Report of a Working Group on Grain Legumes: Third Meeting
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The Plant Press
Department of Botany & the U.S. National Herbarium The Plant Press New Series - Vol. 17 - No. 1 January-March 2014 Botany Profile Research Scientist Spills the Beans By Gary A. Krupnick magine starting a new job by going population genetics to phylogenetics and rial of Psoraleeae and soybean (Glycine away on a three-month field excur- systematics. max). In 2007, Egan became a postdoc- sion to the remote forests of China, n 2001 she began her graduate years toral research associate in Doyle’s lab, I studying the phylogenetic systematics Japan, and Thailand after only two weeks at Brigham Young University, initially on the job, before having a chance to set- working on a doctoral thesis in cancer of subtribe Glycininae (Leguminosae). tle into your new office and unpack your I Egan’s research has determined that research. Her preliminary studies utilized boxes. Continue imagining that while phylogenetics as a means of bioprospect- tribe Psoraleeae is nested within subtribe you are away on your Asian expedition, ing, looking at the chemopreventive ability Glycininae, and is a potential progenitor you find out that your employer, the U.S. and phenolic content of the mint family, genome of the polyploid soybean. federal government, has shut down for 16 Lamiaceae. Unsatisfied with the direc- During her postdoctoral research, days, forcing you into “furlough in place” tion of her thesis, Egan switched to Keith Egan began collaborating with several status (non-duty and non-pay). Such is Crandall’s invertebrate biology laboratory, scientists studying soybean genome evo- the life of Ashley N. Egan, the Depart- with the understanding that Egan would lution. -
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. -
Machaerium Meridanum Meléndez (Fabaceae, Papilionoideae, Dalbergieae), a New Species from Venezuela
Machaerium meridanum Meléndez (Fabaceae, Papilionoideae, Dalbergieae), a new species from Venezuela Pablo Meléndez González & Manuel B. Crespo Abstract Résumé MELÉNDEZ GONZÁLEZ, P. & M. B. CRESPO (2008). Machaerium meri- MELÉNDEZ GONZÁLEZ, P. & M. B. CRESPO (2008). Machaerium danum Meléndez (Fabaceae, Papilionoideae, Dalbergieae), a new species from meridanum Meléndez (Fabaceae, Papilionoideae, Dalbergieae), une nouvelle Venezuela. Candollea 63: 169-175. In English, English and French abstracts. espèce du Vénézuéla. Candollea 63: 169-175. En anglais, résumés anglais et The new species Machaerium meridanum Meléndez (Fabaceae, français. Papilionoideae, Dalbergieae) is described on the foothills of the La nouvelle espèce Machaerium meridanum Meléndez (Faba - Andean Cordillera of Mérida in western Venezuela. The species ceae, Papilionoideae, Dalbergieae) est décrite au pied de la is morphol ogically most similar to Machaerium acuminatum Cordillère des Andes de Mérida, à l’ouest du Vénézuela. Cette Kunth and Machaerium acutifolium Vogel, from which it espèce est proche morpho logiquement de Machaerium acumi- differs in the shape and number of leaflets, its subpedicellate natum Kunth et de Macha erium acutifolium Vogel, dont elle flowers, and some features of the fruit. Its taxonomic affinites diffère par la forme et le nombre de folioles, ses fleurs subpédi- are discussed. An illustration, a map, and a key to identify the cellées et quelques traits de ses fruits. Ses affinités taxonomiques Venezuelan species of Machaerium sect. Reticulata (Benth.) sont discutées. Une illustration, une carte et une clé d’identifi- Taub. are also included. cation sont données pour identifier les espèces vénézuéliennes de Machaerium sect. Reticulata (Benth.) Taub. Key-words FABACEAE – Machaerium – Venezuela – Taxonomy Addresses of the authors: PMG: Herbario MERF, Facultad de Farmacia, Universidad de Los Andes, Apartado 5101, Mérida, Venezuela. -
Illustrated Flora of East Texas Illustrated Flora of East Texas
