Where to find the exhibition room «Cabinet de curiosités» and the exhibit The multiple lives of herbaria Lucy will take you to explore the fabulous world of herbaria. During the journey, she will ask you a few questions. In case of extreme urgency only, you can find the answers at the end of the booklet. This activity booklet is to be completed jointly by youngsters and older ones as a family activity. It is available at the Botanic Shop. The texts of the exhibition can be viewed on the following web page: http://www.ville-ge.ch/cjb/cdec.php 1 It’s amazing! Take a look at the herbarium specimen Lucy took out of the herbarium in Geneva. She needs to redo the labels. To help her, find the specimen in the exhibit, compare labels and copy the missing information. 2 A herbarium is… An underground field where farmers grow grass A collection of dried plant specimens mounted on card stock A kitchen shelf where aromatic herbs are kept The herbaria of the CJBG grow over time, because botanists around the world have been collecting plants for years and gathering their specimens in the great international herbaria. Watch the video which introduces some of the past and present plant collectors who have contributed to this immense endeavor. 3 You can make your own herbarium at home, like Lucy. It’s important that you read all the instructions in order to succeed ! • Before collecting anything, make sure the plant is neither rare nor protected. • Write down in a notebook the colors of the living plant, its flowers and fruits, depending on the season. You can also take a picture. • Collect the plants with shears or scissors. Place each one in a plastic bag, along with a tag with your name, the date and location of the collection written in pencil. • Dry the specimens between sheets of absorbent paper (e.g. newspaper), placed all together under some heavy books. The papers should be changed every day for the samples to dry completely. • Mount each dry specimen on card stock with adhesive tape, along with a tag specifying the plant’s name, the place where it was collected and date as well as your name. Your specimen is ready! • Classify the samples alphabetically Derived from an exhibition at the Paris botanical garden, MNHN, Paris 4 HINT: you will find the answers in the cartoon of Lucy shown in the “First life of herbaria” panel of the exhibition. 1. It’s important to keep recent specimens, but also … ones. 2. Lucy opens up the herbarium to all, then throws something to the trash. 3. The specimens are all gathered in the same place. 4. Lucy organizes the herbarium specimens in a very specific order. 5. Lucy dries her specimen with a welladapted object. 5 Lucy brought a rather strange machine to the exhibition: a kind of big metal box on wheels. Find it and write down its name: It’s a This machine scans herbarium specimens. It can take high resolution pictures of the plants. These then can be viewed on a computer or published on internet. To see one of these pictures, go to the page www.villege.ch/musinfo/bd /cjb/chg, and type in the name Helianthus annuus. Click on the picture and use the zoom at your disposal to look at the specimen up close. 6 Find the UV lamp and observe the lichens inside. Their bright colors are due to the molecules that react to UV light. Which colors do you see? Here are some objects used to analyze these molecules. Link up the names to the corresponding objects: Micropipettes Chromatography tank Binocular lens 1 2 3 7 Botanists collect plants all over the world! What type of research do they do and what is it used for ? Here are some questions to guide you. Look for hints on the exhibit posters. 1. Where does this plant grow? Capurodendron greveanum 2. Cotula coronopifolia is a plant originating from ……………… ? 3. Did Silene gigantea already grow in Greece two million years ago ? 8 In the showcase, look for the herbarium specimen of Hedyotis adscencionis. Observe it closely because it is unique! This specimen is one of the only remaining traces of this species on Earth. Lysimachia minoricensis is a plant that has disappeared from its natural habitat. Its species is preserved alive in cultivation. What country does it come from ? So, what do you think ? True or False ? In the herbarium of Geneva, there are : - Specimens of invasive species - Specimens of plants that have disappeared from their natural habitat - Plants collected long ago - Plants from which one can extract DNA 9 10 11 p.2 TYPUS p.3 What is a herbarium ? A collection of dried plant specimens mounted on card stock p.5 Crosswords : 1. Old - 2. Lock - 3. Herbarium - 4. Alphabetical 5. Press p.6 This machine is an herbscan p.7 1. Chromatography tank, 2. Micropipettes, 3. Binocular lens p.8 1. It grows in Madagascar 2. It comes from South Africa 3. No, it is estimated to have appeared between -1.5 et -1 million years ago p.9 true – true – true – true 12 Director Pierre-André Loizeau Authors Rhéa Garratt, Magali Stitelmann Drawings Maud Oïhénart Map Nicolas Wyler Translation Rhéa Garratt Exhibition curators Yamama Naciri, Laurent Gautier Reading committee Philippe Clerc, Fred Stauffer, Louis Nusbaumer, Daniel Hoffman Printing Centrale municipale d’achats et d’impression CMAI Conservatoire et Jardin botaniques de Genève, March 2017 16
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