Barbara Crandall-Stotler

Barbara Crandall-Stotler
Southern Illinois University Carbondale | SIU · Department of Plant Biology

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84
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Introduction

Publications

Publications (84)
Article
Liverworts (Marchantiophyta) are among the earliest diverging lineages of extant land plants. Among their unique features, most liverworts contain membrane-bound oil bodies, organelles that accumulate diverse secondary metabolites, especially terpenoids. In contrast to the rich information on liverwort terpenoid chemistry, little is known about the...
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The present publication is the first modern catalogue of the liverworts and hornworts of French Polynesia and accepts 161 species of liverworts and 5 species of hornworts. In addition, 40 species are doubtful records of French Polynesia and 45 species are excluded. The checklist is mainly based on a compilation of published records; a few unpublish...
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Premise: Phylogenetic trees of bryophytes provide important evolutionary context for land plants. However, published inferences of overall embryophyte relationships vary considerably. We performed phylogenomic analyses of bryophytes and relatives using both mitochondrial and plastid gene sets, and investigated bryophyte plastome evolution. Method...
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Green plants (Viridiplantae) include around 450,000–500,000 species1,2 of great diversity and have important roles in terrestrial and aquatic ecosystems. Here, as part of the One Thousand Plant Transcriptomes Initiative, we sequenced the vegetative transcriptomes of 1,124 species that span the diversity of plants in a broad sense (Archaeplastida),...
Article
Several populations of a partially submerged, robust, morphologically distinct Fossombronia were personally collected in central Mexico and several high elevation subpáramo communities in Venezuela. Comparative morphological studies of these populations with the type collections of F. peruviana, F. herzogii, F. ptychophylla, and F. australis, and a...
Article
Methyl (E)-cinnamate is a specialized metabolite that occurs in a variety of land plants. In flowering plants, it is synthesized by cinnamic acid methyltransferase (CAMT) that belongs to the SABATH family. While rarely reported in bryophytes, methyl (E)-cinnamate is produced by some liverworts of the Conocephalum conicum complex, including C. saleb...
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Bryophytes are close extant relatives of the ancestral land plant. As such, they have retained many innovations that had enabled the adaptation of early land plants to the terrestrial environment. One of such important innovations is the elaboration of an enormously diverse array of secondary metabolites. This article reviews current knowledge of t...
Article
A phylogenetic arrangement of the 130 liverwort genera, comprising 582 species, that occur in North America north of Mexico is followed by an alphabetical synopsis of genera, species, subspecies, and varieties currently recognized. The treatment of each taxon includes pertinent synonyms, excluded names, and explanatory comments regarding currently...
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A large, light green, mat-forming Fossombronia was discovered during explorations in the Río Anzu Reserve in eastern Ecuador in 2008. The plants were found only on scattered limestone boulders along the Río Anzu as it flowed through a narrow limestone gorge. A morphological study of specimens collected in 2008, using a combination of optical and sc...
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The vast abundance of terpene natural products in nature is due to enzymes known as terpene synthases (TPSs) that convert acyclic prenyl diphosphate precursors into a multitude of cyclic and acyclic carbon skeletons. Yet the evolution of TPSs is not well understood at higher levels of classification. Microbial TPSs from bacteria and fungi are only...
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The recently published combination Clevea nana (Lindenb.) Crand.-Stotl. & D.G.Long, which was intended to replace the name Clevea hyalina (Sommerf.) Lindb. on the basis of nomenclatural priority, is a later homonym of Clevea nana (Shimizu & S.Hatt.) Borovichev & Bakalin published in 2013 for a different taxon. Consequently, the name Clevea hyalina...
Article
The genus Aitchisoniella with a single species A. himalayensis (Marchantiopsida, Cleveaceae), previously considered endemic to the north-west Himalayas of India, is reported for the first time from Sichuan Province, China. The genus is distinctive amongst complex thalloid liverworts in lacking stalked carpocephala but having archegonia and sporophy...
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Molecular phylogenetic studies of complex thalloid liverworts have resolved relationships that require taxonomic and nomenclatural changes. Since Bucegia and Preissia are deeply nested within Marchantia, species formerly placed in these genera are transferred to Marchantia as Marchantia romanica, comb. nov. and Marchantia quadrata, respectively, an...
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A working checklist of accepted taxa worldwide is vital in achieving the goal of developing an online flora of all known plants by 2020 as part of the Global Strategy for Plant Conservation. We here present the first-ever worldwide checklist for liverworts (Marchantiophyta) and hornworts (Anthocerotophyta) that includes 7486 species in 398 genera r...
