Oxford Plant Systematics with News from Oxford University Herbaria (OXF and FHO), Department of Plant Sciences, Oxford

Total Page:16

File Type:pdf, Size:1020Kb

Oxford Plant Systematics with News from Oxford University Herbaria (OXF and FHO), Department of Plant Sciences, Oxford Oxford Plant Systematics With news from Oxford University Herbaria (OXF and FHO), Department of Plant Sciences, Oxford OPS 17 May 2011 Cloud forest plants on the Eastern slopes of the Andes Foreword Contents This issue of OPS highlights the roles of botanical exploration, herbarium and Foreword laboratory work for systematics research in Stephen A. Harris …………………………………………………….. 2 some of the world’s biodiversity hotspots. Robert Scotland emphasises the importance of herbaria in the global species discovery News items …………………………………………………………....... 3 process. Caroline Pannell, John Wood and Steven Heathcote highlight the value of Improving ‘hotspot’ conservation fieldwork for research on Aglaia in Papua Denis Filer ……………………………………………………...……. 3 New Guinea, Bolivian cerrado plants and Andean bromeliads. Elizabeth Cooke and A new Taxonomy Library for Oxford John Wood use chloroplast DNA sequences Anne Marie Catterall …………..…………………………………….. 3 to identify a mysterious plant collected in the Bolivian cerrado. Detailed field and Publications 2009 – 10 ………………………………………………… 4 laboratory work enable Marcelo Simon and Colin Hughes to investigate the evolution of the Cerrado biome. Abstract of systematics thesis submitted in 2010 From our eighteenth-century archives, a Tiina E. Sarkinen …………………………………………………….. 5 collection of John Sibthorp’s undergraduate botany lectures is showcased, and Johann Student reports Dillenius’s ‘missing’ German lichens Systematics and Phylogeography of Cardamine hirsuta L. rediscovered. John Wood ‘finds’ Conan Elizabeth Cooke ……………………………………………………... 5 Doyle’s ‘Lost World’ in Bolivia. The evolutionary ecology of nickel hyperaccumulation in Alyssum L. Stephen A. Harris Curator of Oxford University Herbaria and related species Tom Flynn …………………………………………………………… 5 Cover images: Evolution of the Cerrado Plants from the Eastern slopes of the Andes Marcelo Simon & Colin Hughes …………………………………….. 6 including bromeliads like the spectacular Tillandsia rubella Baker (top right) in an Stryphnodendron fissuratum, a distinctive endangered tree of the South isolated patch of mossy forest at the tree American cerrados line; the colourful Guzmania squarrosa John R.I. Wood ……………………………………………………… 8 (Mez & Sodiro) L.B.Sm. & Pittendr. (bottom left); and the bright green flowers of Puya membranacea L.B.Sm. (bottom Andes to Amazon in search of Bromeliads right). It is not just bromeliads, but the cloud Steven Heathcote ……………………………………………………. 9 forest is full of beautiful plants, for example Eccremis coarctata (Ruiz & Pav.) Baker, an Molecular sequencing solves a taxonomic mystery endemic species of Hemerocallidaceae (top Elizabeth Cooke & John R.I. Wood ………………………….……. 11 left). All photographs on front cover by Steven Herbaria are the major frontier for species discovery Heathcote, see article on pages 9-11. Robert Scotland …………………………………………………… 12 Typesetting and layout of this issue of OPS Aglaia novelties from Papua New Guinea by Serena Marner Caroline Pannell ………………………………………………….. 14 The Lost World of Sir Arthur Conan Doyle Department of Plant Sciences, John R.I. Wood ……………………………………………………. 15 University of Oxford, South Parks Road, Oxford John Sibthorp: teacher of botany OX1 3RB, U.K. Stephen A. Harris …………………………………………………. 16 Tel. +44 (0) 1865 275000 Oxford Plant Systematics Research On the search for ‘missing’ lichen collections Group website: Ulrich Kirschbaum ……………………………………….……….. 17 http://herbaria.plants.ox.ac.uk News from the Herbaria Oxford University Herbaria database at: Visitors, Fielding-Druce (OXF) and Daubeny (FHO) http://dps.plants.ox.ac.uk/bol/oxford Serena Marner ………………………………………………….