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BEYOND THE
 CJBG
Plants and theater
 Plants and theater
 The CJBG's Versailles
 planters move to the
 Théâtre de l'Orangerie
 July 2- September 27
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Post Facebook THE GARDEN'S  SECRETS
Learn more about the pollination mechanism of Strelitzia reginae
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NEWS
Radio Cité
 Radio Cité - Podcast
 End of confinement and
 presentation of the
 exhibition "The rise of
 invasive neophytes",  with director, Pierre-
 André Loizeau
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Radio Lac
 Radio Lac - Podcast
 Introduction to the CJBG
 and to some invasive
 species, with director
 Pierre-André Loizeau
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Cult.ge
 Cult.ge
 Presentation of the
 exhibition "The rise of
 invasive neophytes",  with director, Pierre-
 André Loizeau
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Plan Biodiversité 2020-2023
 The 2020-2023 Biodi-
 versity Plan approuved
 by the State Council.
 The CJBG greatly
 contributed to the
 objectives' definition
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Tribune de Genève 06.06.2020
 La Tribune de Genève
 Learn more about
 invasive exotic plants
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Agro-environmental networks
 Genève Grandeur
 Nature
 Agro-environmental
 networks
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THE HESPERIDES'
 TREASURE
Symboles & Sentiments
Interactive & multimedia
 fiction !

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Botanica - invasive neophytes
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REOPENING
Bon Retour Chez Nous
WELCOME BACK !
Learn more HERE...
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EVENTS
This summer rhymes with concerts!
This summer rhymes with concerts!
Live from the CJBG's lawn!
Every Wednesday and Friday
From July 6 to August 28
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From garden to garden with the BM - 4th edition
From garden to garden with the BM - 4th edition
Join the Mobithèque near the Temperate Grenhouse
From July 15 to July 26
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EXHIBITIONS
Botanica - invasive neophytes
BOTANICA: The rise of invasive neophytes
Plane tree Walkway
From June 13 to October 18
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Carl von Martius Exhibition
Carl von Martius: discovering tropical biodiversity
In the CJBG Library
Until Decembre 24th
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FAMILY ACTIVITIES
Hors-murs bibliothèque - Martius
The Library heads outside
Come and learn more about Martius!
On the library's doorsteps
July 29, August 5, 12 and 19 from noon to 4pm
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Extraordinary Trails
The extraordinary Trails
A new historical fiction
Join the adventure HERE!
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Botany Cultural Trail
The "Botany" Cultural Trail
To discover the botany in Geneva since the 18th century
The visit begins HERE!
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GUIDED TOURS
GUIDED TOURS
All guided tours are cancelled until further notice. Thank you for your understanding.
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VISIT THE GREENHOUSES
tropical greenhouse
Presentation of the tropical greenhouse (run time: 1'30)
For your safety, please follow the instructions in effect
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ombrage

Conservatoire et Jardin botaniques de la Ville de Genève


WelcomeScientific Activities ResearchersP. Clerc
impression
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Philippe Clerc

clerc

Conservateur, Dr ès Sc.
Responsable de l'herbier de Cryptogamie
Chargé de cours à l'Université

CJBG

Conservatoire et Jardin botaniques
Ch. de l'Impératrice 1
CP 71 CH-1292 Chambésy, Genève
Switzerland
Tél. (+41) 22 418 51 28
Fax (+41) 22 418 51 01

Email

Domaines de recherches et intérêts scientifiques
Systématique des lichens
Flore régionale des lichens
Mycologie générale
Lichens terricoles de Suisse
Genres Usnea et Parmelia
Bioindication
Nature en ville

Projets de recherches
Systématique du genre Usnea (ascomycètes lichénisés)
Révision du genre Usnea en Suisse
Révision du genre Usnea en Macaronésie
Révision du genre Usnea en Amérique du Nord
Monographie du genre Usnea dans la zone néotropicale

Liste sélective de publications

CLERC, P. (2016). Notes on the genus Usnea Adanson (lichenized Ascomycota). IV. Herzogia 29: 403-411.

TRUONG, C. & P. CLERC (2016). New species and new records in the genus Usnea (Parmeliaceae, lichenized Ascomycota) from tropical South America. The Lichenologist 48:71-93.

