Pub Date : 2021-09-16DOI: 10.33928/bib.2021.03.373
D. Iamonico
The typification of the Linnaean name Atriplex maritima is revisited according to the Art. 7.8 (Ex. 10) of ICN. A specimen deposited at BM (barcode BM001148306), which is part of the Dale’s collection, is designated as the lectotype superseding the previous proposed neotypification on BM000647540 (Clifford Herbarium). The correct name for this taxon remains A. laciniata L. with A. maritima accepted as heterotypic synonym.
{"title":"The typification of the Linnaean name Atriplex maritima (Chenopodiaceae) revisited","authors":"D. Iamonico","doi":"10.33928/bib.2021.03.373","DOIUrl":"https://doi.org/10.33928/bib.2021.03.373","url":null,"abstract":"The typification of the Linnaean name Atriplex maritima is revisited according to the Art. 7.8 (Ex. 10) of ICN. A specimen deposited at BM (barcode BM001148306), which is part of the Dale’s collection, is designated as the lectotype superseding the previous proposed neotypification on BM000647540 (Clifford Herbarium). The correct name for this taxon remains A. laciniata L. with A. maritima accepted as heterotypic synonym.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122233902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-16DOI: 10.33928/bib.2021.03.379
C. Stace
The various interpretations of Vulpia attenuata Parl. are outlined. The species is lectotypified on a Sicilian specimen of V. geniculata (L.) Link in FI.
{"title":"Typification of Vulpia attenuata (Poaceae)","authors":"C. Stace","doi":"10.33928/bib.2021.03.379","DOIUrl":"https://doi.org/10.33928/bib.2021.03.379","url":null,"abstract":"The various interpretations of Vulpia attenuata Parl. are outlined. The species is lectotypified on a Sicilian specimen of V. geniculata (L.) Link in FI.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124630121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-16DOI: 10.33928/bib.2021.03.324
A. Richards
Two new species are Taraxacum are described: T. dooguei A.J. Richards, a section Celtica species from Ireland related to T. pietii-oosterveldii, and T. dudmanianum A.J. Richards, a section Taraxacum species from Britain and Ireland previously incorrectly recorded as T. aberrans. Notes are given on their ecology and distributions.
描述了两个 Taraxacum 新种：dooguei A.J. Richards，一个来自爱尔兰的 Celtica 科物种，与 T. pietii-oosterveldii 相关；以及 T. dudmanianum A.J. Richards，一个来自英国和爱尔兰的 Taraxacum 科物种，之前被错误地记录为 T. aberrans。它们的生态和分布情况都有说明。
{"title":"Taraxacum dooguei and T. dudmanianum (Asteraceae) - two new species from Britain and Ireland","authors":"A. Richards","doi":"10.33928/bib.2021.03.324","DOIUrl":"https://doi.org/10.33928/bib.2021.03.324","url":null,"abstract":"Two new species are Taraxacum are described: T. dooguei A.J. Richards, a section Celtica species from Ireland related to T. pietii-oosterveldii, and T. dudmanianum A.J. Richards, a section Taraxacum species from Britain and Ireland previously incorrectly recorded as T. aberrans. Notes are given on their ecology and distributions.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"608 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127521696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-16DOI: 10.33928/bib.2021.03.362
M. Crawley
Vulpia myuros (L.) C.C. Gmel. has shown a dramatic increase in abundance as a weed of winter wheat since 2000, especially under regimes of no-till husbandry. A long-term experiment on disturbance timing at Silwood Park suggests that this increase is probably not due solely to no-till cultivation or to the plant’s well-known herbicide resistance, but rather to autumn cultivation coupled with warmer winter weather.