… 18 Back issues of OPS can be viewed at: BRAHMS 6.9 May 2011 http://herbaria.plants.ox.ac.uk/OPS.html Denis Filer ……………………………………………………..…. 19 2 Oxford Plant Systematics OPS 17 May 2011 News items this apparent pattern at the global level A new Taxonomy disguises a very poor level of detail at the local level. Even within global hotspot Library for Oxford regions, whether the Peruvian Andes, At the end of 2009 Dr Colin Hughes took Sumatra or the Cape region of South Africa, up a position as an assistant professor in the there are long horizons of botanically As part of the next stage in the creation of Institute of Systematic Botany at the uniform vegetation that is poor in rarities. an integrated library service for Oxford University of Zurich where he will continue Perhaps these regions should be where University, the main collections from the work on legume systematics and evolution. urban or agricultural developments are existing Plant Sciences Library were He retains a part-time link to the directed in order to reduce species’ successfully transferred to the Radcliffe Department of Plant Sciences in Oxford extinction. Conversely, between the global Science Library (RSL), the nearby central working on the Global Hotspot Initiative. hotspot regions there are isolated pockets of science library in autumn 2010. The endangered plant-life, as yet undocumented collections were merged with the RSL’s In 2009 Marcelo Simon was awarded the or too small to appear on world maps, but from the 1st October, in time for the new Brian Thomas Styles Memorial Prize in all the more important to conserve because academic year. All existing services recognition of his D.Phil. thesis on the of their isolation and tenuous existence. (including lending of books) continue to be Systematics and evolution of Mimosa Knowledge of hotspots at all scales available at the RSL. The Oxford Forest (Leguminosae) and the assembly of a facilitates selection of areas and methods for Information Service was also relocated to Neotropical plant diversity hotspot. This conservation or sustainable economic the RSL, and continues to collect world prize is awarded from time to time for an development. But, even when the global forestry materials in conjunction with CAB outstanding D.Phil. thesis in the subject area significance of small areas is well known to International. At the same time, Oxford of tropical or subtropical plant taxonomy. scientists, the detailed information and University Library Services was rebranded analytical tools that are crucial for sound as ‘Bodleian Libraries’. Colin Hughes visited Bolivia in November stewardship and practical management, or Taxonomic materials, which need to be to December 2009 in association with the for minimizing environmental impacts, are used in the Herbaria alongside botanical Darwin Initiative project - Conservation of often unavailable locally. specimens, have however remained in the the Cerrados of Eastern Bolivia – to deliver The research programme is an innovative Department of Plant Sciences, creating a a training course on legume taxonomy and global research project to explore, discover new collection which is now known identification and work with Margoth and publicise hotspots of plant diversity at formally as the ‘Sherardian Library of Plant Atahuachi on Bolivian Mimosa. local and national levels coupled with a Taxonomy – one of the Bodleian Libraries biodiversity awareness programme. Our of the University of Oxford’. The Rosemary Wise undertook a third trip to project will deploy and develop analytical Sherardian Library is housed partly in the Bolivia with John Wood in October 2009. tools, rigorous reports and user-friendly Herbaria and associated stack; a Reading Besides painting 30 plants to be promotional products to publicise facts, Room for study (accessed