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Chromatid Abnormalities in Meiosis: a Brief Review and a Case Study in the Genus Agave (Asparagales, Asparagaceae)
Chapter 10 Chromatid Abnormalities in Meiosis: A Brief Review and a Case Study in the Genus Agave (Asparagales, Asparagaceae) Benjamín Rodríguez‐Garay Additional information is available at the end of the chapter http://dx.doi.org/10.5772/intechopen.68974 Abstract The genus Agave is distributed in the tropical and subtropical areas of the world and represents a large group of succulent plants, with about 200 taxa from 136 species, and its center of origin is probably limited to Mexico. It is divided into two subgenera: Littaea and Agave based on the architecture of the inflorescence; the subgenus Littaea has a spicate or racemose inflorescence, while plants of the subgenus Agave have a paniculate inflorescence with flowers in umbellate clusters on lateral branches. As the main conclusion of this study, a hypothesis rises from the described observations: frying pan‐shaped chromosomes are formed by sister chromatid exchanges and a premature kinetochore movement in prophase II, which are meiotic aberrations that exist in these phylogenetic distant species, Agave stricta and A. angustifolia since ancient times in their evolution, and this may be due to genes that are prone to act under diverse kinds of environmental stress. Keywords: tequila, mescal, chromatid cohesion, centromere, inversion heterorozygosity, kinetochore 1. Introduction The genus Agave is distributed in the tropical and subtropical areas of the world and repre‐ sents a large group of succulent plants, with about 200 taxa from 136 species, and its center of origin is probably limited to Mexico [1]. It is divided into two subgenera: Littaea and Agave based on the architecture of the inflorescence; the subgenus Littaea has a spicate or racemose © 2017 The Author(s). -
Plethora of Plants - Collections of the Botanical Garden, Faculty of Science, University of Zagreb (2): Glasshouse Succulents
NAT. CROAT. VOL. 27 No 2 407-420* ZAGREB December 31, 2018 professional paper/stručni članak – museum collections/muzejske zbirke DOI 10.20302/NC.2018.27.28 PLETHORA OF PLANTS - COLLECTIONS OF THE BOTANICAL GARDEN, FACULTY OF SCIENCE, UNIVERSITY OF ZAGREB (2): GLASSHOUSE SUCCULENTS Dubravka Sandev, Darko Mihelj & Sanja Kovačić Botanical Garden, Department of Biology, Faculty of Science, University of Zagreb, Marulićev trg 9a, HR-10000 Zagreb, Croatia (e-mail: [email protected]) Sandev, D., Mihelj, D. & Kovačić, S.: Plethora of plants – collections of the Botanical Garden, Faculty of Science, University of Zagreb (2): Glasshouse succulents. Nat. Croat. Vol. 27, No. 2, 407- 420*, 2018, Zagreb. In this paper, the plant lists of glasshouse succulents grown in the Botanical Garden from 1895 to 2017 are studied. Synonymy, nomenclature and origin of plant material were sorted. The lists of species grown in the last 122 years are constructed in such a way as to show that throughout that period at least 1423 taxa of succulent plants from 254 genera and 17 families inhabited the Garden’s cold glass- house collection. Key words: Zagreb Botanical Garden, Faculty of Science, historic plant collections, succulent col- lection Sandev, D., Mihelj, D. & Kovačić, S.: Obilje bilja – zbirke Botaničkoga vrta Prirodoslovno- matematičkog fakulteta Sveučilišta u Zagrebu (2): Stakleničke mesnatice. Nat. Croat. Vol. 27, No. 2, 407-420*, 2018, Zagreb. U ovom članku sastavljeni su popisi stakleničkih mesnatica uzgajanih u Botaničkom vrtu zagrebačkog Prirodoslovno-matematičkog fakulteta između 1895. i 2017. Uređena je sinonimka i no- menklatura te istraženo podrijetlo biljnog materijala. Rezultati pokazuju kako je tijekom 122 godine kroz zbirku mesnatica hladnog staklenika prošlo najmanje 1423 svojti iz 254 rodova i 17 porodica. -