ILLUSTRATED FLORA OF EAST TEXAS ILLUSTRATED FLORA OF EAST TEXAS IS PUBLISHED WITH THE SUPPORT OF: MAJOR BENEFACTORS: DAVID GIBSON AND WILL CRENSHAW DISCOVERY FUND U.S. FISH AND WILDLIFE FOUNDATION (NATIONAL PARK SERVICE, USDA FOREST SERVICE) TEXAS PARKS AND WILDLIFE DEPARTMENT SCOTT AND STUART GENTLING BENEFACTORS: NEW DOROTHEA L. LEONHARDT FOUNDATION (ANDREA C. HARKINS) TEMPLE-INLAND FOUNDATION SUMMERLEE FOUNDATION AMON G. CARTER FOUNDATION ROBERT J. O’KENNON PEG & BEN KEITH DORA & GORDON SYLVESTER DAVID & SUE NIVENS NATIVE PLANT SOCIETY OF TEXAS DAVID & MARGARET BAMBERGER GORDON MAY & KAREN WILLIAMSON JACOB & TERESE HERSHEY FOUNDATION INSTITUTIONAL SUPPORT: AUSTIN COLLEGE BOTANICAL RESEARCH INSTITUTE OF TEXAS SID RICHARDSON CAREER DEVELOPMENT FUND OF AUSTIN COLLEGE II OTHER CONTRIBUTORS: ALLDREDGE, LINDA & JACK HOLLEMAN, W.B. PETRUS, ELAINE J. BATTERBAE, SUSAN ROBERTS HOLT, JEAN & DUNCAN PRITCHETT, MARY H. BECK, NELL HUBER, MARY MAUD PRICE, DIANE BECKELMAN, SARA HUDSON, JIM & YONIE PRUESS, WARREN W. BENDER, LYNNE HULTMARK, GORDON & SARAH ROACH, ELIZABETH M. & ALLEN BIBB, NATHAN & BETTIE HUSTON, MELIA ROEBUCK, RICK & VICKI BOSWORTH, TONY JACOBS, BONNIE & LOUIS ROGNLIE, GLORIA & ERIC BOTTONE, LAURA BURKS JAMES, ROI & DEANNA ROUSH, LUCY BROWN, LARRY E. JEFFORDS, RUSSELL M. ROWE, BRIAN BRUSER, III, MR. & MRS. HENRY JOHN, SUE & PHIL ROZELL, JIMMY BURT, HELEN W. JONES, MARY LOU SANDLIN, MIKE CAMPBELL, KATHERINE & CHARLES KAHLE, GAIL SANDLIN, MR. & MRS. WILLIAM CARR, WILLIAM R. KARGES, JOANN SATTERWHITE, BEN CLARY, KAREN KEITH, ELIZABETH & ERIC SCHOENFELD, CARL COCHRAN, JOYCE LANEY, ELEANOR W. SCHULTZE, BETTY DAHLBERG, WALTER G. LAUGHLIN, DR. JAMES E. SCHULZE, PETER & HELEN DALLAS CHAPTER-NPSOT LECHE, BEVERLY SENNHAUSER, KELLY S. DAMEWOOD, LOGAN & ELEANOR LEWIS, PATRICIA SERLING, STEVEN DAMUTH, STEVEN LIGGIO, JOE SHANNON, LEILA HOUSEMAN DAVIS, ELLEN D. -
Vascular Plants of Santa Cruz County, California
ANNOTATED CHECKLIST of the VASCULAR PLANTS of SANTA CRUZ COUNTY, CALIFORNIA SECOND EDITION Dylan Neubauer Artwork by Tim Hyland & Maps by Ben Pease CALIFORNIA NATIVE PLANT SOCIETY, SANTA CRUZ COUNTY CHAPTER Copyright © 2013 by Dylan Neubauer All rights reserved. No part of this publication may be reproduced without written permission from the author. Design & Production by Dylan Neubauer Artwork by Tim Hyland Maps by Ben Pease, Pease Press Cartography (peasepress.com) Cover photos (Eschscholzia californica & Big Willow Gulch, Swanton) by Dylan Neubauer California Native Plant Society Santa Cruz County Chapter P.O. Box 1622 Santa Cruz, CA 95061 To order, please go to www.cruzcps.org For other correspondence, write to Dylan Neubauer [email protected] ISBN: 978-0-615-85493-9 Printed on recycled paper by Community Printers, Santa Cruz, CA For Tim Forsell, who appreciates the tiny ones ... Nobody sees a flower, really— it is so small— we haven’t time, and to see takes time, like to have a friend takes time. —GEORGIA O’KEEFFE CONTENTS ~ u Acknowledgments / 1 u Santa Cruz County Map / 2–3 u Introduction / 4 u Checklist Conventions / 8 u Floristic Regions Map / 12 u Checklist Format, Checklist Symbols, & Region Codes / 13 u Checklist Lycophytes / 14 Ferns / 14 Gymnosperms / 15 Nymphaeales / 16 Magnoliids / 16 Ceratophyllales / 16 Eudicots / 16 Monocots / 61 u Appendices 1. Listed Taxa / 76 2. Endemic Taxa / 78 3. Taxa Extirpated in County / 79 4. Taxa Not Currently Recognized / 80 5. Undescribed Taxa / 82 6. Most Invasive Non-native Taxa / 83 7. Rejected Taxa / 84 8. Notes / 86 u References / 152 u Index to Families & Genera / 154 u Floristic Regions Map with USGS Quad Overlay / 166 “True science teaches, above all, to doubt and be ignorant.” —MIGUEL DE UNAMUNO 1 ~ACKNOWLEDGMENTS ~ ANY THANKS TO THE GENEROUS DONORS without whom this publication would not M have been possible—and to the numerous individuals, organizations, insti- tutions, and agencies that so willingly gave of their time and expertise. -
Washington Flora Checklist a Checklist of the Vascular Plants of Washington State Hosted by the University of Washington Herbarium