by swipe card) incorporated in new ‘Cerrado vegetation figures, maps and field guides at different has also been redeveloped in an area which posters’, Rosemary had three botanical scales, showing where hotspots of was originally part of the existing Plant illustrators with her, two from Bolivia and biodiversity are located and how to Sciences Library space. This new one from Argentina, to learn techniques of recognize them. The study areas focus on Sherardian Library continues to be open to water colour painting. the tropics and sub-tropics where major any member of the university, holders of a hotspots occur. In each priority area, one or Bodleian Libraries reader’s card and visitors Oxford University Herbaria was awarded more regional surveys will address by appointment. Accredited Status by the Museums, conservation priorities and threats at various With these moves there have been some Libraries & Archives Council in April 2010. levels. Alongside the many practical and library staff changes. Anne Marie Catterall This demonstrates the commitment of the applied benefits and impacts, the (formerly Anne Marie Townsend) is in Herbaria to manage its collections to programme will help answer more charge of the new Sherardian Library and nationally agreed standards, and builds on fundamental questions about why remains in the Department of Plant Sciences the previous Registered Status of the biodiversity is so unevenly distributed; how based in the Fielding-Druce Herbarium; Herbaria. hotspots of diversity are assembled and other library staff are now based in the distributed; and how they might respond to Radcliffe Science Library, but help out in The artist Sarah Simblet, who has been global environmental changes. the Sherardian Library on a rota basis. working in the herbaria, has published New data will be gathered from selected Roger Mills (Head of Science Liaison and Botany for the Artist (2010, Dorling countries using Rapid Botanical Survey Specialist Services) retired on the 31st Kindersley; ISBN-10 1405332271) which (RBS) methods and combining these with
Recommended publications
  • Lichen Flora of the Malham Tarn Area
    Field Studies, 10, (2001) 57 - 92 LICHEN FLORA OF THE MALHAM TARN AREA M. R. D. SEAWARD Department of Environmental Science, University of Bradford, Bradford BD7 1DP AND A. PENTECOST Division of Life Sciences, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 8WA ABSTRACT A checklist of lichens, lichenicolous fungi and associated fungi recorded from an area within 5 km of the Malham Tarn Field Centre, Yorkshire is accompanied by background information on the ecology and the history of recording there. In all, 346 taxa (including Lecidea obluridata Nyl., new to Britain) have been recorded from the area; 48 are based on old records, most of which are presumed extinct, but some are questionable in the absence of supporting herbarium material. COLLECTORS The earliest lichen records from Malham are attributable to Richard Richardson (1663- 1741) of North Bierley, the first Yorkshireman to collect lichens; his localised material, used by Johann Jacob Dillenius (1684-1747) for his revision of Ray's Synopsis (1724) and his own Historia Muscorum (1742), is to be found in the Dillenian and Sherardian Herbaria at Oxford University (OXF). Other botanists contributing to our knowledge of Malham lichens in the 18th and 19th centuries include John G. Baker (1834-1920), William Borrer (1781-1862), Benjamin Carrington (1827-1893), Samuel Hailstone (1768-1851), Thomas Hebden (1849-1931), William Hudson (1734-1793), Frederic A. Lees (1847-1921), John Nowell (1802-1867), Abraham Shackleton (1830-1916), Abraham Stansfield (1802-1880), William West (1848- 1914) and John Windsor (1787-1868). Hailstone's Malham records appear in Whitaker (1805), but many are unlocalised, being expressed as occurring in 'the Craven area'.