April 1964 AMERICAN HORTICULTURAL
TIIE .A.~ERIC.A.N ~GAZINE April 1964 AMERICAN HORTICULTURAL 1600 BLADENSBURG ROAD, NORTHEAST. WASHINGTON, D. C. For United Horticulture *** to accumulate, increase, and disseminate horticultural information Editorial Committee Directors Terms Expiring 1964 JOHN L. CREECH, Chairman R. C. ALLEN W. H . HODGE Ohio P. H. BRYDON FREDERIC P. LEE California CARL W. FENNINGER CONRAD B . LINK Pennsylvania CURTIS MAY JOHN E . GRAF District of Columbia FREDERICK G . MEYER GRACE P. WILSON Maryland WILBUR H . YOUNGMAN Terms Expiring 1965 HAROLD EpSTEIN New YOI'k Officers FRED C . GALLE Georgia PRESIDENT FRED J. NISBET North Carolina R USSELL J. SEIBERT J. FRANKLIN STYER Kennett Square, Pennsylvania Pennsylvania DONALD WYMAN FIRST VICE-PRESIDENT Massachusetts RAy C . ALLEN Terms Expiring 1966 Mansfie ld, Ohio J. HAROLD CLARKE Washington SECOND VICE-PRESIDENT JAN DE GRAAFF MRS. JULIAN W. HILL Oregon Wilm ington, Delaware CARLTON B . LEES Massachusetts RUSSELL J. SEIBERT ACTING SECRETARY-TREASURER . Pennsylvania GRACE P. WILSON DONALD WATSON Bladensburg, Maryland Michigan The American Horticultural Magazine is the official publication of the American Horticultural Society and is issued four times a year during the quarters commencing with January, April, J~ly and October. It is devoted to the dissemination of knowledge in the science and art of growmg ornamental plants, fruits, vegetables, and related subjects. Original papers increasing the historical, varietal, and cultural know ledges of plant mate~ials of economic and aesthetic importance are welcomed and will be published as early as possible. The Chairman of the Editorial Committee should be consulted for manuscript specifications. Reprints will be furnished in accordance with the following schedule of prices, plus post age, and should be ordered at the time the galley proof is returned by the author: One hundred copies-2 pp $6.60; 4 pp $12.10; 8 pp $25.30; 12 pp $36.30; Covers $12.10. -
Planting a Dry Rock Garden in Miam1
Succulents in Miam i-D ade: Planting a D ry Rock Garden John McLaughlin1 Introduction The aim of this publication is twofold: to promote the use of succulent and semi-succulent plants in Miami-Dade landscapes, and the construction of a modified rock garden (dry rock garden) as a means of achieving this goal. Plants that have evolved tactics for surviving in areas of low rainfall are collectively known as xerophytes. Succulents are probably the best known of such plants, all of them having in common tissues adapted to storing/conserving water (swollen stems, thickened roots, or fleshy and waxy/hairy leaves). Many succulent plants have evolved metabolic pathways that serve to reduce water loss. Whereas most plants release carbon dioxide (CO2) at night (produced as an end product of respiration), many succulents chemically ‘fix’ CO2 in the form of malic acid. During daylight this fixed CO2 is used to form carbohydrates through photosynthesis. This reduces the need for external (free) CO2, enabling the plant to close specialized pores (stomata) that control gas exchange. With the stomata closed water loss due to transpiration is greatly reduced. Crassulacean acid metabolism (CAM), as this metabolic sequence is known, is not as productive as normal plant metabolism and is one reason many succulents are slow growing. Apart from cacti there are thirty to forty other plant families that contain succulents, with those of most horticultural interest being found in the Agavaceae, Asphodelaceae (= Aloacaeae), Apocynaceae (now including asclepids), Aizoaceae, Crassulaceae, Euphorbiaceae and scattered in other families such as the Passifloraceae, Pedaliaceae, Bromeliaceae and Liliaceae. -
