DOCSLIB.ORG

Plant Press, Vol. 18, No. 3

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Special Symposium Issue continues on page 12 Department of Botany & the U.S. National Herbarium The Plant Press New Series - Vol. 18 - No. 3 July-September 2015 Botany Profile Seed-Free and Loving It: Symposium Celebrates Pteridology By Gary A. Krupnick ern and lycophyte biology was tee Chair, NMNH) presented the 13th José of this plant group. the focus of the 13th Smithsonian Cuatrecasas Medal in Tropical Botany Moran also spoke about the differ- FBotanical Symposium, held 1–4 to Paulo Günter Windisch (see related ences between pteridophytes and seed June 2015 at the National Museum of story on page 12). This prestigious award plants in aspects of biogeography (ferns Natural History (NMNH) and United is presented annually to a scholar who comprise a higher percentage of the States Botanic Garden (USBG) in has contributed total vascular Washington, DC. Also marking the 12th significantly to flora on islands Symposium of the International Orga- advancing the compared to nization of Plant Biosystematists, and field of tropical continents), titled, “Next Generation Pteridology: An botany. Windisch, hybridization International Conference on Lycophyte a retired profes- and polyploidy & Fern Research,” the meeting featured sor from the Universidade Federal do Rio (ferns have higher rates), and anatomy a plenary session on 1 June, plus three Grande do Sul, was commended for his (some ferns have tree-like growth using additional days of focused scientific talks, extensive contributions to the systematics, root mantle or have internal reinforce- workshops, a poster session, a reception, biogeography, and evolution of neotro- ment by sclerenchyma instead of lateral a dinner, and a field trip. The conference pical pteridophytes. In his acceptance meristem). Moran also provided a brought together the world’s pteridolo- speech, Windisch expressed his appre- historical overview of pteridophytes in gists to celebrate the progress of fern and ciation and gratitude to the Smithsonian the Silurian to Early Devonian (at which lycophyte biology to date and to forecast Institution and the selection committee. He time leaves originated); in the Carbon- developments still on the horizon. said that receiving the medal rekindles his iferous (pteridophyte swamps from The Symposium began with open- inner spirit, and remarked that “translating that time were the precursor of today’s ing remarks by Warren Wagner (Chair nature into science is an art.” fossil fuel); at the Cretaceous-Tertiary of Botany, NMNH), Kirk Johnson (Sant Boundary (a spike in fern diversity can Director, NMNH), and Ari Novy (Execu- he first day of the Symposium be seen soon after the asteroid impact); tive Director, USBG). Eric Schuettpelz included a plenary session that was and in the Early Tertiary (warm weather (Curator of Ferns, NMNH) served as Topen to the general public. With produced thick carpets of Azolla in the convener. Noting that the last inter- 10 invited talks, the audience was treated Arctic Ocean leading to a sharp reduc- to an overview of fern and lycophyte national conference on lycophyte and tion in atomospheric CO2 reducing the fern research took place 11 years ago at evolution, genomics, physiology, ecology, greenhouse effect and lowering the the Royal Botanic Garden Edinburgh, horticulture, and conservation. The open- Earth’s temperature). Moran concluded Schuettpelz expressed excitement as ing keynote speaker was Robbin C. Moran his talk with a discussion of iridescence this year’s conference of 97 talks and 30 from the New York Botanical Garden, and in ferns, the diversity of sporangia, and posters, including the 10 invited plenary his talk, “An Overview of Ferns and Lyco- the explosive sporangial dehiscence of speakers, was to focus on discussing new phytes,” provided an exciting introduction the clubmoss Lycopodium clavatum. He and revitalized methods for pteridologi- into the world of pteridology. Starting explained how the spores of this plant, cal research. with the life cycle of pteridophytes, Moran which are highly flammable because of After the opening remarks, Laurence discussed the unique, independently living their high fat content, were used as a sporophyte and gametophyte generations Dorr (Curator and Cuatrecasas Commit- Continued on page16 Travel Walter Adey traveled to Maine (6/17 herbarium cases at the Society for the poster on shifting collections at the Soci- – 7/24) to complete annual field research Preservation of Natural History Collec- ety for the Preservation of Natural History in conjunction with the NOAA Marine tions conference. Collections conference. Sanctuary Program. Rusty Russell traveled to Gainesville, Alain Touwaide and Emanuela Robin Everly traveled to Decorah, Florida (5/18 – 5/22) to speak at the Soci- Appetiti traveled to Iowa City (4/23 – Iowa (6/15 – 6/20) to attend the 47th ety for the Preservation of Natural History 4/25) to attend the annual banquet of the Annual Meeting of the Council on Botani- Collections conference, representing University of Iowa’s History of Medicine cal and Horticultural Libraries (CBHL) at herbarium programs, digitization plans, Society; to Los Angeles and San Marino, Seed Savers Exchange. and the Field Book Project, and convening California (4/26 – 5/7) to meet with col- Vicki Funk traveled to Copenha- and moderating two sessions of computer leagues, present lectures and do research gen, Denmark (5/16 – 5/22) to conduct demonstrations. at the University of California Los research. Eric Schuettpelz traveled to Manhat- Angeles and at the Huntington Library and Gabriel Johnson traveled to India (4/2 tan, New York (5/5 – 5/6) to give a talk Botanic Gardens; and to Athens, Greece – 4/24) to visit the laboratory of Vinita in the 2015 lecture series of the Torrey (6/1 – 6/30) to do research at the National Gowda at the Indian Institute of Sci- Botanical Society. Library of Greece and to deliver classes ence Education and Research and to train Robert Soreng traveled to Turkey and lectures at local institutions. laboratory technicians in methods used to (4/17 – 5/23) to collect grasses for revision Elizabeth Zimmer traveled to Vienna, generate DNA sequence data. of Poa in Turkey and annotate specimens Austria (6/21 – 6/25) to speak at the Plant Sylvia Orli traveled to Gainesville, at Gazi University, Ankara (GAZI). Molecular Ecology and Evolution’s Inter- Florida (5/18 – 5/22) to attend the Society Meghann Toner traveled to Gaines- national Conference. for the Preservation of Natural History ville, Florida (5/18 – 5/22) to present a Collections conference. Melinda Peters traveled to Gaines- Visitors ville, Florida (5/18 – 5/22) to deliver a Ning Zhang, National Museum of Natural (4/14-4/19). talk on mercuric chloride contaminated History Buck Fellow; Vitaceae (1/7/13- 6/30/15). Jan Vandersmissen, Université de Liège, The Plant Press Belgium; History of botany (4/22). Eduardo Pasini, Universidade Federal New Series - Vol. 18 - No. 3 do Rio Grande do Sul, Brazil; Compositae Catherine Phillips, Huntington Botani- Chair of Botany (8/18/14-4/30/15). cal Garden; Cactaceae and Crassulaceae Warren L. Wagner (4/27). ([email protected]) Craig Costion, University of Adelaide, Australia; DNA barcoding (11/3/14 Tom Lovejoy and 14 students, George EDITORIAL STAFF -10/31/15). Mason University; Plant conservation and herbarium tour (5/4). Editor Yeni Rahayu, Bogor Agricultural Uni- Gary Krupnick versity, Indonesia; Sumatran Tetrastigma Peter Schafran, Old Dominion Univer- ([email protected]) (Vitaceae) (2/2-4/17). sity; Southeastern U.S. Isoetes (Isoeta- ceae) (5/5-7/31). Copy Editors Monica Carlsen, Missouri Botanical Gar- Robin Everly, Bernadette Gibbons, Bruce Stein, National Wildlife Federa- Rose Gulledge, and Elizabeth Jacobsen den; Araceae and Zingiberales (2/17/15- 2/16/17). tion; Centropogon (Campanulaceae) (5/7). News Contacts Bo Pan, Xishuangbanna Tropical Botani- Erin Walch, Smith College; Flora of San MaryAnn Apicelli, Rusty Russell, Alice Jacinto internship (5/11-6/26). Tangerini, and Elizabeth Zimmer cal Garden, China; Pueraria (Fabaceae) and related genera (2/20-4/29). Chang-Tzu Wang, Patuxent Research The Plant Press is a quarterly publication pro- vided free of charge. To receive notification of Kenia Velasco, Sociedad para el Estu- Refuge; Collections management (5/11- when new pdf issues are posted to the web, please 5/15). subscribe to the listserve by sending a message dio de los Recursos Bióticos de Oaxaca, to [email protected] containing only the Mexico; Traditional ecological knowledge following in the body of the text: SUBSCRIBE Christine Clancy, Australian and New PLANTPRESS-NEWS Firstname Lastname. of the Dixaza-speaking Community (4/4- Zealand Society for the History of Replace “Firstname Lastname” with your name. 7/31). Medicine; Mediterranean medicinal plants If you would like to be added to the hard-copy (5/14). mailing list, please contact Dr. Gary Krupnick at: Young Eun Chang, International School, Department of Botany, Smithsonian Institution, Belgium; Chinese medicinal plants and PO Box 37012, NMNH MRC-166, Washington, Mamiyil Sabu, University of Calicut DC 20013-7012, or by E-mail: krupnickg@ traditional medicine (4/6-4/17). Department of Botany, India; Zingiber- si.edu. José Nascimento, Jr., Campinas State aceae (5/15). Web site: http://botany.si.edu/ University, Brazil; Clusia (Clusiaceae) Emily Warschefsky, Florida International Page 2 Visiting Scientists Have a Sight for Sori Chair his year’s Smithsonian Botanical Symposium Generation Pteridology,” and during the event was unique in its focus on a particular taxo- itself, the pteridophyte herbarium saw nearly 50 nomic group (pteridophytes), as well as in its visitors (see list of visitors beginning on page 2). With T Many of these visitors spent several days conduct- duration (spanning an entire week). “Next Generation Pteridology” (see profile on the cover) focused entirely ing research in the collection, and the great influx on the biology of ferns and lycophytes. The first day of experts resulted in some extensive curation of A was filled with a broad spectrum of accessible presenta- our specimens.
Recommended publications
  • "National List of Vascular Plant Species That Occur in Wetlands: 1996 National Summary."