    [Show full text]
  • Growing Alcantarea
    Bromeliaceae VOLUME XLII - No. 3 - MAY/JUNE 2008 The Bromeliad Society of Queensland Inc. P. O. Box 565, Fortitude Valley Queensland, Australia 4006, Home Page www.bromsqueensland.com OFFICERS PRESIDENT Olive Trevor (07) 3351 1203 VICE PRESIDENT Anne McBurnie PAST PRESIDENT Bob Reilly (07) 3870 8029 SECRETARY Chris Coulthard TREASURER Glenn Bernoth (07) 4661 3 634 BROMELIACEAE EDITOR Ross Stenhouse SHOW ORGANISER Bob Cross COMMITTEE Greg Aizlewood, Bruce Dunstan, Barry Kable, Arnold James,Viv Duncan, David Rees MEMBERSHIP SECRETARY Roy Pugh (07) 3263 5057 SEED BANK CO-ORDINATOR Doug Parkinson (07) 5497 5220 AUDITOR Anna Harris Accounting Services SALES AREA CASHIER Norma Poole FIELD DAY CO-ORDINATOR Ruth Kimber & Bev Mulcahy LIBRARIAN Evelyn Rees ASSISTANT SHOW ORGANISER Phil Beard SUPPER STEWARDS Nev Ryan, Barry Genn PLANT SALES Pat Barlow Phil James COMPETITION STEWARDS Dorothy Cutcliffe, Arnold James CHIEF COMPETITION STEWARD HOSTESS Gwen Parkinson BSQ WEBMASTER Ross Stenhouse LIFE MEMBERS Grace Goode OAM Peter Paroz, Michael O’Dea Editors Email Address: [email protected] The Bromeliad Society of Queensland Inc. gives permission to all Bromeliad Societies to re- print articles in their journals provided proper acknowledgement is given to the original author and the Bromeliaceae, and no contrary direction is published in Bromeliaceae. This permission does not apply to any other person or organisation without the prior permission of the author. Opinions expressed in this publication are those of the individual contributor and may not neces- sarily reflect the opinions of the Bromeliad Society of Queensland or of the Editor Authors are responsible for the accuracy of the information in their articles.
    [Show full text]
  • A Biographical Index of British and Irish Botanists
    L Biographical Index of British and Irish Botanists. TTTEN & BOULGER, A BIOaEAPHICAL INDEX OF BKITISH AND IRISH BOTANISTS. BIOGRAPHICAL INDEX OF BRITISH AND IRISH BOTANISTS COMPILED BY JAMES BEITTEN, F.L.S. SENIOR ASSISTANT, DEPARTMENT OF BOTANY, BBITISH MUSEUM AKD G. S. BOULGEE, E.L. S., F. G. S. PROFESSOR OF BOTANY, CITY OF LONDON COLLEGE LONDON WEST, NEWMAN & CO 54 HATTON GARDEN 1893 LONDON PRINTED BY WEST, NEWMAN AND HATTON GAEDEN PEEFACE. A FEW words of explanation as to the object and scope of this Index may fitly appear as an introduction to the work. It is intended mainly as a guide to further information, and not as a bibliography or biography. We have been liberal in including all who have in any way contributed to the literature of Botany, who have made scientific collections of plants, or have otherwise assisted directly in the progress of Botany, exclusive of pure Horticulture. We have not, as a rule, included those who were merely patrons of workers, or those known only as contributing small details to a local Flora. Where known, the name is followed by the years of birth and death, which, when uncertain, are marked with a ? or c. [circa) ; or merely approximate dates of "flourishing" are given. Then follows the place and day of bu'th and death, and the place of burial ; a brief indication of social position or occupation, espe- cially in the cases of artisan botanists and of professional collectors; chief university degrees, or other titles or offices held, and dates of election to the Linnean and Eoyal Societies.
    [Show full text]
  • Univ Record 2014
    University College Record 72 October 2014 Professor Wyndham John Albery (5 April 1936 – 2 December 2013) Fellow 1962-1978 Master 1989-1997 University College Record October 2014 The Record Volume XVII Number 1 2014 Contents The Editor’s Notes 1 The Master’s Notes 2 Fellows and Staff 5 The Governing Body and Fellows 6 Honorary Fellows 11 Foundation Fellows 12 Newly Elected Fellows 13 The Master’s and Fellows’ News 15 Recognition of Distinction 2014 18 Leaving Fellows and Staff 19 Academic Results, Awards and Achievements 23 Academic Results and Distinctions 24 University Prizes and Other Awards 29 Scholarships and Exhibitions 32 Travel Scholarships 38 2013-14 in Review 39 From the Chaplain 40 From the Librarian 41 From the Development Director 43 The Chalet 49 Junior and Weir Common Rooms 50 Obituaries 52 Old Members 53 Former Fellows and JRFs 66 Degree Ceremonies 69 College Contact Details 70 Photography credits: p43 - Janine Bentivegna Photography p52 - Max Mulvany iv Editor’s Notes With a change in editorship and a subsequent re-evaluation of the College’s communi- cations with its Old Members, you will see just from its thickness that this year’s Record is a considerable departure from recent editions. There is no doubt, however, in the continued historical and archival importance of this publication, and at no point was it considered that the Record would discontinue. Many of you have collections of the Record dating back to the year you came up, cherish the arrival of each edition, and read it from cover to cover. For the last nine years, Dr Robin Darwall- Smith has consistently produced a Record that is superbly written, accurate and full of interest, and I am sure that readers will want to join me in thanking Robin for his work as Editor in this time.