Distribución Geográfica Y Estado De Conservación De Las Poblaciones De Mammillaria Pectinifera
Revista Mexicana de Biodiversidad 85: 942-952, 2014 DOI: 10.7550/rmb.36338 Distribución geográfica y estado de conservación de las poblaciones de Mammillaria pectinifera Geographic distribution and conservation status of Mammillaria pectinifera populations Edward M. Peters1, Santiago Arizaga2 , Carlos Martorell3, Rigel Zaragoza4 y Exequiel Ezcurra5 1Comisión Nacional para el Conocimiento y Uso de la Biodiversidad. Liga Periférico- Insurgentes Sur 4903, Parques del Pedregal, Tlalpan, 14010 México, D. F., México. 2Escuela Nacional de Estudios Superiores, Unidad Morelia. Universidad Nacional Autónoma de México-Campus Morelia. Antigua Carretera a Pátzcuaro 8701, Col. Ex-Hacienda de San José de la Huerta. 58190 Morelia, Michoacán, México. 3Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México. Circuito Exterior s/n, Ciudad Universitaria, Coyoacán, 04510 México, D. F., México. 4Centro de Investigaciones en Geografía Ambiental. Universidad Nacional Autónoma de México. Antigua Carretera a Pátzcuaro # 8701, Col. Ex- Hacienda de San José de la Huerta, 58190 Morelia, Michoacán, México. 5Department of Botany and Plant Science. University of California-Riverside. 900 University Avenue, Riverside, California 92521, USA. [email protected] Resumen. Mammillaria pectinifera es un cacto amenazado y endémico del valle de Tehuacán. A mediados de la década de 1990 sólo se conocían 6 localidades con un número reducido de individuos, información que fue clave para proteger a la especie con instrumentos legales nacionales e internacionales. Para ampliar el conocimiento de la distribución geográfica y estado de conservación de esta especie, realizamos recorridos exploratorios en zonas ecológicas similares al de las poblaciones conocidas y, posteriormente, mediante un modelo predictivo de distribución geográfica. -
Agave Albopilosa (Agavaceae, Subgenero Littaea, Grupo Striatae), Una Especie Nueva De La Sierra Madre Oriental En El Noreste De Mexico
AGAVE ALBOPILOSA (AGAVACEAE, SUBGENERO LITTAEA, GRUPO STRIATAE), UNA ESPECIE NUEVA DE LA SIERRA MADRE ORIENTAL EN EL NORESTE DE MEXICO Ismael Cabral Cordero 1, José Ángel Villarreal Quintanilla 2, Eduardo A. Estrada Castillón 1 1 Universidad Autónoma de Nuevo León, Facultad de Ciencias Forestales, Apdo. postal 41, 67700 Linares, Nuevo León, México. [email protected] - [email protected] 2 Universidad Autónoma Agraria Antonio Narro, Departamento de Botánica, 25315 Buenavista, Saltillo, Coahuila, México. Resumen Sse propone como especie nueva a Agave albopilosa, un maguey pequeño rupícola del grupo striatae, de la sierra Madre oriental. Su característica más sobresaliente es un mechón circular de pelos blancos en la porción distal de las hojas, justo debajo de la espina terminal. Las flores son ligeramente campanuladas, similares a las de A. stricta, pero con lóbulos más cortos y también los frutos son más pequeños. Se incluye una ilustración de la planta y una clave para la separación de las especies del grupo. Palabras clave: Agavaceae, Agave albopilosa, México, Sierra Madre Oriental. Abstract Agave albopilosa is described as a new species. It is a small plant, among the agaves of the striatae group, growing in the Sierra Madre Oriental. Its most notorious feature is a ring of hairs near the end of the leaves, just below the terminal thorn. The flowers are characteristic of the group, more similar to the ones in A. stricta, slightly campanulate but with shorter lobes, and also a shorter fruit. An illustration and a key to separate the species of the group are provided. Key words: Agavaceae, Agave albopilosa, Mexico, Sierra Madre Oriental. -