    "National List of Vascular Plant Species That Occur in Wetlands: 1996 National Summary."

    Intro 1996 National List of Vascular Plant Species That Occur in Wetlands The Fish and Wildlife Service has prepared a National List of Vascular Plant Species That Occur in Wetlands: 1996 National Summary (1996 National List). The 1996 National List is a draft revision of the National List of Plant Species That Occur in Wetlands: 1988 National Summary (Reed 1988) (1988 National List). The 1996 National List is provided to encourage additional public review and comments on the draft regional wetland indicator assignments. The 1996 National List reflects a significant amount of new information that has become available since 1988 on the wetland affinity of vascular plants. This new information has resulted from the extensive use of the 1988 National List in the field by individuals involved in wetland and other resource inventories, wetland identification and delineation, and wetland research. Interim Regional Interagency Review Panel (Regional Panel) changes in indicator status as well as additions and deletions to the 1988 National List were documented in Regional supplements. The National List was originally developed as an appendix to the Classification of Wetlands and Deepwater Habitats of the United States (Cowardin et al.1979) to aid in the consistent application of this classification system for wetlands in the field.. The 1996 National List also was developed to aid in determining the presence of hydrophytic vegetation in the Clean Water Act Section 404 wetland regulatory program and in the implementation of the swampbuster provisions of the Food Security Act. While not required by law or regulation, the Fish and Wildlife Service is making the 1996 National List available for review and comment.
  • Lyonia 7(1) 2004 - Conservation of Biological and Cultural Diversity in the Andes and the Amazon Basin - Flora and Vegetation

    Lyonia 7(1) 2004 - Conservation of Biological and Cultural Diversity in the Andes and the Amazon Basin - Flora and Vegetation