    [Show full text]
  • Silvestrol Induces Early Autophagy and Apoptosis in Human Melanoma Cells Wei-Lun Chen1, Li Pan2, A
    Chen et al. BMC Cancer (2016) 16:17 DOI 10.1186/s12885-015-1988-0 RESEARCH ARTICLE Open Access Silvestrol induces early autophagy and apoptosis in human melanoma cells Wei-Lun Chen1, Li Pan2, A. Douglas Kinghorn2, Steven M. Swanson1,3 and Joanna E. Burdette1* Abstract Background: Silvestrol is a cyclopenta[b]benzofuran that was isolated from the fruits and twigs of Aglaia foveolata, a plant indigenous to Borneo in Southeast Asia. The purpose of the current study was to determine if inhibition of protein synthesis caused by silvestrol triggers autophagy and apoptosis in cultured human cancer cells derived from solid tumors. Methods: In vitro cell viability, flow cytometry, fluorescence microscopy, qPCR and immunoblot was used to study the mechanism of action of silvestrol in MDA-MB-435 melanoma cells. Results: By 24 h, a decrease in cyclin B and cyclin D expression was observed in silvestrol-treated cells relative to control. In addition, silvestrol blocked progression through the cell cycle at the G2-phase. In silvestrol-treated cells, DAPI staining of nuclear chromatin displayed nucleosomal fragments. Annexin V staining demonstrated an increase in apoptotic cells after silvestrol treatment. Silvestrol induced caspase-3 activation and apoptotic cell death in a time- and dose-dependent manner. Furthermore, both silvestrol and SAHA enhanced autophagosome formation in MDA-MB-435 cells. MDA-MB-435 cells responded to silvestrol treatment with accumulation of LC3-II and time-dependent p62 degradation. Bafilomycin A, an autophagy inhibitor, resulted in the accumulation of LC3 in cells treated with silvestrol. Silvestrol-mediated cell death was attenuated in ATG7-null mouse embryonic fibroblasts (MEFs) lacking a functional autophagy protein.
    [Show full text]
  • Gideon Smith Have Access to Such a Fine Botanical | in THIS ISSUE | Library, Regarded by Many As the Editorialeditorialeditorial 222 Largest of Its Kind in Africa
    Volume 4 No. 1 ISSN 1027–4286 April 1999 PROFILE: Gideon Smith have access to such a fine botanical | IN THIS ISSUE | library, regarded by many as the EditorialEditorialEditorial 222 largest of its kind in Africa. Realising PPPrrrofile: Gideon Smith 333 this, and how isolated many southern How to write articles for publication (5) 777 African herbaria and botanical gar- Botanical Gardens Needs Assessment Update 999 dens are in terms of access to recent Grass Identification Training Course 232323 (and indeed much of the earlier) Southern African Society for Systematic Biology 272727 literature, we started Hugh Glen’s FFFrrrom the Wom Webebeb 313131 regular column—appropriately called Flora zambesiaca update 343434 RRRararare succulents in the Eastern Cape/Little Karararoooooo 353535 The Paper Chase—in the April 1997 Sting in the tail 373737 edition of our newsletter. This regular New International Agenda for Botanic Gardens 393939 feature has grown over the past two Historic South African Garden Curators’ MeetingMeetingMeeting 454545 years, and I trust still serves the PPPostgraduates supported by SABONETONETONET 464646 purpose initially intended amongst Southern African herbaria. Part 3. PREPREart 474747 southern African botanists, and even Index herbariorum: southern African supplement 505050 those outside southern Africa. Should Species Plantarum: Flora of the Worldorldorld 525252 you know of any new book written ObituarObituarObituary: Leslie Codd 565656 about southern Africa’s plants, we The PPThe aper Chase 585858 would like to hear from you. E-mail addressesessesesses 666666 Regional News Update 737373 It is impossible to mention everything that is happening within the region, FRONT COVER: Caricature of Gideon Smith. Drawn by Gerhard Marx (1990).