Agave Kavandivi (Agavaceae: Grupo Striatae), Una Especie Nueva De Oaxaca, México
Revista Mexicana de Biodiversidad 84: 1070-1076, 2013 1070 García-Mendoza y Chávez-Rendón.- AgaveDOI: 10.7550/rmb.35241 nueva de Oaxaca Agave kavandivi (Agavaceae: grupo Striatae), una especie nueva de Oaxaca, México Agave kavandivi (Agavaceae: group Striatae), a new species from Oaxaca, Mexico Abisaí Josué García-Mendoza1 y César Chávez-Rendón2 1Jardín Botánico, Instituto de Biología, Universidad Nacional Autónoma de México. Apartado postal 70-614, 04510 México, D. F., México. 2Jardín Etnobotánico de Oaxaca, Centro Cultural Santo Domingo, Apartado postal 367, 68000 Oaxaca, Oaxaca, México. [email protected] Resumen. Se describe e ilustra a Agave kavandivi de la Mixteca alta en el estado de Oaxaca, México. La nueva especie pertenece al subgénero Littaea (Tagliabue) Baker, grupo Striatae Baker. Se le compara con A. dasylirioides Jacobi et C. D. Bouché, A. stricta Salm-Dyck y A. rzedowskiana P. Carrillo, R. Vega et R. Delgad. Palabras clave: Agave, maguey, Mixteca alta, distrito de Tlaxiaco, endemismo. Abstract. Agave kavandivi from the Mixteca Alta region, state of Oaxaca, Mexico is described as new and illustrated. It belongs to subgenus Littaea (Tagliabue) Baker, group Striatae Baker. It is compared with A. dasylirioides Jacobi et C. D.Bouché, A. stricta Salm-Dyck and A. rzedowskiana P. Carrillo, R. Vega et R. Delgad. Key words: Agave, maguey, Mixteca Alta, District of Tlaxiaco, endemism. Introducción vista molecular está pobremente caracterizada. Chase et al. (2009) consideraron que con la finalidad de facilitar La familia Agavaceae Dumort. (sensu Dahlgren et al., la comunicación entre los diferentes especialistas y 1985) integrada por 9 géneros, es endémica de América. usuarios y con propósitos de enseñanza, sería conveniente Se distribuye desde el sur de Canadá hasta Bolivia y dividir Asparagaceae en 7 subfamilias. -
Original Research Paper Commerce Saurabh Batwal* Gangadhar
Original Research Paper Volume-8 | Issue-8 | August-2018 | PRINT ISSN No 2249-555X Commerce EX. SITU CONSERVATION OF CACTI AND SUCCULENTS OF ARTS, SCIENCE AND COMMERCE COLLEGE, RAHURI, BOTANIC GARDEN, RAHURI TEHSHIL DISTRICT - AHMEDNAGAR ( M.S.) Prashant Rohokale NewArts, Commerce and Science College, Parner. - 414 302 (M.S.) India Serum Institute of India Pvt Limited, Pune – 411 028 (M.S.) India *Corresponding Saurabh Batwal* Author Gangadhar 3Arts, Science and Commerce College, Rahuri-413 705 (M.S.) India Rohokale ABSTRACT Arts, Science and Commerce College, Rahuri (Ganesh Tekadi) of Rahuri tehasil encompass the geographical area (19.3927° N, 74.6488° E) of North-East Maharashtra, India. It represents a rare mixture of plants with various varieties. Entire area comes under region have deciduous forests with some invasive species. The present investigation is focused on planting and conserving the various cacti and succulents of this region. The study area is not favorable for plant growth because of very hard strata, This is an opportunity taken into consideration and college has developed large number of cacti and succulents and conserve them. The Ex. situ conservation of cacti and succulents have been conducted into different parts of world by various workers, 20,9,7,12,1,4,5,14,18,15,16. About 300 species of cactus and succulents were planted conserved and identified on the basis of there morphotaxonomy. In the present study total 184 species of cacti and 116 species of succulents belonging to 88 genera and 16 families were recorded. Thus efforts are made to increase and conserve the number of cacti and succulents in the present study area. -