{"title":"The rise of Vulpia myuros (Poaceae) and the impact of cultivation-timing on plant community structure.","authors":"M. Crawley","doi":"10.33928/bib.2021.03.362","DOIUrl":"https://doi.org/10.33928/bib.2021.03.362","url":null,"abstract":"Vulpia myuros (L.) C.C. Gmel. has shown a dramatic increase in abundance as a weed of winter wheat since 2000, especially under regimes of no-till husbandry. A long-term experiment on disturbance timing at Silwood Park suggests that this increase is probably not due solely to no-till cultivation or to the plant’s well-known herbicide resistance, but rather to autumn cultivation coupled with warmer winter weather.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130673277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-16DOI: 10.33928/bib.2021.03.297
J. Crossley, C. Skilbeck
This article describes a study of Tripleurospermum maritimum (L.) W.D.J. Koch and T. inodorum (L.) Sch. Bip. (Asteraceae) in the Orkney Islands (v.c.111), the results of which suggest that intermediates between these taxa may be rather common, and that T. maritimum subsp. nigriceps and subsp. maritimum are both involved, the former more frequently. Obviously this results in a complex taxonomic situation, evidently not confined to Orkney in the far north. Key identifying characters of the taxa are systematically examined and guidance offered on determining hybrids using a population level approach. The taxonomic complexities of these northern populations are discussed, with regard in particular to the identity of T. inodorum occurring there and the place of T. maritimum subsp. nigrescens in the forms and subspecies of T. maritimum found in the north Atlantic region.
{"title":"Sea Mayweed Tripleurospermum maritimum and Scentless Mayweed T. inodorum (Asteraceae) intermediates in Orkney","authors":"J. Crossley, C. Skilbeck","doi":"10.33928/bib.2021.03.297","DOIUrl":"https://doi.org/10.33928/bib.2021.03.297","url":null,"abstract":"This article describes a study of Tripleurospermum maritimum (L.) W.D.J. Koch and T. inodorum (L.) Sch. Bip. (Asteraceae) in the Orkney Islands (v.c.111), the results of which suggest that intermediates between these taxa may be rather common, and that T. maritimum subsp. nigriceps and subsp. maritimum are both involved, the former more frequently. Obviously this results in a complex taxonomic situation, evidently not confined to Orkney in the far north. Key identifying characters of the taxa are systematically examined and guidance offered on determining hybrids using a population level approach. The taxonomic complexities of these northern populations are discussed, with regard in particular to the identity of T. inodorum occurring there and the place of T. maritimum subsp. nigrescens in the forms and subspecies of T. maritimum found in the north Atlantic region.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125179979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-26DOI: 10.33928/bib.2021.03.232
P. Smith, Patricia Lockford
Changes in habitat, floristics and vegetation between 2005 and 2019 were studied on 2.9 ha of sandy foreshore near Ainsdale-on-Sea, north Merseyside. Named the ‘New Green Beach’, the site initially supported saltmarsh vegetation but, within five years, a 30-35 m-wide embryo dune ridge had formed, eventually 3.5 m high, backed by a 300 x 30 m seasonally flooded, calcareous dune-slack. The latter was colonised by pioneer slack plants, after which it rapidly developed areas of tall-herb fen and Alnus/Salix carr, while saltmarsh plants declined. During succession, species recorded as ‘rare’ became fewer in number while a higher frequency of ‘abundant’ taxa was recorded. The number of vascular plants listed annually increased from one in 2005 to 154 in 2019, though the rate of addition of new plants fell after 2010. Overall, 246 taxa were identified during the study. Only 9% of these were non-native, 17% being regionally or nationally notable, including 16 Red-listed species. Very poor statistical fits were obtained to recognised UK National Vegetation Classification vegetation types. Analysis of Ellenberg Indicator Values for salinity, nitrogen, moisture and reaction showed that the plant community became progressively adapted to low salinity, lower fertility, drier conditions and a less basic soil. The findings are discussed in relation to comparable studies elsewhere in Britain and Northern Europe. The rate of succession on the New Green Beach seems remarkably high, while evidence of declining soil fertility over time was unexpected.