    [Show full text]
  • New Cytotoxic Pregnane-Type Steroid from the Stem Bark of Aglaia Elliptica (Meliaceae)
    ORIGINAL ARTICLE Rec. Nat. Prod. 12:2 (2018) 121-127 New Cytotoxic Pregnane-type Steroid from the Stem Bark of Aglaia elliptica (Meliaceae) Kindi Farabi 1, Desi Harneti 1, Nurlelasari 1, Rani Maharani 1, Ace Tatang Hidayat 1,2, Khalijah Awang 3, Unang Supratman 1,2,* and Yoshihito Shiono 4 1Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Sumedang, Indonesia 2Central Laboratory of Universitas Padjadjaran, Jatinangor 45363, Sumdeang, Indonesia 3Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 59100, Malaysia 4Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata 997-8555, Japan (Received July 5, 2017; Revised September 13, 2017; Accepted September 13, 2017) Abstract: A new pregnane-type steroid, 2α-hydroxy-3α-methoxy-5α-pregnane (1), together with three known dammarane-type triterpenoid, 3β-acetyl-20S,24S-epoxy-25-hydroxydammarane (2), 20S,24S-epoxy-3α,25- dihydroxydammarane (3), and eichlerianic acid (4) have been isolated from the stem bark of Aglaia elliptica. The structures were determined by spectroscopic methods including the 2D-NMR techniques. Compound 1-4 showed moderate cytotoxic activity against P-388 murine leukemia cells. Keywords: Pregnane-type steroid; Aglaia elliptica; cytotoxic activity; Meliaceae. © 2018 ACG Publications. All rights reserved. 1. Introduction Aglaia is the largest genus belong to Meliaceae family contain about 150 species, and more than 65 species of them were grown in Indonesia [1,2]. Recently, Aglaia genus used traditionally for treatment some desease. In Thailand, A. odorata used for the treatment of traumatic injury, bruises, febrifuge, heart disease and toxin by causing vomiting [3] and the bark of A.
    [Show full text]
  • Rare Plants Group 2007 Newsletter
    Ashmolean Natural History Society of Oxfordshire Rare Plants Group 2007 Newsletter Fen Violet, Viola persicifolia Note the mite waiting for a pollinating insect Photo: Phil Cutt INTRODUCTION Many of “our” species did well in 2007; Green Hound’s-tongue reappeared, just, at its Cotswold site; while Pasqueflower flourished on the chalk downland. Ploughing of the Wild Celery field has produced a record showing of this mainly coastal biennial. One of the young reinforcement plants of True Fox-sedge at BBOWT’s Asham Meads reserve even flowered. However, the little newly-planted Meadow Clary plants at Ardley were dug up by rabbits, and left to die. Fen Violet kept its numbers up, thanks to the dedicated farmer, the MoD warden and energetic volunteers from the neighbouring RSPB reserve. Preliminary research indicates that Fen Violet is producing lots of seed. Most pleasing of all John Killick found a new county record while working on the Rare Plants Register (see page 8). The spring and summer floods had dramatic effects on some species – Grass Poly, a charming magenta-flowered annual of flooded field corners, had a huge showing, after having been absent last year. Creeping Marshwort seemed to survive the floods – the plants at North Hinksey were under water for weeks in July and August, but went on to flower. We found Cuckoo-flower trying to beat the floods with little plantlets along the midribs of the leaves. Viviparous plantlets on the leaves of Cuckoo-flower, Cardamine pratensis, on Binsey Green; this is a known phenomenon but we think this maybe a response to the heavy summer flooding of 2007.