Agave Files Formerly Included in Hatch's Perennials Not Placed in the HIP System
Copyright 2013, 2016, 2019, 2020. Laurence C. Hatch. All Reserved. This is a work in progress based on the Agave files formerly included in Hatch's Perennials not placed in the HIP system. It has two parts, the 2013 checklist of cultivar names in Agave and the full NOD II format encyclopedia with images towards the end of the file. This file will be revised and expanded over time but it already contains more cultivar descriptions than the majority of reference works and certainly more names at 637, exclusive of botanical taxa. x Mangave, the important hybrid genus now with more than 50 cultivated taxa will be added soon. New cultivars are being added to the encyclopedia but not the checklist, which serves as a historical document only. NOS Agave Cultivar and Trademarked Clone Checklist from HITS (House, Interior, Tropical, and Succulent) Plants (see cultivar.org) Version: 1.0 Copyright 2013. Laurence C. Hatch. All Rights Reserved. Extraction, reuse, or repurposing in whole or any part of this content is prohibited as is publication, sharing, or distribution by any means, method, or technology of more than 5% of this list is prohibited excelt by written permission of the author. All names are cultivars except those in 100% uppercase which are trademarked clones or strains, regardless of any annotations 1. Abrupta (americana) = A. abrupta -= A. americana subsp. americana var. expansa per modern taxonomists. However Trelease knew it as a cultivated taxon and there is some evidence it has very finely toothed margins like fine saw blades, quite unlike much material assigned to var. -
AGAVACEAE Abisaí Josué García-Mendoza*
FLORA DEL VALLE DE TEHUACÁN-CUICATLÁN Fascículo 88. AGAVACEAE Abisaí Josué García-Mendoza* *Jardín Botánico Instituto de Biología INSTITUTO DE BIOLOGÍA UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO 2011 Primera edición: 19 de septiembre de 2011 D.R. © 2011 Universidad Nacional Autónoma de México Instituto de Biología. Departamento de Botánica ISBN 968-36-3108-8 Flora del Valle de Tehuacán-Cuicatlán ISBN 978-607-02-2566-6 Fascículo 88 Este fascículo se publica gracias al apoyo económico recibido de la Comisión Nacional para el Conocimiento y Uso de la Biodiversidad. Dirección del autor: Universidad Nacional Autónoma de México Jardín Botánico, Instituto de Biología 3er. Circuito de Ciudad Universitaria Coyoacán, 04510. México, D.F. 1 En la portada: 2 1. Mitrocereus fulviceps (cardón) 2. Beaucarnea purpusii (soyate) 3 4 3. Agave peacockii (maguey fibroso) 4. Agave stricta (gallinita) Dibujo de Elvia Esparza FLORA DEL VALLE DE TEHUACÁN-CUICATLÁN 88: 1-95. 2011 AGAVACEAE1 Dumort. Abisaí Josué García-Mendoza Bibliografía. Angiosperm Phylogeny Group III. 2009. An update of the Angiosperm Phylogeny Group classification for orders and families of flowering plants: APG III. Bot. J. Linn. Soc. 161: 105-121. Bogler, D.J. & B.B. Simpson. 1995. A chloroplast DNA study of the Agavaceae. Syst. Bot. 20(2): 191-205. Bogler, D.J. & B.B. Simpson. 1996. Phylogeny of Agavaceae based on its rDNA sequence variation. Amer. J. Bot. 83(9): 1225-1235. Bogler, D.J., J.C. Pires & J. Francisco-Ortega. 2006. Phylogeny of Agavaceae based on ndhF, rbcL, and its sequences: Implications of molecular data for classifications. Aliso 22: 313- 328. Dahlgren, R.M.T., H.T. -
Contractile Roots in Succulent Monocots: Convergence, Divergence and Adaptation to Limited Rainfall