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The liverwort Haplomitrium gibbsiae is shown to regularly produce spores released in the form of permanent dyad pairs. Developmental studies indicate that the dyads are produced via a unique half-lobed configuration of the developing sporocyte. Many fossil cryptophytes of Siluro-Devonian age, which are clearly embryophytes based on their morphology...
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We present a complete generic-level phylogeny of the complex thalloid liverworts, a lineage that includes the model system Marchantia polymorpha. The complex thalloids are remarkable for their slow rate of molecular evolution and for being the only extant plant lineage to differentiate gas exchange tissues in the gametophyte generation. We estimate...
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Dates of validation of generic names initially published as names in subgenera or sections of Lejeunea(mainly by Spruce) in the period 1884–1893 are established. Consequences for the dates of validations of specific names are analysed. Names not validly published(both generic and specific names) in this period are also identified. A few species nam...
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The systematic placement of Frullania herzogii has been contentious since its description six decades ago. Over the years it has been interpreted as either a member of the genus Frullania or segregated into its own genus, Neohattoria, due to morphological similarities with both Frullania and Jubula. Here we provide molecular evidence that supports...
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Abstract— The suborder Jungermanniineae of the Jungermanniales is a major lineage of leafy liverworts, recognized in recent classifications to include 15 families. Gametophytes within the suborder are morphologically diverse, but commonly anisophyllous to distichous, usually with succubous, rarely transverse or incubuous, leaf insertions. Sporophyt...
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Unraveling the macroevolutionary history of bryophytes, which arose soon after the origin of land plants but exhibit substantially lower species richness than the more recently derived angiosperms, has been challenged by the scarce fossil record. Here we demonstrate that overall estimates of net species diversification are approximately half those...
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The monospecific Phycolepidoziaceae with the single neotropical species Phycolepidozia exigua is a highly specialized leafy liverwort without vegetative leaves. The extreme reduction of morphological and anatomical characters of Phycolepidozia has caused uncertainties as to the systematic position of the genus and family. In 2012, a second species...
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Ferns are well known for their shade-dwelling habits. Their ability to thrive under low-light conditions has been linked to the evolution of a novel chimeric photoreceptor-neochrome-that fuses red-sensing phytochrome and blue-sensing phototropin modules into a single gene, thereby optimizing phototropic responses. Despite being implicated in facili...
Chapter
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Drought provides a major stress in the lives of many plants, especially those with limited abilities to retain water for long periods of time for physiological processes. Mosses, liverworts, and hornworts are among plants that are poikilohydric, yet many species within these three lineages occupy drought-prone habitats and in fact can occur in some...
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This chapter provides a description of all plant families and genera that include putative fully mycoheterotrophic species, excluding initial and partial mycoheterotrophs. The overview covers a total of 17 families, 101 genera, and ca. 880 species. For each family and genus (except for Orchidaceae) a short morphological description is provided foll...
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A small, endemic leafy liverwort found in the coastal redwood forests of Santa Cruz and Monterey Counties of California is described as a new species of Mesoptychia (Lindb.) A. Evans, i.e., Mesoptychia polymorpha Stotler, Crand.-Stotl. and Bakalin, sp. nov. This new taxon is morphologically related to the suite of small-leafed species of the genus,...
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Söderström et al. (2013) outlined the current status of the family Lophocoleaceae. Following their concept several new combinations are needed, most of which are made here. While many of the taxa treated below need to be lectotypified, we are generally not doing that here. We only transfer taxa that have been shown to belong to the new genus in rec...
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Recent molecular phylogenetic studies on Lophocoleaceae have recovered some well-supported monophyletic lineages within Chiloscyphus s. lat. that merit recognition at the generic level. As a consequence, Chiloscyphus is herein circumscribed to include only Chiloscyphus subgen. Chiloscyphus, Chiloscyphus subgen. Connati is elevated to generic rank t...
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Systematic affinities of the rare, simple thalloid liverwort Phyllothallia E. A. Hodgs. have long been problematic. Hypothesized to comprise two disjunct species, P. nivicola E. A. Hodgs. from New Zealand and P. fuegiana R. M. Schust. from Tierra del Fuego, the genus was initially aligned, albeit remotely so, with either Fossombronia Raddi or Treub...
Article
Trends in the distribution patterns of 155 species of leafy hepatics over 10 distinct areas in the Luquillo Mountains of Puerto Rico were revealed by factor analysis. The three factors of the Q-mode (area × area) analysis contrasted (1) high-altitude with low-altitude habitats, (2) shaded, moist habitats with open, more exposed habitats of all elev...
