Pub Date : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1289
Alan R. Franck, Colleen Werner
Five species of Lythrum have been considered native to Florida, USA, i.e., L. alatum, L. curtissii, L. flagellare, L. lanceolatum, and L. lineare. Lythrum alatum has been treated as an odd disjunct in Citrus Co., Florida, a species otherwise native to northern Alabama and northern Georgia and northward. We conducted fieldwork to study these alleged populations of L. alatum in Florida. What had been referred to as L. alatum is quite clearly a distinct species so far known from only three counties (Alachua, Citrus, and Hernando) in Florida. This species was first described as L. cordifolium Nieuwl., an illegitimate later homonym. The replacement name L. nieuwlandii is here published for this species endemic to the three counties in Florida. Lythrum alatum does not occur in Florida.
{"title":"Lythrum nieuwlandii (Lythraceae), a new name for L. cordifolium, nom. illeg., a rare species endemic to Florida, U.S.A.","authors":"Alan R. Franck, Colleen Werner","doi":"10.17348/jbrit.v17.i1.1289","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1289","url":null,"abstract":"Five species of Lythrum have been considered native to Florida, USA, i.e., L. alatum, L. curtissii, L. flagellare, L. lanceolatum, and L. lineare. Lythrum alatum has been treated as an odd disjunct in Citrus Co., Florida, a species otherwise native to northern Alabama and northern Georgia and northward. We conducted fieldwork to study these alleged populations of L. alatum in Florida. What had been referred to as L. alatum is quite clearly a distinct species so far known from only three counties (Alachua, Citrus, and Hernando) in Florida. This species was first described as L. cordifolium Nieuwl., an illegitimate later homonym. The replacement name L. nieuwlandii is here published for this species endemic to the three counties in Florida. Lythrum alatum does not occur in Florida.","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49666354","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 : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1291
H. Robinson, V. Funk, C. Kelloff, Raymund Chan
The morphologically diverse and globally distributed tribe Vernonieae (Compositae) has had a long taxonomic history whereby the majority of its taxa ended up being put into its “core” genus, Vernonia Schreb. Recent phylogenetic studies using DNA sequence data are only now beginning to tease apart this complicated “evil tribe” and provide a better understanding of the underlying morphological relationships within. With strong support from a recent molecular phylogenetic study of the Vernonieae across its entire geographical range, ten Mexican species of Vernonia and Vernonanthura are examined in this paper and placed in a new genus, Vickianthus.
{"title":"Vickianthus, a new genus of the Vernonieae (Compositae) from Mexico","authors":"H. Robinson, V. Funk, C. Kelloff, Raymund Chan","doi":"10.17348/jbrit.v17.i1.1291","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1291","url":null,"abstract":"The morphologically diverse and globally distributed tribe Vernonieae (Compositae) has had a long taxonomic history whereby the majority of its taxa ended up being put into its “core” genus, Vernonia Schreb. Recent phylogenetic studies using DNA sequence data are only now beginning to tease apart this complicated “evil tribe” and provide a better understanding of the underlying morphological relationships within. With strong support from a recent molecular phylogenetic study of the Vernonieae across its entire geographical range, ten Mexican species of Vernonia and Vernonanthura are examined in this paper and placed in a new genus, Vickianthus.","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44329131","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 : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1295
F. Almeda, Ricardo Pacifico
A meiotic chromosome number of n=9 is reported for Eliea articulata, a monospecific genus of Hypericaceae endemic to Madagascar. This first report for the genus is a new number for the small tribe Cratoxlyeae which includes only one other genus, Cratoxylum. A hypothetical scenario for the origin of n=9 is provided in the context of known chromosome numbers for Cratoxylum and the two other tribes in the Hypericaceae. Given that x=12 has been proposed as the basic chromosome number for the family with numbers of n=11 and n=10 also reported for related species and genera, n=9 appears to have arisen as a descending dysploid from these higher numbers. Field photos of Eliea articulata are provided along with a distribution map and camera lucida drawings of meiotic chromosome figures.
