Author: Keir Morse
Publisher: Keir Morse
ISBN:
Category : Science
Languages : en
Pages : 141
Book Description
The taxonomy of the genus Malacothamnus (Malvaceae) has been controversial for many years due to conflicting treatments and the many taxa of conservation concern not recognized in some of these treatments. Purported intergradation and hybridization are the primary justifications for not recognizing these taxa. Two recent morphological studies examining small subsets of Malacothamnus taxa debunked the purported ambiguities between the taxa analyzed and provided evidence for a new species. This indicated a morphological assessment of the full genus would be highly beneficial to identify and clarify both morphological groupings and character states within the genus prior to testing taxon hypotheses within a phylogenetic framework. This study follows the previous two by examining the remaining subsets of Malacothamnus taxa that have been combined and/or confused in the past. These subsets are analyzed with principle component analysis (PCA), pairwise permutational multivariate analysis of variance (PERMANOVA), and linear discriminant analysis (LDA) to answer (1) whether taxa relegated to synonymy by some authors are morphologically distinct or not, (2) whether there is morphological evidence to support purported intergradation between taxa, (3) whether previously defined morphological boundaries between taxa are justifiable or need refining, and (4)whether populations of hypothesized novel taxa are morphologically distinct from the taxathey have been included within. Twenty-nine previously named and nine unnamed morphological groupings were recovered in taxon subset analyses. These were then included in a global analysis of the genus followed by comparisons of morphological characters between all groupings. The 38 morphological groups recovered range in distinctness from clear taxa that are both morphologically and geographically distinct to intergrading forms needing further research to base taxonomic decisions upon. These 38 morphological groups are assessed as hypothetical lineages using phylogenetic analyses in Volume 2 of this monograph.
Malacothamnus: Volume 1
Author: Keir Morse
Publisher: Keir Morse
ISBN:
Category : Science
Languages : en
Pages : 141
Book Description
The taxonomy of the genus Malacothamnus (Malvaceae) has been controversial for many years due to conflicting treatments and the many taxa of conservation concern not recognized in some of these treatments. Purported intergradation and hybridization are the primary justifications for not recognizing these taxa. Two recent morphological studies examining small subsets of Malacothamnus taxa debunked the purported ambiguities between the taxa analyzed and provided evidence for a new species. This indicated a morphological assessment of the full genus would be highly beneficial to identify and clarify both morphological groupings and character states within the genus prior to testing taxon hypotheses within a phylogenetic framework. This study follows the previous two by examining the remaining subsets of Malacothamnus taxa that have been combined and/or confused in the past. These subsets are analyzed with principle component analysis (PCA), pairwise permutational multivariate analysis of variance (PERMANOVA), and linear discriminant analysis (LDA) to answer (1) whether taxa relegated to synonymy by some authors are morphologically distinct or not, (2) whether there is morphological evidence to support purported intergradation between taxa, (3) whether previously defined morphological boundaries between taxa are justifiable or need refining, and (4)whether populations of hypothesized novel taxa are morphologically distinct from the taxathey have been included within. Twenty-nine previously named and nine unnamed morphological groupings were recovered in taxon subset analyses. These were then included in a global analysis of the genus followed by comparisons of morphological characters between all groupings. The 38 morphological groups recovered range in distinctness from clear taxa that are both morphologically and geographically distinct to intergrading forms needing further research to base taxonomic decisions upon. These 38 morphological groups are assessed as hypothetical lineages using phylogenetic analyses in Volume 2 of this monograph.
