pfister","doi":"10.1080/0028825x.2023.2276913","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2276913","url":null,"abstract":"","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136352030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-12DOI: 10.1080/0028825x.2023.2279296
Leon Perrie, Lara Shepherd
ABSTRACTAichryson laxum is documented as newly naturalised in Aotearoa New Zealand. Although tree of love is its colloquial name, it is a small, succulent herb in the Crassulaceae, and is indigenous to the Canary Islands. It has been cultivated in New Zealand for at least several decades. The species has recently been collected wild at multiple sites around Wellington, with collections also from Napier and near Ōtaki Forks, and an additional report of wild plants from Christchurch. Despite its small size, A. laxum can grow densely, adding to the weeds smothering surfaces and displacing indigenous species from habitats such as open, rocky banks. Within Wellington, A. laxum was first noticed to be growing wild in 2019, but it has now been found to be established at multiple sites throughout the city. Either it is spreading aggressively via its tiny, wind-dispersed seeds, or it has lain undetected for some time, even though it is a distinctive species among Wellington’s flora. Both scenarios are concerning, and A. laxum provides another example of the shortcomings of the nation’s current surveillance – recently described by the Parliamentary Commissioner for the Environment as largely passive and serendipitous – for emerging weeds newly naturalising from the tens of thousands of exotic plant species cultivated in New Zealand.KEYWORDS: BiosecurityCanary IslandsMacaronesiasucculentssurveillanceweedsWellington AcknowledgementsWe thank Ines Schönberger (CHR, Manaaki Whenua Landcare Research) and Ewen Cameron (AK, Auckland Museum) for checking the collections of their respective institutions; the users of iNaturalist, particularly Tim Park, Joe Dillon, and Chris Close, as well as Rebecca Turner for additional information about her iNaturalist observation of Aichryson laxum; Barry Sneddon for comments on a draft manuscript; and the reviewers for their constructive comments.Disclosure statementNo potential conflict of interest was reported by the author(s).
摘要:在新西兰奥特罗阿,记录了新归化的克氏松。虽然爱之树是它的口语化的名字,它是一种小的,多肉的草本植物在天门冬科,是加那利群岛的土著。它已经在新西兰种植了至少几十年。该物种最近在惠灵顿周围的多个地点被采集到,Napier和Ōtaki福克斯附近也有采集,另外还有一份来自基督城的野生植物的报告。尽管它的体积很小,但a.l axum可以密集生长,增加杂草,使表面窒息,并取代栖息地的本地物种,如开放的岩石河岸。在惠灵顿,A. laxum于2019年首次被发现在野生生长,但现在已经发现它在整个城市的多个地点都有分布。它要么是通过其微小的、随风传播的种子大举传播,要么是在惠灵顿的植物群中是一种独特的物种,但它已经潜伏了一段时间而未被发现。这两种情况都令人担忧,而且A. laxum提供了另一个例子,表明该国目前的监测存在缺陷——议会环境专员最近将其描述为很大程度上是被动和偶然的——对新西兰种植的数万种外来植物中新归化的杂草。我们感谢Ines Schönberger (CHR, Manaaki Whenua Landcare Research)和Ewen Cameron (AK, Auckland Museum)检查各自机构的藏品;iNaturalist的用户,特别是Tim Park, Joe Dillon和Chris Close,以及Rebecca Turner,为她的iNaturalist观察艾克森laxum提供更多信息;Barry Sneddon对草稿的评论;感谢审稿人的建设性意见。披露声明作者未报告潜在的利益冲突。
{"title":"Naturalisation of the tree of love <i>Aichryson laxum</i> (Crassulaceae) and its implications for biosecurity surveillance in New Zealand","authors":"Leon Perrie, Lara Shepherd","doi":"10.1080/0028825x.2023.2279296","DOIUrl":"https://doi.org/10.1080/0028825x.2023.2279296","url":null,"abstract":"ABSTRACTAichryson laxum is documented as newly naturalised in Aotearoa New Zealand. Although tree of love is its colloquial name, it is a small, succulent herb in the Crassulaceae, and is indigenous to the Canary Islands. It has been cultivated in New Zealand for at least several decades. The species has recently been collected wild at multiple sites around Wellington, with collections also from Napier and near Ōtaki Forks, and an additional report of wild plants from Christchurch. Despite its small size, A. laxum can grow densely, adding to the weeds smothering surfaces and displacing indigenous species from habitats such as open, rocky banks. Within Wellington, A. laxum was first noticed to be growing wild in 2019, but it has now been found to be established at multiple sites throughout the city. Either it is spreading aggressively via its tiny, wind-dispersed seeds, or it has lain undetected for some time, even though it is a distinctive species among Wellington’s flora. Both scenarios are concerning, and A. laxum provides another example of the shortcomings of the nation’s current surveillance – recently described by the Parliamentary Commissioner for the Environment as largely passive and serendipitous – for emerging weeds newly naturalising from the tens of thousands of exotic plant species cultivated in New Zealand.KEYWORDS: BiosecurityCanary IslandsMacaronesiasucculentssurveillanceweedsWellington AcknowledgementsWe thank Ines Schönberger (CHR, Manaaki Whenua Landcare Research) and Ewen Cameron (AK, Auckland Museum) for checking the collections of their respective institutions; the users of iNaturalist, particularly Tim Park, Joe Dillon, and Chris Close, as well as Rebecca Turner for additional information about her iNaturalist observation of Aichryson laxum; Barry Sneddon for comments on a draft manuscript; and the reviewers for their constructive comments.Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":19317,"journal":{"name":"New Zealand Journal of Botany","volume":"80 20","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135037225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}