{"title":"Chromosomal observations on Eliea (Hypericaceae), a monospecific Madagascar endemic","authors":"F. Almeda, Ricardo Pacifico","doi":"10.17348/jbrit.v17.i1.1295","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1295","url":null,"abstract":"A meiotic chromosome number of n=9 is reported for Eliea articulata, a monospecific genus of Hypericaceae endemic to Madagascar. This first report for the genus is a new number for the small tribe Cratoxlyeae which includes only one other genus, Cratoxylum. A hypothetical scenario for the origin of n=9 is provided in the context of known chromosome numbers for Cratoxylum and the two other tribes in the Hypericaceae. Given that x=12 has been proposed as the basic chromosome number for the family with numbers of n=11 and n=10 also reported for related species and genera, n=9 appears to have arisen as a descending dysploid from these higher numbers. Field photos of Eliea articulata are provided along with a distribution map and camera lucida drawings of meiotic chromosome figures.","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41387426","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 : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1293
A. Weakley, John C. Kees, B. Sorrie, S. Ward, D. Poindexter, M. Brock, L. Estes, E. Bridges, S. Orzell, G. A. Levin, Kevan Schoonover McClelland, Ryan J Schmidt, Scott A. Namestnik
As part of ongoing work on the Flora of the Southeastern United States (Weakley & Southeastern Flora Team 2022a) and related projects, as well as for general floristic, conservation, and scientific work in eastern North America, it is essential to document taxonomic and nomenclatural changes and significant distribution records. Here we describe three new species (in Rhynchospora, Sabulina, and Solidago), describe a new section (in Trichostema), make new combinations to treat taxa at appropriate ranks in appropriate genera and with appropriate nomenclatural application based on types (in Lycopodioides, Moeroris, Morella, Nellica, Tamala, and Trichostema), and propose the lumping of two species, resulting in a change in name and nativity status (in Sisyrinchium). These new combinations (rank changes, or generic transfers to apply newly accepted generic concepts to taxa that do not have corresponding available names at the appropriate rank) are needed to accurately reflect current taxonomic understanding of the regional flora. In the course of doing so, we discuss and address various nomenclatural issues, including typifications, and clarify characters and identification of difficult groups (providing new keys) in the regional flora. We also report significant new distribution and naturalization records in many genera, in New Jersey (taxa in the genera Anthriscus, Calibrachoa, Chaenomeles, Dichanthelium, Diplotaxis, Ditrichia, Dysphania, Erigeron, Eucommia, Eupatorium, Lepidium, Malus, Montia, Nepeta, Persicaria, Picea, Psammophiliella, Pulmonaria, Quercus, Silphium, Verbascum, Verbena, Vicia), in the Coastal Plain of Alabama and Mississippi (taxa in the genera Baptisia, Clematis, Coreopsis, Galium, Matelea, Mirabilis, Poterium, Rhynchospora, Silphium, and Symphyotrichum), in southern Indiana (taxa in the genera Andropogon, Brunnichia, Echinacea, Landoltia, Montia, Persicaria, and Solidago), and in North Carolina, Virginia, and likely other states (Euphorbia).
作为正在进行的美国东南部植物区系工作（Weakley&Southeast Flora Team 2022a）和相关项目的一部分，以及北美东部的一般植物区系、保护和科学工作，记录分类学和命名变化以及重要的分布记录至关重要。在这里，我们描述了三个新物种（Rhynchospora、Sabulina和Solidago），描述了一个新的部分（Trichostema），进行了新的组合，以在适当的属中以适当的等级处理分类群，并根据类型进行了适当的命名应用（Lycopodioides、Moeroris、Morella、Nellica、Tamala和Trichostea），并提出了两个物种的集合，导致名字和出生身份的改变（在Sisyrinchium）。需要这些新的组合（等级变化，或将新接受的属性概念应用于没有适当等级的相应可用名称的分类群的属性转移）来准确反映当前对区域植物群的分类学理解。在这样做的过程中，我们讨论和解决了各种命名问题，包括类型化，并澄清了区域植物群中困难群体的特征和识别（提供了新的关键）。我们还在新泽西州的许多属中报告了重要的新分布和归化记录（分类群为Anthriscus属、Calibrachoa属、Chaenomeles属、Dichanthelium属、Diplotaxis属、Ditrichia属、Dyphania属、Erigeron属、杜仲属、Eupatorium属、Lepidium属、Malus属、Montia属、Nepeta属、Persicaria属、Picea属、Psammophiliella属、Pulmonaria属、Quercus属、Silphium属、Verbrascum属、马鞭草属、Vicia属），在阿拉巴马州和密西西比州的沿海平原（Baptisia属、铁线莲属、Coreopsis属、Galium属、Matelea属、Mirabilis属、Poterium属、Rhynchospora属、Silphium属和Sympyotrichum属），在印第安纳州南部（Andropogon属、Brunnichia属、Echinacea属、Landoltia属、Montia属、Persicaria属和Solidago属），以及在北卡罗来纳州、弗吉尼亚州和可能的其他州（大戟属）。