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Noteroclada Taylor ex Hook. & Wilson has long been recognized as a unique leafy taxon having affinities to the north temperate, simple thalloid liverwort genus, Pellia Raddi. Although a suite of diagnostic characters clearly separate it from Fossombronia Raddi and other leafy, anacrogynous taxa, considerable confusion regarding its identity exists...
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Input from molecular phylogenetics in the past five years has substantially altered concepts of systematic relationships among liverworts. While these studies have confirmed the monophyly of phylum Marchantiophyta, they have demonstrated that many previously recognised ranks within the hierarchy are unnatural and in need of modification. Changes in...
Article
Nomenclatural problems in the liverwort Petalophyllum are addressed. Following a review of the original description of the genus, it is concluded that Petalophyllum Nees & Gottsche ex Lehm. or simply Petalophyllum Lehm. is the correct citation for the genus. The correct citations for the two species intially placed in the genus are P. preissii Lehm...
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Five chloroplast coding and non-coding regions, one mitochondrial gene and its associated intron, and part of one nuclear ribosomal gene were sequenced, giving a total included aligned length of 7,845 bp. Samples from six collections, representing five species of Jensenia from South America, Malaysia, and New Zealand, four collections belonging to...
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Nucleotide sequence data from three chloroplast genes (rbcL, rps4 and psbA), one nuclear gene (the ribosomal LSU) and one mitochondrial gene (nad5) were assembled for 173 species in 117 genera of liverworts, making this the largest molecular phylogeny of the group to date. Analyses of these data provide support for the monophyly of the liverworts,...
Article
The bryophyte flora of the Pacific Northwest includes three previously known species of tuber-producing hornworts that occupy seasonally dry habitats. Except for Phymatoceros bulbiculosus (Brot.) Stotler, W.T. Doyle & Crand.-Stotl., which was recently segregated from Phaeoceros Prosk. on the basis of a combination of morphological and molecular stu...
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Documentation is provided to support the correct author citation for ten upper rank names of liverworts that have hitherto been cited incorrectly. In addition, the use of parenthetical author citations is clarified.
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Bryophytes have gained a lot of publicity in the past 10–15 years, at least among scientists. While there have always been those who for inexplicable reasons have had a particular fondness for bryophytes, in academic circles these organisms were generally viewed as just “poor relatives” of the more flashy and exciting angiosperms. The bryophytes in...
Article
Many liverworts have been reported to deter the growth of pathogenic agents such as fungi and bacteria. It has been generally assumed that the chemicals liverworts produce in their oil bodies are responsible for this activity. However, most of these studies have used plants from nature, and only a few of them have isolated and identified the specif...
Article
A comprehensive, revisionary study of Moerckia, including detailed anatomical studies of type specimens, shows that the name Moerckia hibernica has been consistently misapplied to plants that are actually a form of M. flotoviana. The original specimens of M. hibernica display a very different suite of characters from those attributed to this specie...
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Phylogenetic relationships among the four major lineages of land plants (liverworts, mosses, hornworts, and vascular plants) remain vigorously contested; their resolution is essential to our understanding of the origin and early evolution of land plants. We analyzed three different complementary data sets: a multigene supermatrix, a genomic structu...
Article
The salient features of Xenothallus vulcanicola R. M. Schust. are illustrated, including details of gemma, conducting strand, and gynoecial anatomy. In addition, the sporophyte generation of Xenothallus R. M. Schust. is described for the first time, based on samples collected from a population of this taxon from Arthur's Pass, South Island, New Zea...
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BioOne (www.bioone.org) is an electronic aggregator of bioscience research content, and the online home to over 160 journals and books published by not-for-profit societies, associations, museums, institutions, and presses.
Article
Based upon our study of type specimens, we confirm that Anthoceros phymatodes M. Howe from California is synonymous with Phaeoceros bulbiculosus (Brot.) Prosk. from Portugal. Furthermore, this taxon forms the basis for the recently named, monotypic genus Phymatoceros Stotler, W. T. Doyle & Crand.-Stotl. Our observations of the morphology, anatomy,...
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Since the 1899 Schiffner publication describing Fossombronia japonica Schiffn., 16 taxa of Fossombronia Raddi have been reported from Eastern Asia and Oceania. Of these, seven were named as new taxa. Although several regional studies have been published, no study of the genus has ever been undertaken for the entire region. We have conducted a compr...
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The phylogenetic history of and evolutionary trends within the simple thalloid liverworts (Jungermanniopsida, subclass Metzgeriidae) are reconstructed in a combined analysis of molecular and morphological data. The molecular dataset comprises loci from all three genomes, including trnL-F, rps4, rbcL, atpβ and psbA from the chloroplast, SSU rRNA and...