BOOM, P. P. G., P. CLERC & D. ERTZ (2015). New records of lichens and lichenicolous fungi from La Gomera (Canary Islands), including the new species: Usnea boomiana P. Clerc. Candollea 70: 165-177.

BOOM, VAN DEN P.G. & P. CLERC (2015). Further new or interesting lichens and lichenicolous fungi from Gran Canaria (Canary Islands, Spain). Österr. Z. Pilzk. 24: 1–8.

Divakar, P. K., Crespo, A., Wedin, M. […], P. CLERC, […], & T. Lumbsch (2015). Evolution of complex symbiotic relationship in a morphologically derived family of lichen-forming fungi (2015). New Phytologist 208:1217-1226.

VUST, M., CLERC, P., HABASHI, C. & MERMILLOD, J.-C. (2015). Lichen Inventory of the Canton of Geneva, Switzerland – Large Biodiversity for a small Canton. Herzogia 28: 153–184.

PERLMUTTER, G. G., TUCKER, S. C., PLATA, R., CLERC, P. & LÜCKING, R. (2015). Melaspilea demissa (Tuck.) Zahlbr. (lichenized Ascomycota) in eastern North America with a key to North American species of Melaspilea s. lat. The Lichenologist 47: 167–182.

VUST, M., CLERC, P., HABASHI, C. & MERMILLIOD, J.-C. (2015). Liste rouge des lichens du canton de Genève. Hors-série no 16. Conservatoire et Jardin botaniques de la Ville de Genève.

ROUX, C., MONNAT, J.-Y. (collab.), VAN HALUWYN, C. (collab.), […], CLERC, P. (collab.), […].& HAIRIE, F. (collab.) (2014). Catalogue des lichens et champignons lichénicoles de France métropolitaine. Association française de lichénologie. Editions d’Art - Henry des Abbayes. 1525 p.

MOMBRIAL, F., B. BÄUMLER, P. CLERC, C. HABASHI, H. HINDEN, C. LAMBELET-HAUETER, P. MARTIN, M. PRICE & R. PALESE (2013). Flore en Ville – Sites et espèces d'intérêt en Ville de Genève - Plantes à fleurs, fougères, mousses, lichens. Hors-série n.15. Conservatoire et Jardin botaniques de la Ville de Genève.

BREUSS, O. & P. CLERC (2013). Erstnachweise und weitere bemerkenswerte Funde pyrenocarper Flechten in der Schweiz. Österr. Z. Pilzk. 22: 93-98.

OTTE, V., L. YAKOVCHENKO, P. CLERC & M. WESTBERG (2013). Candelariella commutata sp. nov. for C. unilocularis auct. Medioeur. – an arctic-alpine lichen on calcareous substrata from the Caucasus and Europe. Herzogia 26: 217-222.

TRUONG, C. & P. CLERC (2013). Eumitrioid Usnea species (Parmeliaceae, lichenized Ascomycota) in tropical South America and the Galapagos. Lichenologist 45: 383-395.

TRUONG, C. J. M. RODRIGUEZ & P. CLERC (2013). Pendulous Usnea species (Parmeliaceae, lichenized Ascomycota) in tropical South America and the Galapagos. Lichenologist 45: 1-39.

TRUONG, C.,DIVAKAR, P. K., YAHR, R.. CRESPO, A. & P. CLERC (2013).Testing the use of ITS rDNA and protein-coding genes in the generic and species delimitation of the lichen genus Usnea (Parmeliaceae, Ascomycota). Molecular Phylogenetics and Evolution 68: 357–372.

DILLMAN, K. L., T. AHTI, C. R. BJÖRK, P. CLERC, S. EKMAN, T. GOWARD, J. HAFELLNER, S. PEREZ-ORTEGA, C. PRINTZEN, S. SAVIC, M. SCHULTZ, M. SVENSSON, G. THOR, T. TONSBERG, O. VITIKAINEN, M. WESTBERG & T. SPRIBILLE (2012). New records, range extensions and nomenclatural innovations for lichens and lichenicolous fungi from Alaska, U.S.A. Herzogia 25: 177-210.