    Lyonia 7(1) 2004 - Conservation of Biological and Cultural Diversity in the Andes and the Amazon Basin - Flora and Vegetation Volume 7(1) December 2004 ISSN: 0888-9619 odd-right: 2 Introduction Scientists widely agree that species extinction has heavily accelerated in the last decades. The majority of the worlds species are found in tropical forests, covering a mere ten percent of the planets surface. A grave problem for the conservation of diversity is the still very fragmentary knowledge of the ecology of most species. The Andes and the Amazon Basin represent one of the most important Biodiversity-Hotspots on Earth. Attempts of sustainable management and conservation must integrate local communities and their traditional knowledge. Management decisions need to include the high importance of natural resources in providing building materials, food and medicines for rural as well as urbanized communities. The traditional use of forest resources, particularly of non-timber products like medicinal plants, has deep roots not only in indigenous communities, but is practiced in a wide section of society. The use of medicinal herbs is often an economically inevitable alternative to expensive western medicine. The base knowledge of this traditional use is passed from one generation to the next. Especially the medical use represents a highly dynamic, always evolving process, where new knowledge is constantly being obtained, and linked to traditional practices. An increased emphasis is being placed en possible economic benefits especially of the medicinal use of tropical forest products instead of pure timber harvesting, an approach particularly appealing to countries with difficult economic conditions. Most research efforts, due to lack of manpower, time end resources, focus only on either biodiversity assessments or ethnobotanical inventories, or try to implement management and use measures without having a sound scientific base to do so.
  • 17 Tribo Gnaphalieae (Cass.) Lecoq

    17 Tribo Gnaphalieae (Cass.) Lecoq

    17 Tribo Gnaphalieae (Cass.) Lecoq. & Juill. Leonardo Paz Deble SciELO Books / SciELO Livros / SciELO Libros DEBLE, L.P. Tribo Gnaphalieae (Cass.) Lecoq. & Juill. In: ROQUE, N. TELES, A.M., and NAKAJIMA, J.N., comp. A família Asteraceae no Brasil: classificação e diversidade [online]. Salvador: EDUFBA, 2017, pp. 131-137. ISBN: 978-85-232-1999-4. https://doi.org/10.7476/9788523219994.0019. All the contents of this work, except where otherwise noted, is licensed under a Creative Commons Attribution 4.0 International license. Todo o conteúdo deste trabalho, exceto quando houver ressalva, é publicado sob a licença Creative Commons Atribição 4.0. Todo el contenido de esta obra, excepto donde se indique lo contrario, está bajo licencia de la licencia Creative Commons Reconocimento 4.0. 17 TRIBO GNAPHALIEAE (CASS.) LECOQ. & JUILL. Leonardo Paz Deble A tribo Gnaphalieae é composta de 180-190 gêneros e cerca de 1.240 espécies, com distribuição quase cosmopolita, com maior diversidade na África do Sul, Ásia, Austrália e América do Sul (BAYER et al., 2007; DILLON; SAGASTEGUI, 1991; WARD et al., 2009). Para a América do Sul, Dillon e Sagastegui (1991) reconheceram 2 centros de diversidade: a Cordilheira dos Andes e o Sudeste do Brasil e regiões adjacentes. Tradicionalmente, Gnaphalieae foi subordinada à tribo Inuleae, sen- do reconhecida como um dos grupos de mais difícil identificação dentro da família, dadas a homogeneidade dos caracteres vegetativos e a escassa variação dos caracteres florais (CABRERA, 1961). Estudos recentes demons- traram que as Gnaphalieae encerram grupo monofilético posicionado na base da subfamília Asteroideae (ANDERBERG, 2009; ANDERBERG et al., 2005; FUNK et al., 2005).
  • Metrosideros Polymorpha Gaudich