{"title":"Fifteen years of habitat, floristic and vegetation change on a pioneer sand-dune and slack system at Ainsdale, north Merseyside, UK","authors":"P. Smith, Patricia Lockford","doi":"10.33928/bib.2021.03.232","DOIUrl":"https://doi.org/10.33928/bib.2021.03.232","url":null,"abstract":"Changes in habitat, floristics and vegetation between 2005 and 2019 were studied on 2.9 ha of sandy foreshore near Ainsdale-on-Sea, north Merseyside. Named the ‘New Green Beach’, the site initially supported saltmarsh vegetation but, within five years, a 30-35 m-wide embryo dune ridge had formed, eventually 3.5 m high, backed by a 300 x 30 m seasonally flooded, calcareous dune-slack. The latter was colonised by pioneer slack plants, after which it rapidly developed areas of tall-herb fen and Alnus/Salix carr, while saltmarsh plants declined. During succession, species recorded as ‘rare’ became fewer in number while a higher frequency of ‘abundant’ taxa was recorded. The number of vascular plants listed annually increased from one in 2005 to 154 in 2019, though the rate of addition of new plants fell after 2010. Overall, 246 taxa were identified during the study. Only 9% of these were non-native, 17% being regionally or nationally notable, including 16 Red-listed species. Very poor statistical fits were obtained to recognised UK National Vegetation Classification vegetation types. Analysis of Ellenberg Indicator Values for salinity, nitrogen, moisture and reaction showed that the plant community became progressively adapted to low salinity, lower fertility, drier conditions and a less basic soil. The findings are discussed in relation to comparable studies elsewhere in Britain and Northern Europe. The rate of succession on the New Green Beach seems remarkably high, while evidence of declining soil fertility over time was unexpected.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129577536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-26DOI: 10.33928/bib.2021.03.227
J. Shaw
The history and origin of the race of Iris known as ‘Dutch Iris’ and the validity of the name Iris x hollandica are investigated. It is concluded that the name was validly published as Iris × hollandica H.R.Wehrh., Gartenstaud. 2: 231. 1931. Subsequently this name has been listed in IPNI.
{"title":"Iris x hollandica (Iridaceae): a valid name for Dutch Iris","authors":"J. Shaw","doi":"10.33928/bib.2021.03.227","DOIUrl":"https://doi.org/10.33928/bib.2021.03.227","url":null,"abstract":"The history and origin of the race of Iris known as ‘Dutch Iris’ and the validity of the name Iris x hollandica are investigated. It is concluded that the name was validly published as Iris × hollandica H.R.Wehrh., Gartenstaud. 2: 231. 1931. Subsequently this name has been listed in IPNI.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124226600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-26DOI: 10.33928/BIB.2021.03.196
Terry Swainbank, Keith Boseley
A drought in May 2020 curtailed snail damage to a population of Epipactis leptochila (Godfrey) Godfrey (Narrow-lipped Helleborine) such that in July there were 33 flowering plants in an area well known for this species at the Warburg nature reserve in Oxfordshire (v.c.23). Despite growing in a heavily-shaded area under beech, the typical habitat of E. leptochila, some of these plants were actually E. helleborine L. (Crantz) (Broad-leaved Helleborine) based on recognized distinguishing characteristics. We took morphological measurements (19 floral characters and 10 vegetative characters) for all the flowering plants present and were able to confirm by statistical analysis our initial species identifications. We were able also to discriminate between the species reasonably accurately using leaf characters alone, such as leaf colour, leaf length to width ratios and the angle of turn of the bottom three leaves. Using the outcomes from this analysis we were able to make predictions about the identity of most of the 82 non-flowering plants present. There were 4 plants that defied clear initial allocation to one or the other species and were suspected to be the hybrid E. x stephensonii Godfrey. Statistical analysis confirmed that these plants were indeed distinguishable from either parent, and most characters were intermediate to some degree between the two. The morphology of these putative hybrids is described pending molecular confirmation of their identity.
2020年5月的干旱减少了蜗牛对Epipactis leptochila(戈弗雷)戈弗雷(窄唇Helleborine)种群的损害，因此7月份在牛津郡Warburg自然保护区以该物种闻名的地区有33种开花植物(第23节)。尽管这些植物生长在山毛榉(leptochila的典型栖息地)树荫下，但根据公认的区分特征，其中一些植物实际上是E. helleborine L. (Crantz)(阔叶helleborine)。我们对所有的开花植物进行了形态学测量(19个花性状和10个营养性状)，并通过统计分析证实了我们的初步物种鉴定。我们还能够合理准确地区分物种之间仅使用叶片特征，如叶片颜色，叶片长宽比和底部三片叶片的转角。利用这一分析的结果，我们能够对82种非开花植物中的大多数进行身份预测。有4株植物没有明确的初始分配给一个或另一个物种，被怀疑是杂交的e.x stephensonii Godfrey。统计分析证实，这些植物确实与亲本中任何一方都有区别，而且大多数性状在某种程度上介于两者之间。这些假定的杂交种的形态被描述为等待分子确认他们的身份。