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Proposals to conserve the names Fossombronia caespitiformis and Jungermannia angulosa with conserved types (Marchantiophyta: Fossombroniaceae)
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A hornwort classification that recognizes 11 genera, comprising a hierarchy of two classes, three orders, and four families is proposed. The updated checklist of these bryophytes for North America has been expanded from 11 species in three genera to 17 species in five genera. Application of the genus name Anthoceros in the traditional sense is clar...
Article
An eight locus analysis using sequences from the chloroplast rbcL, rps4, psbA, atpB and trnLUAA regions, the mitochondrial nad5 region and nuclear 3′ LSU and SSU regions for 64 liverworts, nine mosses and five hornworts resolves five well supported lineages within the Marchantiophyta. Treubia K. I. Goebel and Haplomitrium Nees form a clade that is...
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Lectotypes are explicitly designated for 43 taxa in the genus Fossombronia Raddi, with neotypes designated,for F. mauritanica Trab. and F pusilla var. beta capitata Nees. One name, F. pumila Dumort, is regarded as an orthographic error not based upon a specimen and thus, cannot be (typified. The entries are listed alphabetically, each with the corr...
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The simple thalloid liverwort genus Petalophyllum J. G. C. Lehmann is removed from the Fossombroniaceae and sequestered in the new family Petalophyllaceae along with Sewardiella S. R. Kashyap, a monotypic genus endemic to the Indian subcontinent. Unlike the Fossombroniaceae, the thallus in the Petalophyllaceae is never dissected, the archegonia are...
Article
The breeding system of Fossombronia foveolata and genetic differentiation in the F. foveolata species complex were studied using Random Amplified Polymorphic DNA (RAPD) markers. Polymorphism values for cloned siblings were not significantly different from those obtained from amplification of identical DNA samples. These results support the hypothes...
Article
Thirty-five populations conforming vegetatively to either Porella platyphylla (L.) Pfeiff. or P. platyphylloidea (Schwein.) Lindb. were analyzed using a combination of isozyme and morphometric methods to assess patterns of morphological and genetic differentiation within this difficult species complex. On the basis of the 11 loci that were consiste...
Article
Sporeling ontogeny of Monoclea gottschei Lindb. subsp. elongata Gradst. & Mues was determined using controlled germination experiments and a combination of optical and scanning electron microscopy. Germination is exosporic, without the formation of a germ tube, and early development is characterized by the formation of tiers of quadrants. While the...
Article
Projecting papillae ornament the abaxial leaf surfaces of many mosses, including those of the primitive, ectohydric taxon Andreaeobryum macrosporum Steere & B. Murr.. Such papillae presumably create a network of capillary spaces on the leaf surface proper, through which water can be effectively transported, while providing a water-repellent surface...
Article
Frullania tamarisci (L.) Dum. has been recognized to comprise four rather distinct, geographically separated subspecies, namely, F. tamarisci ssp. tamarisci, F. tamarisci ssp. moniliata (Reinw., Blume & Nees) Kamim., F. tamarisci ssp. asagrayana (Mont.) Hatt. and F. tamarisci ssp. nisquallensis (Sull.) Hatt. Despite some character overlap, these in...
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Three case studies are presented to prove that different ontogenetic patterns can produce similar morphologies. In Case I, it is shown that differences in leaf insertion and branch ontogeny between frullanioid and lejeuneoid lines are correlated with distinctive sequences of division in the apical derivatives. Case II demonstrates that the progress...
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Morphogenetic patterns involved in spore germination, indeterminant leafy shoot growth, including leaf and branch formation and histogenesis, gametangial development, embryogenesis, sporophyte maturation, and sporogenesis show that mosses, hepatics, and anthocerotes are fundamentally different from each other. Such patterns support the hypothesis t...
Article
The familial placement of Jubula has long been controversial because of this genus' possession of both frullanioid and lejeuneioid features. Assessment of significance of these traits, however, has not involved a comparative developmental study of all taxa in the genus. In this study, experimental and histological techniques have been used to study...
Article
This list includes the species, subspecies and varieties of Hepatics and Anthocerotes reported from the contiguous United States, Canada, Alaska and Greenland. A systematic arrangement of the 119 genera found in this area is followed by an alphabetical list of the taxa. This is appended by a catalog of synonyms and excluded names. Essential annotat...
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Eleven morphogenetic patterns of branch formation are presently recognized in the leafy Hepaticae. Five of these patterns-the athecal Frullania, Microlepidozia, Acromastigum, Radula, and Fontinalis branching types-result in branches that diverge from the main axis at 45-60° and lack collars, while six patterns-the gyrothecal Bryopteris, Lejeunea, A...