Publisher: Keir Morse
ISBN:
Category : Science
Languages : en
Pages : 141
Book Description
The taxonomy of the genus Malacothamnus (Malvaceae) has been controversial for many years due to conflicting treatments and the many taxa of conservation concern not recognized in some of these treatments. Purported intergradation and hybridization are the primary justifications for not recognizing these taxa. Two recent morphological studies examining small subsets of Malacothamnus taxa debunked the purported ambiguities between the taxa analyzed and provided evidence for a new species. This indicated a morphological assessment of the full genus would be highly beneficial to identify and clarify both morphological groupings and character states within the genus prior to testing taxon hypotheses within a phylogenetic framework. This study follows the previous two by examining the remaining subsets of Malacothamnus taxa that have been combined and/or confused in the past. These subsets are analyzed with principle component analysis (PCA), pairwise permutational multivariate analysis of variance (PERMANOVA), and linear discriminant analysis (LDA) to answer (1) whether taxa relegated to synonymy by some authors are morphologically distinct or not, (2) whether there is morphological evidence to support purported intergradation between taxa, (3) whether previously defined morphological boundaries between taxa are justifiable or need refining, and (4)whether populations of hypothesized novel taxa are morphologically distinct from the taxathey have been included within. Twenty-nine previously named and nine unnamed morphological groupings were recovered in taxon subset analyses. These were then included in a global analysis of the genus followed by comparisons of morphological characters between all groupings. The 38 morphological groups recovered range in distinctness from clear taxa that are both morphologically and geographically distinct to intergrading forms needing further research to base taxonomic decisions upon. These 38 morphological groups are assessed as hypothetical lineages using phylogenetic analyses in Volume 2 of this monograph.
Malacothamnus: Volume 2
Author: Keir Morse
Publisher: Keir Morse
ISBN:
Category : Science
Languages : en
Pages : 101
Book Description
Past taxonomic treatments of the genus Malacothamnus (Malvaceae) are inconsistent with between 11 and 28 taxa recognized. Many taxa that are not recognized in recent treatments are narrowly endemic and of conservation concern, which makes resolving taxonomic questions in the genus a conservation priority. As a first step in resolving these questions, I used morphological analyses to assess specimens representing the full range of morphological variation in the genus throughout its entire geographic range, which is presented in Volume 1 of this monograph. These analyses resulted in 38 morphologically and geographically cohesive groups that have varying levels of distinctness. In Volume 2 of this monograph, 36 of the 38 morphological groups are further assessed in a phylogenetic framework using a restriction site-associated DNA sequencing (RAD-seq) dataset. Samples were analyzed using maximum likelihood analysis, quartets-based species tree analysis, neighbor-net analysis, and multidimensional scaling. Resulting clades generally correspond with morphological groups and relationships between clades correspond as much to geographic patterns as morphological patterns. Sixteen of the 38 morphological groups formed well supported clades, with three additional well supported clades containing multiple morphological groups. Lower support and inconsistency between some clades and morphological groups indicates possible gene flow or incomplete lineage sorting between morphological groups in some regions and identifies focal areas for future research. Taxonomic changes with a discussion of evidence for such changes are made in this volume. Based on the combination of morphologic, phylogenetic, and geographic evidence, I recognize 29 minimum rank taxa within 21 Malacothamnus species. Of these, 15 are currently listed as taxa of conservation concern, nine of which were not recognized in the recent Flora of North America treatment. Three new species are described: Malacothamnus astrotentaculatus, Malacothamnus eastwoodiae, and Malacothamnus discombobulatus. Taxonomic changes include two new combinations and two changes of rank resulting in the following new names: Malacothamnus arcuatus var. elmeri, Malacothamnus fremontii var. exfibulosus, Malacothamnus jonesii var. gracilis, and Malacothamnus jonesii var. niveus. A new treatment of Malacothamnus following the resulting taxonomy of Volume 2 is presented in Volume 3.