Plant, Cell and Environment (2008) doi: 10.1111/j.1365-3040.2008.01832.x Contractile roots in succulent monocots: convergence, divergence and adaptation to limited rainfall GRETCHEN B. NORTH, ERIN K. BRINTON & TADAO Y. GARRETT Department of Biology, Occidental College, Los Angeles, CA 90041, USA ABSTRACT (CRs), with a zone usually near the shoot base that is devel- opmentally and anatomically specialized to contract longi- Contractile roots (CRs) that pull shoots further down in the tudinally, appear to be likely candidates for convergence. soil are a possible example of convergent evolution in two They occur in diverse plant groups such as cycads, ferns, monocot families, the Agavaceae and the Asphodelaceae. dicotyledons and many monocotyledons, and in diverse life- The association between CRs, water uptake and habitat forms, including arborescent taxa and geophytes (Pütz 2002; aridity was investigated for agaves, yuccas and aloes by Jaffe & Leopold 2007). The habitats for plants with CRs assessing the occurrence of CRs and the amount of root vary from tropical to alpine, mesic to arid, although most contraction for glasshouse-grown plants with respect to have unfavourable seasons or periods characterized by cold mean annual rainfall of their native habitats. Structural fea- temperatures or drought (Pütz 2002). The diversity of the tures of CRs as well as root hydraulic conductance were plant groups and their habitats obscures possible similari- compared with those of non-contractile roots (NCRs). CRs ties in the functional responses of CRs to similar selective occurred in 55% of the 73 species examined, including 64% pressures that would point towards convergent evolution. -
Nuclear DNA Amounts in Angiosperms: Targets, Trends and Tomorrow
Annals of Botany Page 1 of 124 doi:10.1093/aob/mcq258, available online at www.aob.oxfordjournals.org Nuclear DNA amounts in angiosperms: targets, trends and tomorrow M. D. Bennett* and I. J. Leitch Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, UK * For correspondence. E-mail: [email protected] Received: 25 August 2010 Returned for revision: 18 October 2010 Accepted: 24 November 2010 CONTENTS INTRODUCTION 2 Extending the range of genome sizes encountered in angiosperms 3 The need for reference lists 4 TARGETS IN GENOME SIZE RESEARCH 4 Downloaded from Meeting targets for species representation 4 Progress towards targets for familial representation 5 Improved systematic representation for genera 6 Improved representation of other groups 6 TRENDS IN TECHNIQUES USED TO ESTIMATE GENOME SIZE 7 The rise in flow cytometry as the technique of choice for genome size estimations 7 http://aob.oxfordjournals.org/ Development of different isolation buffers for flow cytometry 7 The application of flow cytometry to plant systematics 8 Recent developments in the application of flow cytometry to genome size studies 8 (i) The use of seeds 8 (ii) Ease of access to methodological data 8 (iii) New equipment 8 Are there any new techniques for estimating genome size on the horizon? 9 (i) Can real time PCR be used for estimating plant genome sizes? 9 (ii) Will ‘complete’ genome sequencing give useable genome size estimates? 9 TOMORROW 13 at NIH Library on December 30, 2015 Uncovering and collating genome size data from diverse published sources 14 Screening ex situ and in situ collections as sources of target taxa 15 DEDICATION 15 LITERATURE CITED 16 APPENDIX 19 Notes to the Appendix 19 Original references for DNA values 121 † Background and Aims The amount of DNA in an unreplicated gametic chromosome complement is known as the C-value and is a key biodiversity character of fundamental significance with many practical and predictive uses.