    Metrosideros Polymorpha Gaudich

    Metrosideros polymorpha Gaudich. JAMES A. ALLEN Paul Smiths College, Paul Smiths, NY MYRTACEAE (MYRTLE FAMILY) Metrosideros collina (J.R. and G. Forst.) A. Gray subsp. polymorpha (Gaud.) Rock. (Little and Skolmen 1989). See also the extensive list of synonyms in Wagner and others (1990) Lehua, ‘ohi’a Metrosideros is a genus of about 50 species. With the excep- hybridization and genetic polymorphism is unknown (Wagner tion of one species found in South Africa, all grow in the and others 1990). Pacific from the Philippines, through Papua New Guinea, to The heartwood is reddish brown, heavy (specific gravity New Zealand and on high volcanic islands (Wagner and oth- of about 0.70), of fine and even texture, very hard, and strong. ers 1990). Five species occur in the Hawaiian Islands (Wag- Native Hawaiians used the wood extensively for construction, ner and others 1990). Metrosideros polymorpha is native to household implements, and carvings. Principal modern uses Hawaii, where it grows on all the main islands except Niihau include flooring, marine construction, pallets, fenceposts, and and Kahoolawe. It is the most abundant and widespread fuelwood. The wood’s limitations include excessive shrinkage M native tree in Hawaii (Adee and Conrad 1990) and grows in in drying, density, and the difficulty and expense of harvesting association with numerous species in both wet and relatively in low-volume stands (Adee and Conrad 1990, Little and Skol- dry forests. men 1989). Today, M. polymorpha is perhaps most highly val- Metrosideros polymorpha is a slow-growing, evergreen ued in Hawaii for uses in watershed protection, aesthetics, and species capable of reaching 24 to 30 m in height and about 1 m habitat for native birds, including several endangered species.
  • The Bean Bag

    The Bean Bag

    The Bean Bag A newsletter to promote communication among research scientists concerned with the systematics of the Leguminosae/Fabaceae Issue 62, December 2015 CONTENT Page Letter from the Editor ............................................................................................. 1 In Memory of Charles Robert (Bob) Gunn .............................................................. 2 Reports of 2015 Happenings ................................................................................... 3 A Look into 2016 ..................................................................................................... 5 Legume Shots of the Year ....................................................................................... 6 Legume Bibliography under the Spotlight .............................................................. 7 Publication News from the World of Legume Systematics .................................... 7 LETTER FROM THE EDITOR Dear Bean Bag Fellow This has been a year of many happenings in the legume community as you can appreciate in this issue; starting with organizational changes in the Bean Bag, continuing with sad news from the US where one of the most renowned legume fellows passed away later this year, moving to miscellaneous communications from all corners of the World, and concluding with the traditional list of legume bibliography. Indeed the Bean Bag has undergone some organizational changes. As the new editor, first of all, I would like to thank Dr. Lulu Rico and Dr. Gwilym Lewis very much for kindly
  • Vascular Plant Species Diversity of Mt. Etna

    Vascular Plant Species Diversity of Mt. Etna

    Vascular plant species diversity of Mt. Etna (Sicily): endemicity, insularity and spatial patterns along the altitudinal gradient of the highest active volcano in Europe Saverio Sciandrello*, Pietro Minissale* and Gianpietro Giusso del Galdo* Department of Biological, Geological and Environmental Sciences, University of Catania, Catania, Italy * These authors contributed equally to this work. ABSTRACT Background. Altitudinal variation in vascular plant richness and endemism is crucial for the conservation of biodiversity. Territories featured by a high species richness may have a low number of endemic species, but not necessarily in a coherent pattern. The main aim of our research is to perform an in-depth survey on the distribution patterns of vascular plant species richness and endemism along the elevation gradient of Mt. Etna, the highest active volcano in Europe. Methods. We used all the available data (literature, herbarium and seed collections), plus hundreds of original (G Giusso, P Minissale, S Sciandrello, pers. obs., 2010–2020) on the occurrence of the Etna plant species. Mt. Etna (highest peak at 3,328 mt a.s.l.) was divided into 33 belts 100 m wide and the species richness of each altitudinal range was calculated as the total number of species per interval. In order to identify areas with high plant conservation priority, 29 narrow endemic species (EE) were investigated through hot spot analysis using the ``Optimized Hot Spot Analysis'' tool available in the ESRI ArcGIS software package. Results. Overall against a floristic richness of about 1,055 taxa, 92 taxa are endemic, Submitted 7 November 2019 of which 29 taxa are exclusive (EE) of Mt.
  • Gnaphalieae-Asteraceae) of Mexico