Publisher: Keir Morse
ISBN:
Category : Science
Languages : en
Pages : 101
Book Description
Past taxonomic treatments of the genus Malacothamnus (Malvaceae) are inconsistent with between 11 and 28 taxa recognized. Many taxa that are not recognized in recent treatments are narrowly endemic and of conservation concern, which makes resolving taxonomic questions in the genus a conservation priority. As a first step in resolving these questions, I used morphological analyses to assess specimens representing the full range of morphological variation in the genus throughout its entire geographic range, which is presented in Volume 1 of this monograph. These analyses resulted in 38 morphologically and geographically cohesive groups that have varying levels of distinctness. In Volume 2 of this monograph, 36 of the 38 morphological groups are further assessed in a phylogenetic framework using a restriction site-associated DNA sequencing (RAD-seq) dataset. Samples were analyzed using maximum likelihood analysis, quartets-based species tree analysis, neighbor-net analysis, and multidimensional scaling. Resulting clades generally correspond with morphological groups and relationships between clades correspond as much to geographic patterns as morphological patterns. Sixteen of the 38 morphological groups formed well supported clades, with three additional well supported clades containing multiple morphological groups. Lower support and inconsistency between some clades and morphological groups indicates possible gene flow or incomplete lineage sorting between morphological groups in some regions and identifies focal areas for future research. Taxonomic changes with a discussion of evidence for such changes are made in this volume. Based on the combination of morphologic, phylogenetic, and geographic evidence, I recognize 29 minimum rank taxa within 21 Malacothamnus species. Of these, 15 are currently listed as taxa of conservation concern, nine of which were not recognized in the recent Flora of North America treatment. Three new species are described: Malacothamnus astrotentaculatus, Malacothamnus eastwoodiae, and Malacothamnus discombobulatus. Taxonomic changes include two new combinations and two changes of rank resulting in the following new names: Malacothamnus arcuatus var. elmeri, Malacothamnus fremontii var. exfibulosus, Malacothamnus jonesii var. gracilis, and Malacothamnus jonesii var. niveus. A new treatment of Malacothamnus following the resulting taxonomy of Volume 2 is presented in Volume 3.
The Kew Record of Taxonomic Literature Relating to Vascular Plants
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 498
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 498
Book Description
Wildflowers of California
Author: California Native Plant Society
Publisher: Timber Press
ISBN: 1643263862
Category : Nature
Languages : en
Pages : 2160
Book Description
Experience the vibrant diversity of West Coast Wildflowers with this amazing, informative guide to more than 1,200 plant species. Wildflowers of California is a comprehensive field guide for anyone wishing to learn about the amazingly diverse wildflowers of the region. Organized by flower color and shape, and including a range map for each flower described, the guide is as user-friendly as it is informative. This must-have book is perfect for hikers, naturalists, and native plant enthusiasts. Describes and illustrates 1200 commonly encountered species Includes perennials, annuals, and shrubs, both native and nonnative Thousands of superb color photographs and range maps User-friendly organization by flower color and shape
Publisher: Timber Press
ISBN: 1643263862
Category : Nature
Languages : en
Pages : 2160
Book Description
Experience the vibrant diversity of West Coast Wildflowers with this amazing, informative guide to more than 1,200 plant species. Wildflowers of California is a comprehensive field guide for anyone wishing to learn about the amazingly diverse wildflowers of the region. Organized by flower color and shape, and including a range map for each flower described, the guide is as user-friendly as it is informative. This must-have book is perfect for hikers, naturalists, and native plant enthusiasts. Describes and illustrates 1200 commonly encountered species Includes perennials, annuals, and shrubs, both native and nonnative Thousands of superb color photographs and range maps User-friendly organization by flower color and shape
Malacothamnus: Volume 3
Author: Keir Morse
Publisher: Keir Morse
ISBN:
Category : Science
Languages : en
Pages : 182
Book Description
The genus Malacothamnus (subfamily Malvoideae, Malvaceae) is composed of fire-following shrubs primarily found in the California Floristic Province and includes many taxa of conservation concern. The genus includes 21 species and 29 minimum-ranked taxa. Here I present a revised treatment of the genus incorporating data from recent morphological and phylogenetic studies (Volumes 1 and 2). This treatment includes information on life history, a discussion and illustrations of morphological characters useful for identification, and relevant conservation information. A key to all taxa recognized in this revision is presented and followed by morphological descriptions, synonymy, common names, distribution maps, blooming period, conservation status, additional notes, and photographs.
Publisher: Keir Morse
ISBN:
Category : Science
Languages : en
Pages : 182
Book Description
The genus Malacothamnus (subfamily Malvoideae, Malvaceae) is composed of fire-following shrubs primarily found in the California Floristic Province and includes many taxa of conservation concern. The genus includes 21 species and 29 minimum-ranked taxa. Here I present a revised treatment of the genus incorporating data from recent morphological and phylogenetic studies (Volumes 1 and 2). This treatment includes information on life history, a discussion and illustrations of morphological characters useful for identification, and relevant conservation information. A key to all taxa recognized in this revision is presented and followed by morphological descriptions, synonymy, common names, distribution maps, blooming period, conservation status, additional notes, and photographs.