Washington Flora Checklist A checklist of the Vascular Plants of Washington State Hosted by the University of Washington Herbarium The Washington Flora Checklist aims to be a complete list of the native and naturalized vascular plants of Washington State, with current classifications, nomenclature and synonymy. The checklist currently contains 3,929 terminal taxa (species, subspecies, and varieties). Taxa included in the checklist: * Native taxa whether extant, extirpated, or extinct. * Exotic taxa that are naturalized, escaped from cultivation, or persisting wild. * Waifs (e.g., ballast plants, escaped crop plants) and other scarcely collected exotics. * Interspecific hybrids that are frequent or self-maintaining. * Some unnamed taxa in the process of being described. Family classifications follow APG IV for angiosperms, PPG I (J. Syst. Evol. 54:563?603. 2016.) for pteridophytes, and Christenhusz et al. (Phytotaxa 19:55?70. 2011.) for gymnosperms, with a few exceptions. Nomenclature and synonymy at the rank of genus and below follows the 2nd Edition of the Flora of the Pacific Northwest except where superceded by new information. Accepted names are indicated with blue font; synonyms with black font. Native species and infraspecies are marked with boldface font. Please note: This is a working checklist, continuously updated. Use it at your discretion. Created from the Washington Flora Checklist Database on September 17th, 2018 at 9:47pm PST. Available online at http://biology.burke.washington.edu/waflora/checklist.php Comments and questions should be addressed to the checklist administrators: David Giblin ([email protected]) Peter Zika ([email protected]) Suggested citation: Weinmann, F., P.F. Zika, D.E. Giblin, B. -
Chloroplast Dna Characters, Phylogeny, and Classification of Lathyrus (Fabaceae)1
American Journal of Botany 85(3): 387–401. 1998. CHLOROPLAST DNA CHARACTERS, PHYLOGENY, AND CLASSIFICATION OF LATHYRUS (FABACEAE)1 CONNY B. ASMUSSEN2,3 AND AARON LISTON2 Department of Systematic Botany, Institute of Biological Sciences, University of Aarhus, Nordlandsvej 68, 8240 Risskov, Denmark; and 2 Department of Botany and Plant Pathology, 2082 Cordley Hall, Oregon State University, Corvallis, Oregon 97331–2902 Mapped cpDNA restriction site characters were analyzed cladistically and the resulting phylogenetic hypotheses were used to test monophyly and relationships of the infrageneric classification of Lathyrus (Fabaceae) proposed by Kupicha (1983, Notes from the Royal Botanic Garden Edinburgh 41: 209–244). The validity of previously proposed classification systems and questions presented by these classification schemes were explored. Two cpDNA regions, rpoC(rpoC1, its intron, part of rpoC2, and their intergenic spacer) and IRϪ (psbA, trnH-GUG, part of ndhF, and their intergenic spacers), were analyzed for 42 Lathyrus and two Vicia species. PCR (polymerase chain reaction) amplified rpoC and IRϪ products digested with 31 and 27 restriction endonucleases, respectively, resulted in 109 potentially informative characters. The strict consensus tree suggests that several of Kupicha’s sections may be combined in order to constitute clades. The widespread section Orobus and the South American section Notolathyrus should be combined. Section Lathyrus, characterized by a twisted style, should either include sections Orobon and Orobastrum or be redefined as three sections, one of which is characterized by a 100 base pair deletion in the IRϪ region. Finally, a weighted parsimony analysis positions sections Clymenum (excluding L. gloeospermus) and Nissolia, both with phyllodic leaves, as sister sections. -
INTRODUCTION This Check List of the Plants of New Jersey Has Been
INTRODUCTION This Check List of the Plants of New Jersey has been compiled by updating and integrating the catalogs prepared by such authors as Nathaniel Lord Britton (1881 and 1889), Witmer Stone (1911), and Norman Taylor (1915) with such other sources as recently-published local lists, field trip reports of the Torrey Botanical Society and the Philadelphia Botanical Club, the New Jersey Natural Heritage Program’s list of threatened and endangered plants, personal observations in the field and the herbarium, and observations by other competent field botanists. The Check List includes 2,758 species, a botanical diversity that is rather unexpected in a small state like New Jersey. Of these, 1,944 are plants that are (or were) native to the state - still a large number, and one that reflects New Jersey's habitat diversity. The balance are plants that have been introduced from other countries or