    Gnaphalieae-Asteraceae) of Mexico

    Botanical Sciences 92 (4): 489-491, 2014 TAXONOMY AND FLORISTIC NEW COMBINATIONS IN PSEUDOGNAPHALIUM (GNAPHALIEAE-ASTERACEAE) OF MEXICO OSCAR HINOJOSA-ESPINOSA Y JOSÉ LUIS VILLASEÑOR1 Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México, México, D.F., México 1Corresponding author: [email protected] Abstract: In a broad sense, Gnaphalium L. is a heterogeneous and polyphyletic genus. Pseudognaphalium Kirp. is one of the many segregated genera from Gnaphalium which have been proposed to obtain subgroups that are better defi ned and presumably monophyletic. Although most Mexican species of Gnaphalium s.l. have been transferred to Pseudognaphalium, the combinations so far proposed do not include a few Mexican taxa that truly belong in Pseudognaphalium. In this paper, the differences between Gnaphalium s.s. and Pseudognaphalium are briefl y addressed, and the transfer of two Mexican species and three varieties from Gnaphalium to Pseudognaphalium are presented. Key Words: generic segregate, Gnaphalium, Mexican composites, taxonomy. Resumen: En sentido amplio, Gnaphalium L. es un género heterogéneo y polifi lético. Pseudognaphalium Kirp. es uno de varios géneros segregados, a partir de Gnaphalium, que se han propuesto para obtener subgrupos mejor defi nidos y presumiblemente monofi léticos. La mayoría de las especies mexicanas de Gnaphalium s.l. han sido transferidas al género Pseudognaphalium; sin embargo, las combinaciones propuestas hasta el momento no cubren algunos taxones mexicanos que pertenecen a Pseudogna- phalium. En este trabajo se explican brevemente las diferencias entre Gnaphalium s.s. y Pseudognaphalium, y se presentan las transferencias de dos especies y tres variedades mexicanas de Gnaphalium a Pseudognaphalium. Palabras clave: compuestas mexicanas, Gnaphalium, segregados genéricos, taxonomía.
  • Chapter 23: the Early Tracheophytes

    Chapter 23: the Early Tracheophytes

    Chapter 23 The Early Tracheophytes THE LYCOPHYTES Lycopodium Has a Homosporous Life Cycle Selaginella Has a Heterosporous Life Cycle Heterospory Allows for Greater Parental Investment Isoetes May Be the Only Living Member of the Lepidodendrid Group THE MONILOPHYTES Whisk Ferns Ophioglossalean Ferns Horsetails Marattialean Ferns True Ferns True Fern Sporophytes Typically Have Underground Stems Sexual Reproduction Usually Is Homosporous Fern Have a Variety of Alternative Means of Reproduction Ferns Have Ecological and Economic Importance SUMMARY PLANTS, PEOPLE, AND THE ENVIRONMENT: Sporophyte Prominence and Survival on Land PLANTS, PEOPLE, AND THE ENVIRONMENT: Coal, Smog, and Forest Decline THE OCCUPATION OF THE LAND PLANTS, PEOPLE, AND THE The First Tracheophytes Were ENVIRONMENT: Diversity Among the Ferns Rhyniophytes Tracheophytes Became Increasingly Better PLANTS, PEOPLE, AND THE Adapted to the Terrestrial Environment ENVIRONMENT: Fern Spores Relationships among Early Tracheophytes 1 KEY CONCEPTS 1. Tracheophytes, also called vascular plants, possess lignified water-conducting tissue (xylem). Approximately 14,000 species of tracheophytes reproduce by releasing spores and do not make seeds. These are sometimes called seedless vascular plants. Tracheophytes differ from bryophytes in possessing branched sporophytes that are dominant in the life cycle. These sporophytes are more tolerant of life on dry land than those of bryophytes because water movement is controlled by strongly lignified vascular tissue, stomata, and an extensive cuticle. The gametophytes, however still require a seasonally wet habitat, and water outside the plant is essential for the movement of sperm from antheridia to archegonia. 2. The rhyniophytes were the first tracheophytes. They consisted of dichotomously branching axes, lacking roots and leaves. They are all extinct.
  • Fruits and Seeds of Genera in the Subfamily Faboideae (Fabaceae)

    Fruits and Seeds of Genera in the Subfamily Faboideae (Fabaceae)