    [Show full text]
  • Cytotoxic Sesquiterpenoid from the Stembark of Aglaia Argentea
    Research Journal of Chemistry and Environment_______________________________Vol. 22(Special Issue II) August (2018) Res. J. Chem. Environ. Cytotoxic Sesquiterpenoid from the Stembark of Aglaia argentea (Meliaceae) Harneti Desi1, Farabi Kindi1, Nurlelasari1, Maharani Rani1, Supratman Unang1* and Shiono Yoshihito2 1. Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadajaran, Jatinangor 45363, INDONESIA 2. Department of Food, Life and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata 997-8555, JAPAN *[email protected] Abstract reducing fever and for treating contused wound, coughs and Aglaia argentea also known as langsat hutan in skin diaseases16-18. Previous phytochemical studies of A. Indonesia is a higher plant traditionally used for argentea have revealed the presence of compounds with moisturizing the lungs, reducing fever and treating cytotoxic activity including cycloartane-type triterpenoids against KB cells19 and 3,4-secoapotirucallane-type contused wound, coughs and skin diseases. The triterpenoids against KB cells20, but there are no reports of stembark of A. argentea was successively extracted sesquiterpenes of this species before. with methanol. The methanolic extract then partitioned by n-hexane, ethyl acetate and n-butanol. The n-hexane Herein we isolated, determined the chemical structure and extract was chromatographed over a vacuum-liquid tested at P388 murine leukemia cells of one sesquiterpenoid chromatographed (VLC) column packed with silica gel compound from n-hexane extract of A. argentea. 60 by gradient elution. Material and Methods The VLC fractions were repeatedly subjected to General: The IR spectra were recorded on a Perkin-Elmer normal-phase column chromatography and spectrum-100 FT-IR in KBr. Mass spectra were obtained with a Synapt G2 mass spectrometer instrument.
    [Show full text]
  • The Genus Guzmania (Bromeliaceae) in Venezuela
    The genus Guzmania (Bromeliaceae) in Venezuela Compiled by Yuribia Vivas Fundación Instituto Botánico de Venezuela Bruce Holst & Harry Luther Marie Selby Botanical Gardens The genus Guzmania was described by Hipólito Ruiz and José Pavón in 1802 in the "Flora Peruviana et Chilensis." The type species is Guzmania tricolor Ruiz & Pav. The name honors Spanish naturalist Anastasio Guzmán, a student of South American plants and animals (Grant & Zijlstra 1998). Species of Guzmania are distributed from the southern USA (Florida) and Mexico to Brazil and Peru, including the Most species of Guzmania are found in cloud forests at middle elevations. Antilles; they are largely absent from lowland Amazonia. Photograph by Yuribia Vivas. Figure modified from Smith & Downs, Flora Neotropica. Guzmania is placed in the subfamily Tillandsioideae, and is distinguished from other members of the subfamily (Vriesea,Tillandsia, Catopsis, Racinaea, Alcantarea, Mezobromelia, and Werauhia) by having polystichously arranged flowers (that is, arranged in many planes on the inflorescence axis), white, whitish, yellow, or greenish petals that lack nectar scales, and having generally reddish brown-colored seeds. In general aspect, Guzmania is difficult to distinguish from Mezobromelia since both are polystichously flowered and may have similar color schemes, but the presence of nectar scales in Mezobromelia and absence inGuzmania separates them. Approximately 200 species and 17 varieties of Guzmania are known, making it the third largest genus in the subfamily, after Tillandsia and Vriesea. The table below is a listing of Guzmania in Venezuela, with synonymy, types, phenology, and distribution. Column two contains photographs of live plants and the third column, type specimens. Click on the photos for enlarged images.