{"title":"Studies in the vascular flora of the southeastern United States. IX","authors":"A. Weakley, John C. Kees, B. Sorrie, S. Ward, D. Poindexter, M. Brock, L. Estes, E. Bridges, S. Orzell, G. A. Levin, Kevan Schoonover McClelland, Ryan J Schmidt, Scott A. Namestnik","doi":"10.17348/jbrit.v17.i1.1293","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1293","url":null,"abstract":"As part of ongoing work on the Flora of the Southeastern United States (Weakley & Southeastern Flora Team 2022a) and related projects, as well as for general floristic, conservation, and scientific work in eastern North America, it is essential to document taxonomic and nomenclatural changes and significant distribution records. Here we describe three new species (in Rhynchospora, Sabulina, and Solidago), describe a new section (in Trichostema), make new combinations to treat taxa at appropriate ranks in appropriate genera and with appropriate nomenclatural application based on types (in Lycopodioides, Moeroris, Morella, Nellica, Tamala, and Trichostema), and propose the lumping of two species, resulting in a change in name and nativity status (in Sisyrinchium). These new combinations (rank changes, or generic transfers to apply newly accepted generic concepts to taxa that do not have corresponding available names at the appropriate rank) are needed to accurately reflect current taxonomic understanding of the regional flora. In the course of doing so, we discuss and address various nomenclatural issues, including typifications, and clarify characters and identification of difficult groups (providing new keys) in the regional flora. We also report significant new distribution and naturalization records in many genera, in New Jersey (taxa in the genera Anthriscus, Calibrachoa, Chaenomeles, Dichanthelium, Diplotaxis, Ditrichia, Dysphania, Erigeron, Eucommia, Eupatorium, Lepidium, Malus, Montia, Nepeta, Persicaria, Picea, Psammophiliella, Pulmonaria, Quercus, Silphium, Verbascum, Verbena, Vicia), in the Coastal Plain of Alabama and Mississippi (taxa in the genera Baptisia, Clematis, Coreopsis, Galium, Matelea, Mirabilis, Poterium, Rhynchospora, Silphium, and Symphyotrichum), in southern Indiana (taxa in the genera Andropogon, Brunnichia, Echinacea, Landoltia, Montia, Persicaria, and Solidago), and in North Carolina, Virginia, and likely other states (Euphorbia).","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43601268","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 : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1297
Grace L. McCartha, Caitlyn M. Sims, Brendan J. Kosnik, J. Abbott, Mathew L. Jones, Ben E. Benton, Scott A Mangan, T. D. Marsico
Lower Mississippi River islands are part of the last remaining floodplain habitat of the river, and studying their biodiversity is important to understand the river ecosystem. We conducted a floristic survey of six Lower Mississippi River islands between river miles 668 and 526 in southern Arkansas and northern Mississippi. These islands contain a variety of habitats and span a range of sizes, from 106 to 697 vegetated hectares. We identified 491 taxa (485 species plus six infraspecific taxa) from 2,310 specimens collected from June 2020 to December 2021. These taxa are within 89 families and 282 genera, and 100 (20.6%) species are not native to the Mississippi River drainage basin. Nine taxa found on Arkansas islands are tracked by the Arkansas Natural Heritage Commission for conservation. Five taxa found in Mississippi are tracked by the Mississippi Natural Heritage Program. We found five taxa that had not previously been reported in Arkansas (Equisetum variegatum, Achyranthes japonica var. hachijoensis, Stellaria aquatica, Potentilla paradoxa, Cyperus diandrus) and seven previously unreported in Mississippi (Euploca convolvulacea, Sisymbrium loeselii, Chaiturus marrubiastrum, Mentha canadensis, Potentilla norvegica, P. paradoxa, Physalis mollis). Additionally, we collected 266 Arkansas county records, including 132 in Phillips, 64 in Desha, and 28 in Chicot counties, respectively, and 42 in Washington County, Mississippi. The high number of new encounters and tracked species found emphasizes the need for more botanical study on Lower Mississippi River islands. Of the 485 species in the flora, we found 110 species on all six islands (22.7%), 43 on five of the six islands, 47 on four islands, 75 on three islands, 72 on two islands, and 138 on only one island (28.5%). The number of unique species found on only one island illustrates how variable and dynamic these islands are in this riparian zone.