from other parts of North America. The list could be lengthened by hundreds of species by including non-persistent garden escapes and obscure waifs and ballast plants, many of which have not been seen in New Jersey since the nineteenth century, but it would be misleading to do so. The Check List should include all the plants that are truly native to New Jersey, plus all the introduced species that are naturalized here or for which there are relatively recent records, as well as many introduced plants of very limited occurrence. But no claims are made for the absolute perfection of the list. Plant nomenclature is constantly being revised. Single old species may be split into several new species, or multiple old species may be combined into one. -
Flowering Plants
RYE HARBOUR FAUNA & FLORA The Flowering Plants The FLOWERING PLANTS of Rye Harbour RYE HARBOUR FAUNA & FLORA The Flowering Plants RYE HARBOUR FAUNA & FLORA The Flowering Plants The Flowering Plants of Rye Harbour Rye Harbour Fauna and Flora Volume 2 by Barry Yates Dedicated to the memory of Breda Burt (1918–2001) She was the major contributor to our knowledge of the flora of Rye Harbour and a good friend of the Nature Reserve. Published by East Sussex County Council and The Friends of Rye Harbour Nature Reserve Rye Harbour Nature Reserve 2 Watch Cottages Winchelsea, East Sussex TN36 4LU [email protected] www.wildRye.info March 2007 ISBN no: 0-86147-414-7 (cover photo Sussex Wildlife Trust, map by Angel Design, illustrations by Dr Catharine Hollman, photos by Dr Barry Yates) RYE HARBOUR FAUNA & FLORA The Flowering Plants Map of the Rye Harbour area RYE HARBOUR FAUNA & FLORA The Flowering Plants Contents Front Cover Marshmallow growing at Castle Farm Map of the Rye Harbour area opposite Introduction 1 Visiting 2 Flowering Plants 3 Magnoliidae - the dictotyledons (with two seed leaves - 343 species) Nymphaeaceae – the water lily family (2 species) 4 Ceratophyllaceae – the hornwort family (2 species) 4 Ranunculaceae – the buttercup family (12 species) 4 Papaveraceae – the poppy family (3 species) 5 Fumariaceae – the fumitory family (1 species) 6 Urticaceae – the nettle family (3 species) 6 Fagaceae – the oak family (1 species) 6 Betulaceae - the birch family (2 species) 6 Chenopodiaceae – the goosefoot family (18 species) 6 Portulacaceae – the purslane family (2 species) 7 Caryophyllaceae – the campion family (24 species) 8 Polygonaceae – the dock family (16 species) 9 Plumbaginaceae– the thrift family (2 species) 11 Clusiaceae– the St. -
A Systematic Study of Lathyrus Vestitus Nutt. Ex T
AN ABSTRACT OF THE THESIS OF Steven Leo Broich for the degree of Doctor of Philosophy in Botany and Plant Pathologypresented on 4 March 1983 Title: A SYSTEMATIC STUDY OF LATHYRUS VESTITUS NUTT. EX T. & G. (FABACEAE) AND ALLIED SPECIES OF THE PACIFIC COAST Abstract approved: Redacted for Privacy Kenton L.Chdbers Eight species of Lathvrus (Fabaceae, Faboideae) endemic to the Pacific Coast of North America were the subject of a systematic investigation. Taxa studied included Lathvrus vestituq Nutt. ex T. & G., L. .1aetiflorus Greene, Lo iepsonii Greene, L. splendens Kellogg, L. polv-chvllus Nutt. ex T. & G., L. holochlorus (Piper) C. L. Hitchcock, L. delnorticus C. L. Hitchcock and L. sulphureus Brewer. Taximetric studies, including hierarchical and non-hierarchical cluster analyses followed by discriminant analyses, revealed the existence of one new species. Lathvrus holochlorus, Lo delnorticus, L. sulphureus, L. Polviohvllus, L. iepsonii and L. splendens were found to be morphologically distinct while extensive morphological intergradation was found between J. vestitus and L. laetiflorus. Principal Components analysis was used to document two clinal trends within the L. vestitus-laetiflorus complex. Flower size increases and floral shape changes from north to south along the Pacific Coast; pubescence increases clinally from north to south and from the coast inland. The anatomy of stems and leaflets was examined by tissue clearing methods. Vascular anatomy of nodes and internodes was found to conform to patterns described previously for European species of Lathvrus. Epidermal cell shape and stomatal frequency on leaflets varies greatly within species and these data were not useful for taxonomic distinctions. The diploid chromosome number for all species studied was found to be 2n = 14; only small differences in karyotypes could be noted. -