    Fruits and Seeds of United States Department of Genera in the Subfamily Agriculture Agricultural Faboideae (Fabaceae) Research Service Technical Bulletin Number 1890 Volume I December 2003 United States Department of Agriculture Fruits and Seeds of Agricultural Research Genera in the Subfamily Service Technical Bulletin Faboideae (Fabaceae) Number 1890 Volume I Joseph H. Kirkbride, Jr., Charles R. Gunn, and Anna L. Weitzman Fruits of A, Centrolobium paraense E.L.R. Tulasne. B, Laburnum anagyroides F.K. Medikus. C, Adesmia boronoides J.D. Hooker. D, Hippocrepis comosa, C. Linnaeus. E, Campylotropis macrocarpa (A.A. von Bunge) A. Rehder. F, Mucuna urens (C. Linnaeus) F.K. Medikus. G, Phaseolus polystachios (C. Linnaeus) N.L. Britton, E.E. Stern, & F. Poggenburg. H, Medicago orbicularis (C. Linnaeus) B. Bartalini. I, Riedeliella graciliflora H.A.T. Harms. J, Medicago arabica (C. Linnaeus) W. Hudson. Kirkbride is a research botanist, U.S. Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, BARC West Room 304, Building 011A, Beltsville, MD, 20705-2350 (email = [email protected]). Gunn is a botanist (retired) from Brevard, NC (email = [email protected]). Weitzman is a botanist with the Smithsonian Institution, Department of Botany, Washington, DC. Abstract Kirkbride, Joseph H., Jr., Charles R. Gunn, and Anna L radicle junction, Crotalarieae, cuticle, Cytiseae, Weitzman. 2003. Fruits and seeds of genera in the subfamily Dalbergieae, Daleeae, dehiscence, DELTA, Desmodieae, Faboideae (Fabaceae). U. S. Department of Agriculture, Dipteryxeae, distribution, embryo, embryonic axis, en- Technical Bulletin No. 1890, 1,212 pp. docarp, endosperm, epicarp, epicotyl, Euchresteae, Fabeae, fracture line, follicle, funiculus, Galegeae, Genisteae, Technical identification of fruits and seeds of the economi- gynophore, halo, Hedysareae, hilar groove, hilar groove cally important legume plant family (Fabaceae or lips, hilum, Hypocalypteae, hypocotyl, indehiscent, Leguminosae) is often required of U.S.
  • Tree and Tree-Like Species of Mexico: Asteraceae, Leguminosae, and Rubiaceae

    Tree and Tree-Like Species of Mexico: Asteraceae, Leguminosae, and Rubiaceae

    Revista Mexicana de Biodiversidad 84: 439-470, 2013 Revista Mexicana de Biodiversidad 84: 439-470, 2013 DOI: 10.7550/rmb.32013 DOI: 10.7550/rmb.32013439 Tree and tree-like species of Mexico: Asteraceae, Leguminosae, and Rubiaceae Especies arbóreas y arborescentes de México: Asteraceae, Leguminosae y Rubiaceae Martin Ricker , Héctor M. Hernández, Mario Sousa and Helga Ochoterena Herbario Nacional de México, Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México. Apartado postal 70- 233, 04510 México D. F., Mexico. [email protected] Abstract. Trees or tree-like plants are defined here broadly as perennial, self-supporting plants with a total height of at least 5 m (without ascending leaves or inflorescences), and with one or several erect stems with a diameter of at least 10 cm. We continue our compilation of an updated list of all native Mexican tree species with the dicotyledonous families Asteraceae (36 species, 39% endemic), Leguminosae with its 3 subfamilies (449 species, 41% endemic), and Rubiaceae (134 species, 24% endemic). The tallest tree species reach 20 m in the Asteraceae, 70 m in the Leguminosae, and also 70 m in the Rubiaceae. The species-richest genus is Lonchocarpus with 67 tree species in Mexico. Three legume genera are endemic to Mexico (Conzattia, Hesperothamnus, and Heteroflorum). The appendix lists all species, including their original publication, references of taxonomic revisions, existence of subspecies or varieties, maximum height in Mexico, and endemism status. Key words: biodiversity, flora, tree definition. Resumen. Las plantas arbóreas o arborescentes se definen aquí en un sentido amplio como plantas perennes que se pueden sostener por sí solas, con una altura total de al menos 5 m (sin considerar hojas o inflorescencias ascendentes) y con uno o varios tallos erectos de un diámetro de al menos 10 cm.
  • Phylogeny and Evolution of Achenial Trichomes In