    [Show full text]
  • Discovery of Anticancer Agents of Diverse Natural Origin By
    Discovery of Anticancer Agents of Diverse Natural Origin By: Douglas Kinghorn, Esperanza J. Carcache De Blanco, David M. Lucas, H. Liva Rakotondraibe, Jimmy Orjala, D. Doel Soejarto, Nicholas H. Oberlies, Cedric J. Pearce, Mansukh C. Wani, Brent R. Stockwell, Joanna E. Burdette, Steven M. Swanson, James R. Fuchs, Mitchell A. Phelps, Lihui Xu, Xiaoli Zhang, and Young Yongchun Shen “Discovery of Anticancer Agents of Diverse Natural Origin.” Douglas Kinghorn, Esperanza J. Carcache De Blanco, David M. Lucas, H. Liva Rakotondraibe, Jimmy Orjala, D. Doel Soejarto, Nicholas H. Oberlies, Cedric J. Pearce, Mansukh C. Wani, Brent R. Stockwell, Joanna E. Burdette, Steven M. Swanson, James R. Fuchs, Mitchell A. Phelps, Lihui Xu, Xiaoli Zhang, and Young Yongchun Shen. Anticancer Research, 2016, 36 (11), 5623-5637. Made available courtesy of the International Institute of Anticancer Research: http://ar.iiarjournals.org/content/36/11/5623 ***© 2016 International Institute of Anticancer Research. Reprinted with permission. No further reproduction is authorized without written permission from International Institute of Anticancer Research. *** Abstract: Recent progress is described in an ongoing collaborative multidisciplinary research project directed towards the purification, structural characterization, chemical modification, and biological evaluation of new potential natural product anticancer agents obtained from a diverse group of organisms, comprising tropical plants, aquatic and terrestrial cyanobacteria, and filamentous fungi. Information is provided on how these organisms are collected and processed. The types of bioassays are indicated in which initial extracts, chromatographic fractions, and purified isolated compounds of these acquisitions are tested. Several promising biologically active lead compounds from each major organism class investigated are described, and these may be seen to be representative of a very wide chemical diversity.
    [Show full text]
  • Smithsonian Institution
    SMITHSONIAN INSTITUTION UNITED STATES NATIONAL MUSEUM CONTRIBUTIONS FROM THE United States National Herbarium Volume 29, Part 10 STUDIES IN THE BROMELIACEAE, XVI By LYMAN B. SMITH mw UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1951 For sale by tbe Superintendent of Documents, U. S. Government Printing Office Wtdiington 25, D. C. * Price 50 cent* BULLETIN OF THE UNITED STATES NATIONAL MUSEUM n PREFACE This paper, by Lyman B. Smith, associate curator of the Department of Botany, U. S. National Herbarium, is the sixteenth of his series of studies of the family Bromeliaceae, the fifteenth having been pub- lished as volume 29, part 7, in the "Contributions from the United States National Herbarium." The first part of the paper contains a miscellany of noteworthy records, including 14 new species. The second part is a continuation of a synopsis of the Tillandsieae and includes two new species. All new species are illustrated. Jason R. Swallen, Head Curator, Department of Botany, United States National Museum. in CONTENTS Page Introduction 429 Preliminary notes___ 429 Species of Mexico 430 Species of Colombia 432 Species of Ecuador 445 Species of Peru 447 Species of northern South America 447 Synopsis of the tribe Tillandsieae, Part 4 (descriptive list with key) 448 Index vii ILLUSTRATIONS Figure 37. Aechmea matudai 430 38. Pitcairnia calopkylla 432 39. Pitcairnia petraea 433 40. Pitcairnia similis 434 41. Tillandsia acuminata and Tillandsia arcuans 435 42. Tillandsia brevior and Tillandsia chartacea 437 43. Tillandsia ftisiformis 438 44. Tillandsia racinae and Tillandsia sigmoidea 440 45. Tillandsia suescana and Tillandsia ultima 442 46. Vriesia cylindrica 446 47.
    [Show full text]