A Single Evolutionary Innovation Drives the Deep Evolution of Symbiotic N2-Fixation in Angiosperms
ARTICLE Received 4 Feb 2014 | Accepted 9 May 2014 | Published 10 Jun 2014 DOI: 10.1038/ncomms5087 OPEN A single evolutionary innovation drives the deep evolution of symbiotic N2-fixation in angiosperms Gijsbert D.A. Werner1, William K. Cornwell1,w, Janet I. Sprent2, Jens Kattge3,4 & E. Toby Kiers1 Symbiotic associations occur in every habitat on earth, but we know very little about their evolutionary histories. Current models of trait evolution cannot adequately reconstruct the deep history of symbiotic innovation, because they assume homogenous evolutionary processes across millions of years. Here we use a recently developed, heterogeneous and quantitative phylogenetic framework to study the origin of the symbiosis between angio- sperms and nitrogen-fixing (N2) bacterial symbionts housed in nodules. We compile the largest database of global nodulating plant species and reconstruct the symbiosis’ evolution. We identify a single, cryptic evolutionary innovation driving symbiotic N2-fixation evolution, followed by multiple gains and losses of the symbiosis, and the subsequent emergence of ‘stable fixers’ (clades extremely unlikely to lose the symbiosis). Originating over 100 MYA, this innovation suggests deep homology in symbiotic N2-fixation. Identifying cryptic innovations on the tree of life is key to understanding the evolution of complex traits, including symbiotic partnerships. 1 Department of Ecological Science, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands. 2 Division of Plant Sciences, College of Life Sciences, University of Dundee at James Hutton Institute, Dundee DD2 5DA, UK. 3 Max Planck Institute for Biogeochemistry, Hans Knoell Strasse 10, 07743 Jena, Germany. 4 German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany. -
Le Genre Vicia L. En Algérie Caractérisation De 11 Taxa Naturels : Approches Éco-Géographique, Morphologique, Biochimique Et Moléculaire
République Algérienne Démocratique et Populaire Ministère de l’Enseignement Supérieur et de la Recherche Scientifique Université Frères MENTOURI Constantine Faculté des Sciences de la Nature et de la Vie Département de Biologie et Ecologie Végétale N° d’ordre : 79 / DS / 2017 Série : 10 / Eco / 2017 Thèse Présentée, en vue de l’obtention du Diplôme de Doctorat en Sciences Filière : Biotechnologies végétales Option : Biotechnologies végétales Thème Le genre Vicia L. en Algérie Caractérisation de 11 taxa naturels : Approches éco-géographique, morphologique, biochimique et moléculaire Présentée par : Sakina BECHKRI Soutenu le : 15 / 05 / 2017 Devant le jury : Présidente : Dalila SATTA ………………....................... Professeur. Université Frères MENTOURI Constantine Rapporteur : Douadi KHELIFI ………………................ Professeur. Université Frères MENTOURI Constantine Examinateur : Mohammed Abdelhafid HAMIDECHI… Professeur. Université Frères MENTOURI Constantine Examinateur : Miloud HAFSI …………………………. Professeur. Université Sétif 1 Examinateur : Abdelkrim MEBARKIA ……………….. Maître de Conférences. Université Sétif 1 Examinateur : Ammar MEBARKIA …………………... Maître de Conférences. Université Sétif 1 Année universitaire 2016 / 2017 Remerciements Au moment de commencer, la rédaction d'une thèse semble être une tâche longue et difficile. Heureusement, elle semblera moins intimidante après un ou deux chapitres. Vers la fin, nous y trouverons même du plaisir ; un plaisir fondé sur la satisfaction dans l'accomplissement et l'amélioration de notre rédaction scientifique. Arrivée au terme de cette thèse, je tiens à remercier toutes les personnes sans qui ce travail n’aurait pas été possible : Mes vifs remerciements s’adressent à mon Directeur de thèse et Directeur du laboratoire de Génétique Biochimie et Biotechnologies Végétales, Professeur Douadi KHELIFI. Il est bien difficile de mettre des mots pour qualifier l’ampleur de ma reconnaissance pour sa confiance et sa compréhension.