TRUONG, C. & P. CLERC (2012). The lichen genus Usnea (Parmeliaceae) in the tropical South America: species with a pigmented medulla, reacting C+ yellow. Lichenologist 44: 625-637.

WESTBERG, M. & P. CLERC (2012). Five species of Candelaria and Candelariella (Ascomycota, Candelariales) new to Switzerland MycoKeys 3: 1-12.

TRUONG, C., F. BUNGARTZ & P. CLERC (2011). The lichen genus Usnea (Parmeliaceae) in the tropical Andes and the Galapagos : species with a red-orange cortical or subcortical pigmentation. Bryologist, 114: 504-525.

RODRIGUEZ, J. M., C. ESTRABOU, C. TRUONG & P. CLERC (2011). The saxicolous species of the genus Usnea subgenus Usnea (Parmeliaceae) in Argentina and Uruguay. Bryologist, 114: 477-503.

CLERC, P. (2011). Notes on the genus Usnea Adanson (lichenized Ascomycota). III. Bibliotheca Lichenologica 106: 41-51.

CLERC, P. (2011). Usnea. - in A. Thell & R. Moberg (eds). Nordic Lichen Flora: 4: 107-127.

GIRALT, M. & P. CLERC (2011). Tetramelas thiopolizus nov. comb. with a key to all known species of Tetramelas. 18th Symposium on Cryptogamic Botany - 13-16 juillet 2011, Abstract Book: 99.

GIRALT, M. & P. CLERC (2011). Tetramelas thiopolizus comb. nov. with a key to all known species of Tetramelas. The Lichenologist 43: 417–425.

LUMBSCH ET AL. (103 auteurs dont P. Clerc). (2011). One hundred new species of lichenized fungi: a signature of undiscovered global biodiversity. Phytotaxa 18: 1-127.

CLERC, P. (2010). Flechten, p. 234-236. In: Lachat, T., Pauli, D, Gonseth, Klaus, G., Scheidegger, C., Vittoz, P. & Walter T. (Reds). Wandel der Biodiversität in der Schweiz seit 1900. Ist die Talsohle erreicht? Zürich, Bristol-Schriftung; Bern, Stuttgart, Wien, Haupt.

CLERC, P. & C. TRUONG (2010). Catalogue des lichens de Suisse. http://www.ville-ge.ch/musinfo/bd/cjb/cataloguelichen [Version 1.0, 01.03.2010].

CLERC, P. (2009). Deuxième complément au Catalogue des lichens de Suisse. Meylania 42:7-14.

TRUONG, C, Y. NACIRI & P. CLERC (2009). Multivariate analysis of anatomical characters confirms the differentiation of two morphologically close species, Melanohalea olivacea (L.) O. Blanco et al. and M. septentrionalis (Lynge) O. Blanco et al. Lichenologist 41:649-661.

CLERC, P. & C. TRUONG (2008). The non-sorediate and non-isidiate Parmelina species (lichenized ascomycetes, Parmeliaceae) in Switzerland - Parmelina atricha (Nyl.) P. Clerc reinstated in the European lichen flora. Sauteria 15: 175-194.

CLERC, P. & C. TRUONG (2008). Un projet de Flore numérique des lichens de Suisse (FNLS). Meylania 40: 21-28.

CLERC, P. (2007). Usnea, p. 302-335. In Nash III, T., C. Gries & F. Bungartz (eds). Lichen Flora of the Greater Sonoran Desert Region. Volume 3. USA. Dexter. MI.

BEAUCHAMP, H., M. VUST & P. CLERC (2007). Notes on selected terricolous crustaceous lichens of Switzerland: Distributional, ecological and Red List data. Herzogia 20: 115-144.

CLERC, P. (2006). Parmelia afrorevoluta et P. britannica: deux nouvelles espèces de macrolichens pour la Suisse: une redéfinition de Parmelia revoluta! Meylania 35: 7-15.

CLERC, P. (2006). Synopsis of Usnea (lichenized Ascomycetes) from the Azores with additional information on the species in Macaronesia. Lichenologist 38: 191-212.

CLERC, P. & P. F. MAY (2006). Usnea flammea (Lecanorales) new for North America. The Bryologist 110: 126-128.