{"title":"Flora of six Lower Mississippi River islands (U.S.A.)","authors":"Grace L. McCartha, Caitlyn M. Sims, Brendan J. Kosnik, J. Abbott, Mathew L. Jones, Ben E. Benton, Scott A Mangan, T. D. Marsico","doi":"10.17348/jbrit.v17.i1.1297","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1297","url":null,"abstract":"Lower Mississippi River islands are part of the last remaining floodplain habitat of the river, and studying their biodiversity is important to understand the river ecosystem. We conducted a floristic survey of six Lower Mississippi River islands between river miles 668 and 526 in southern Arkansas and northern Mississippi. These islands contain a variety of habitats and span a range of sizes, from 106 to 697 vegetated hectares. We identified 491 taxa (485 species plus six infraspecific taxa) from 2,310 specimens collected from June 2020 to December 2021. These taxa are within 89 families and 282 genera, and 100 (20.6%) species are not native to the Mississippi River drainage basin. Nine taxa found on Arkansas islands are tracked by the Arkansas Natural Heritage Commission for conservation. Five taxa found in Mississippi are tracked by the Mississippi Natural Heritage Program. We found five taxa that had not previously been reported in Arkansas (Equisetum variegatum, Achyranthes japonica var. hachijoensis, Stellaria aquatica, Potentilla paradoxa, Cyperus diandrus) and seven previously unreported in Mississippi (Euploca convolvulacea, Sisymbrium loeselii, Chaiturus marrubiastrum, Mentha canadensis, Potentilla norvegica, P. paradoxa, Physalis mollis). Additionally, we collected 266 Arkansas county records, including 132 in Phillips, 64 in Desha, and 28 in Chicot counties, respectively, and 42 in Washington County, Mississippi. The high number of new encounters and tracked species found emphasizes the need for more botanical study on Lower Mississippi River islands. Of the 485 species in the flora, we found 110 species on all six islands (22.7%), 43 on five of the six islands, 47 on four islands, 75 on three islands, 72 on two islands, and 138 on only one island (28.5%). The number of unique species found on only one island illustrates how variable and dynamic these islands are in this riparian zone.","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45998338","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 : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1311
Brit Press
From the Publisher: Illustrated Genera of Rust Fungi of Brazil presents up-to-date information about the generaof rusts fungi known for Brazil. Included are 65 plates of detailed black and white photos representing 62genera. This number represents approximately one-half of all of the known genera of rust fungi in the world.Results are based on many large scale surveys and field collecting expeditions in Brazil and supplemented withherbarium records. The largest portion of this book is the descriptive flora of the 62 genera, i.e., descriptions,and taxonomic treatments of rust fungi genera, arranged alphabetically by genera and species. Sixty-one generaare treated as holomorphs and 13 as anamorph genera. The most important practical results of taxonomicresearch on these parasitic and pathogenic rust fungi are products such as complete descriptions and illustrationsof symptoms and signs, and other aids such as host indices and keys. These products help scientists andstudents to identify species of rusts. This book is aimed at students and professionals who are fascinated withrusts and their pathogenic fungi.
{"title":"Illustrated Genera of Rust Fungi of Brazil","authors":"Brit Press","doi":"10.17348/jbrit.v17.i1.1311","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1311","url":null,"abstract":"From the Publisher: Illustrated Genera of Rust Fungi of Brazil presents up-to-date information about the generaof rusts fungi known for Brazil. Included are 65 plates of detailed black and white photos representing 62genera. This number represents approximately one-half of all of the known genera of rust fungi in the world.Results are based on many large scale surveys and field collecting expeditions in Brazil and supplemented withherbarium records. The largest portion of this book is the descriptive flora of the 62 genera, i.e., descriptions,and taxonomic treatments of rust fungi genera, arranged alphabetically by genera and species. Sixty-one generaare treated as holomorphs and 13 as anamorph genera. The most important practical results of taxonomicresearch on these parasitic and pathogenic rust fungi are products such as complete descriptions and illustrationsof symptoms and signs, and other aids such as host indices and keys. These products help scientists andstudents to identify species of rusts. This book is aimed at students and professionals who are fascinated withrusts and their pathogenic fungi.","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45939561","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 : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1298
Paul Adanick
Veronica sublobata M.A. Fisch. has been verified as new to the state of Georgia from a recent collection. Diagnostic characters and difficulties in the determination of field collections and herbarium specimens are described and a key is presented with the closely related V. hederifolia.