Bibliography of Agriculture with Subject Index
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 574
Book Description
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 574
Book Description
Checklist of the Vascular Plants of San Diego County
Author: Jon Paul Rebman
Publisher:
ISBN: 9780918969057
Category : Plant names, Popular
Languages : en
Pages : 100
Book Description
Publisher:
ISBN: 9780918969057
Category : Plant names, Popular
Languages : en
Pages : 100
Book Description
Plant Variation and Evolution
Author: David Briggs
Publisher: Cambridge University Press
ISBN: 1316546365
Category : Science
Languages : en
Pages : 595
Book Description
We are in the midst of a biological revolution. Molecular tools are now providing new means of critically testing hypotheses and models of microevolution in populations of wild, cultivated, weedy and feral plants. They are also offering the opportunity for significant progress in the investigation of long-term evolution of flowering plants, as part of molecular phylogenetic studies of the Tree of Life. This long-awaited fourth edition, fully revised by David Briggs, reflects new insights provided by molecular investigations and advances in computer science. Briggs considers the implications of these for our understanding of the evolution of flowering plants, as well as the potential for future advances. Numerous new sections on important topics such as the evolutionary impact of human activities, taxonomic challenges, gene flow and distribution, hybridisation, speciation and extinction, conservation and the molecular genetic basis of breeding systems will ensure that this remains a classic text for both undergraduate and graduate students in the field.
Publisher: Cambridge University Press
ISBN: 1316546365
Category : Science
Languages : en
Pages : 595
Book Description
We are in the midst of a biological revolution. Molecular tools are now providing new means of critically testing hypotheses and models of microevolution in populations of wild, cultivated, weedy and feral plants. They are also offering the opportunity for significant progress in the investigation of long-term evolution of flowering plants, as part of molecular phylogenetic studies of the Tree of Life. This long-awaited fourth edition, fully revised by David Briggs, reflects new insights provided by molecular investigations and advances in computer science. Briggs considers the implications of these for our understanding of the evolution of flowering plants, as well as the potential for future advances. Numerous new sections on important topics such as the evolutionary impact of human activities, taxonomic challenges, gene flow and distribution, hybridisation, speciation and extinction, conservation and the molecular genetic basis of breeding systems will ensure that this remains a classic text for both undergraduate and graduate students in the field.
Flowering Plants · Dicotyledons
Author: Klaus Kubitzki
Publisher: Springer Science & Business Media
ISBN: 3662072556
Category : Science
Languages : en
Pages : 425
Book Description
This encyclopedia contains a comprehensive treatment of the taxonomy of the families and genera of ferns and seed plants. The present volume, the fifth in this series, deals with three major groups of dicotyledons, the Capparales, Malvales, and Non-betalain Caryophyllales.
Publisher: Springer Science & Business Media
ISBN: 3662072556
Category : Science
Languages : en
Pages : 425
Book Description
This encyclopedia contains a comprehensive treatment of the taxonomy of the families and genera of ferns and seed plants. The present volume, the fifth in this series, deals with three major groups of dicotyledons, the Capparales, Malvales, and Non-betalain Caryophyllales.
Turning the Tide
Author: C. R. Veitch
Publisher: IUCN
ISBN: 2831706823
Category : Biodiversity conservation
Languages : en
Pages : 428
Book Description
Includes papers and abstracts dealing with eradication of invasive species in Alaska, Australia, Baker Island, California, Christmas Island, Enderby and Rose Islands, Galapagos Islands, Hawaii, Howland Island, Japan, Jarvis Island, Laysan Island, Lord Howe Island, Mauritius, Mexico, Nauru, New Zealand, Northern Ireland, Northern Mariana Islands, Saint-Paul Island, Seychelles, West Indies.
Publisher: IUCN
ISBN: 2831706823
Category : Biodiversity conservation
Languages : en
Pages : 428
Book Description
Includes papers and abstracts dealing with eradication of invasive species in Alaska, Australia, Baker Island, California, Christmas Island, Enderby and Rose Islands, Galapagos Islands, Hawaii, Howland Island, Japan, Jarvis Island, Laysan Island, Lord Howe Island, Mauritius, Mexico, Nauru, New Zealand, Northern Ireland, Northern Mariana Islands, Saint-Paul Island, Seychelles, West Indies.