{"title":"Distinguishing between Epipactis leptochila (Narrow-lipped Helleborine), Epipactis helleborine (Broad-leaved Helleborine) and their putative hybrid, Epipactis x stephensonii at the Warburg reserve, Oxfordshire","authors":"Terry Swainbank, Keith Boseley","doi":"10.33928/BIB.2021.03.196","DOIUrl":"https://doi.org/10.33928/BIB.2021.03.196","url":null,"abstract":"A drought in May 2020 curtailed snail damage to a population of Epipactis leptochila (Godfrey) Godfrey (Narrow-lipped Helleborine) such that in July there were 33 flowering plants in an area well known for this species at the Warburg nature reserve in Oxfordshire (v.c.23). Despite growing in a heavily-shaded area under beech, the typical habitat of E. leptochila, some of these plants were actually E. helleborine L. (Crantz) (Broad-leaved Helleborine) based on recognized distinguishing characteristics. We took morphological measurements (19 floral characters and 10 vegetative characters) for all the flowering plants present and were able to confirm by statistical analysis our initial species identifications. We were able also to discriminate between the species reasonably accurately using leaf characters alone, such as leaf colour, leaf length to width ratios and the angle of turn of the bottom three leaves. Using the outcomes from this analysis we were able to make predictions about the identity of most of the 82 non-flowering plants present. There were 4 plants that defied clear initial allocation to one or the other species and were suspected to be the hybrid E. x stephensonii Godfrey. Statistical analysis confirmed that these plants were indeed distinguishable from either parent, and most characters were intermediate to some degree between the two. The morphology of these putative hybrids is described pending molecular confirmation of their identity.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114743848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-26DOI: 10.33928/bib.2021.03.183
T. Rich
The rare Scottish endemic Hieracium fulvocaesium Pugsley, orange-flowered hawkweed, is on the verge of extinction. Historic records indicate it was only known from the east banks of the River Naver, Bettyhill, Sutherland. Three plants were rediscovered in 2017. It is IUCN threat status ‘Critically Endangered’ and it requires urgent conservation work to conserve it in the wild.
{"title":"The rare Scottish endemic Hieracium fulvocaesium orange-flowered hawkweed (Asteraceae) is on the verge of extinction","authors":"T. Rich","doi":"10.33928/bib.2021.03.183","DOIUrl":"https://doi.org/10.33928/bib.2021.03.183","url":null,"abstract":" \u0000The rare Scottish endemic Hieracium fulvocaesium Pugsley, orange-flowered hawkweed, is on the verge of extinction. Historic records indicate it was only known from the east banks of the River Naver, Bettyhill, Sutherland. Three plants were rediscovered in 2017. It is IUCN threat status ‘Critically Endangered’ and it requires urgent conservation work to conserve it in the wild.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126380125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-26DOI: 10.33928/bib.2021.03.188
D. Welch
A distinctive bramble, whose identity has puzzled experts, is described as a new microspecies, Rubus longiflorus D. Welch. It is characterised by large showy white flowers, deeply grooved, glabrous, few-prickled stems, and leaves that have grey-felted undersides. It is considered intermediate between the Discolores series and Corylifolian section of brambles, and is tentatively assigned to the Rhamnifolii series. The new taxon occurs along an 80 km stretch of coastal lowlands in the Kincardineshire and Angus vice-counties.
一种独特的黑莓被描述为一种新的微种，名叫Rubus longiflorus D. Welch。它的特点是大而艳丽的白色花朵，深沟槽，无毛，茎上很少有刺，叶子底部有灰色毡。它被认为是介于Discolores系列和黑莓的Corylifolian部分之间，并暂定为Rhamnifolii系列。这个新的分类群出现在金卡迪纳斯郡和安格斯副郡80公里长的沿海低地上。
{"title":"A new species of Rubus L. (Rosaceae) from NE Scotland","authors":"D. Welch","doi":"10.33928/bib.2021.03.188","DOIUrl":"https://doi.org/10.33928/bib.2021.03.188","url":null,"abstract":"A distinctive bramble, whose identity has puzzled experts, is described as a new microspecies, Rubus longiflorus D. Welch. It is characterised by large showy white flowers, deeply grooved, glabrous, few-prickled stems, and leaves that have grey-felted undersides. It is considered intermediate between the Discolores series and Corylifolian section of brambles, and is tentatively assigned to the Rhamnifolii series. The new taxon occurs along an 80 km stretch of coastal lowlands in the Kincardineshire and Angus vice-counties.","PeriodicalId":254514,"journal":{"name":"British & Irish Botany","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122374501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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