{"title":"Veronica sublobata (Plantaginaceae), new to the flora of Georgia, U.S.A., with observations on identification","authors":"Paul Adanick","doi":"10.17348/jbrit.v17.i1.1298","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1298","url":null,"abstract":"Veronica sublobata M.A. Fisch. has been verified as new to the state of Georgia from a recent collection. Diagnostic characters and difficulties in the determination of field collections and herbarium specimens are described and a key is presented with the closely related V. hederifolia.","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46917368","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 : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1301
B. Middleton, C. Williams
Rare species threatened by climate and land-use change may harbor seeds in soil seed banks for periods of time even if adults have disappeared from the site. Soil samples were collected from sites with current Phyostegia correllii populations and from sites with former populations in Lady Bird Lake (a reservoir of the Colorado River, Austin, Texas. A seedling emergence study was conducted under greenhouse conditions, and the presence/absence of seedling emergence was recorded for two years. Seeds germinated from the seed banks of all current and former colonies tested. The presence of seed banks in a historical site (Blunn Creek) of Physostegia correllii suggests that management to encourage the germination of seeds might help to encourage the establishment of populations of this species. The re-establishment of disturbance fugitives might be facilitated by removing overhanging ground vegetation or imposing water management regimes that mimic natural floodplain dynamics.
{"title":"Seed banks of rare Physostegia correllii (Lamiaceae) in Lady Bird Lake, Austin, Texas, U.S.A.","authors":"B. Middleton, C. Williams","doi":"10.17348/jbrit.v17.i1.1301","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1301","url":null,"abstract":"Rare species threatened by climate and land-use change may harbor seeds in soil seed banks for periods of time even if adults have disappeared from the site. Soil samples were collected from sites with current Phyostegia correllii populations and from sites with former populations in Lady Bird Lake (a reservoir of the Colorado River, Austin, Texas. A seedling emergence study was conducted under greenhouse conditions, and the presence/absence of seedling emergence was recorded for two years. Seeds germinated from the seed banks of all current and former colonies tested. The presence of seed banks in a historical site (Blunn Creek) of Physostegia correllii suggests that management to encourage the germination of seeds might help to encourage the establishment of populations of this species. The re-establishment of disturbance fugitives might be facilitated by removing overhanging ground vegetation or imposing water management regimes that mimic natural floodplain dynamics.","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47923268","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 : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1315
Brit Press
About This Journal—The Annual Review of Ecology, Evolution, and Systematics, in publication since 1970, covers significant developments in the fields of ecology, evolutionary biology, and systematics, as they apply to all life on Earth. Essay reviews cover topics ranging from phylogeny, speciation, and molecular evolution through behavior and evolutionary physiology to population dynamics, ecosystems processes, and applications in invasion biology, conservation, and environmental management. 30 articles in Volume 52.
{"title":"Annual Review of Ecology, Evolution, and Systematics, Volume 52","authors":"Brit Press","doi":"10.17348/jbrit.v17.i1.1315","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1315","url":null,"abstract":"About This Journal—The Annual Review of Ecology, Evolution, and Systematics, in publication since 1970, covers significant developments in the fields of ecology, evolutionary biology, and systematics, as they apply to all life on Earth. Essay reviews cover topics ranging from phylogeny, speciation, and molecular evolution through behavior and evolutionary physiology to population dynamics, ecosystems processes, and applications in invasion biology, conservation, and environmental management. 30 articles in Volume 52.","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44304137","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 : 2023-07-21DOI: 10.17348/jbrit.v17.i1.1304
H. Keller
The evolutionary history of humans, known by the scientific name Homo sapiens (wise man), is the last living representative of a long fossil lineage of human-like populations. This book explores the wisdom of the current human populations, whose eight billion plus population growth and spread dominates present-day earth, and the possibility that these sheer numbers if left unchecked without the right choices, may sooner or later, destroy planet earth and perhaps go extinct. This book explores the questions posing human survival. Therefore, if you care about the survival of the most recent human species, you must read this book and consider the options that confront the future of our existence. Many other life forms that make up living components of ecosystems have gone extinct, and/or have merged with other extant species, so will human evolution follow the same time course?
{"title":"An Inconvenient Apocalpse, Environmental Collapse, Climate Crisis, and the Fate of Humanity","authors":"H. Keller","doi":"10.17348/jbrit.v17.i1.1304","DOIUrl":"https://doi.org/10.17348/jbrit.v17.i1.1304","url":null,"abstract":"The evolutionary history of humans, known by the scientific name Homo sapiens (wise man), is the last living representative of a long fossil lineage of human-like populations. This book explores the wisdom of the current human populations, whose eight billion plus population growth and spread dominates present-day earth, and the possibility that these sheer numbers if left unchecked without the right choices, may sooner or later, destroy planet earth and perhaps go extinct. This book explores the questions posing human survival. Therefore, if you care about the survival of the most recent human species, you must read this book and consider the options that confront the future of our existence. Many other life forms that make up living components of ecosystems have gone extinct, and/or have merged with other extant species, so will human evolution follow the same time course?","PeriodicalId":17307,"journal":{"name":"Journal of the Botanical Research Institute of Texas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41430347","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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