    Phylogeny and Evolution of Achenial Trichomes In

    Luebert & al. • Achenial trichomes in the Lucilia-group (Asteraceae) TAXON 66 (5) • October 2017: 1184–1199 Phylogeny and evolution of achenial trichomes in the Lucilia-group (Asteraceae: Gnaphalieae) and their systematic significance Federico Luebert,1,2,3 Andrés Moreira-Muñoz,4 Katharina Wilke2 & Michael O. Dillon5 1 Freie Universität Berlin, Institut für Biologie, Botanik, Altensteinstraße 6, 14195 Berlin, Germany 2 Universität Bonn, Nees-Institut für Biodiversität der Pflanzen, Meckenheimer Allee 170, 53115 Bonn, Germany 3 Universidad de Chile, Departamento de Silvicultura y Conservación de la Naturaleza, Santiago, Chile 4 Pontificia Universidad Católica de Valparaíso, Instituto de Geografía, Avenida Brasil 2241, Valparaíso, Chile 5 The Field Museum, Integrative Research Center, 1400 South Lake Shore Drive, Chicago, Illinois 60605, U.S.A. Author for correspondence: Federico Luebert, [email protected] ORCID FL, http://orcid.org/0000­0003­2251­4056; MOD, http://orcid.org/0000­0002­7512­0766 DOI https://doi.org/10.12705/665.11 Abstract The Gnaphalieae (Asteraceae) are a cosmopolitan tribe with around 185 genera and 2000 species. The New World is one of the centers of diversity of the tribe with 24 genera and over 100 species, most of which form a clade called the Lucilia­group with 21 genera. However, the generic classification of the Lucilia­group has been controversial with no agreement on delimitation or circumscription of genera. Especially controversial has been the taxonomic value of achenial trichomes and molecular studies have shown equivocal results so far. The major aims of this paper are to provide a nearly complete phylogeny of the Lucilia­ group at generic level and to discuss the evolutionary trends and taxonomic significance of achenial trichome morphology.
  • Mitochondrial Genomes of the Early Land Plant Lineage

    Mitochondrial Genomes of the Early Land Plant Lineage

    Dong et al. BMC Genomics (2019) 20:953 https://doi.org/10.1186/s12864-019-6365-y RESEARCH ARTICLE Open Access Mitochondrial genomes of the early land plant lineage liverworts (Marchantiophyta): conserved genome structure, and ongoing low frequency recombination Shanshan Dong1,2, Chaoxian Zhao1,3, Shouzhou Zhang1, Li Zhang1, Hong Wu2, Huan Liu4, Ruiliang Zhu3, Yu Jia5, Bernard Goffinet6 and Yang Liu1,4* Abstract Background: In contrast to the highly labile mitochondrial (mt) genomes of vascular plants, the architecture and composition of mt genomes within the main lineages of bryophytes appear stable and invariant. The available mt genomes of 18 liverwort accessions representing nine genera and five orders are syntenous except for Gymnomitrion concinnatum whose genome is characterized by two rearrangements. Here, we expanded the number of assembled liverwort mt genomes to 47, broadening the sampling to 31 genera and 10 orders spanning much of the phylogenetic breadth of liverworts to further test whether the evolution of the liverwort mitogenome is overall static. Results: Liverwort mt genomes range in size from 147 Kb in Jungermanniales (clade B) to 185 Kb in Marchantiopsida, mainly due to the size variation of intergenic spacers and number of introns. All newly assembled liverwort mt genomes hold a conserved set of genes, but vary considerably in their intron content. The loss of introns in liverwort mt genomes might be explained by localized retroprocessing events. Liverwort mt genomes are strictly syntenous in genome structure with no structural variant detected in our newly assembled mt genomes. However, by screening the paired-end reads, we do find rare cases of recombination, which means multiple concurrent genome structures may exist in the vegetative tissues of liverworts.