Conservatoire et Jardin botaniques de la Ville de Geneva

Genève, Switzerland

Conservatoire et Jardin botaniques de la Ville de Geneva

Genève, Switzerland
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Jeanmonod D.,Conservatoire et Jardin Botaniques de la Ville de Geneva | Charpin A.,Conservatoire et Jardin Botaniques de la Ville de Geneva
Candollea | Year: 2017

Emile Burnat (1828-1920) bequeathed his herbarium to the CJBG in 1911. It has been kept separate from the general collection G under the acronym G-BU. It consists of 1,572 boxes containing 219,843 specimens. It is divided into three parts : the European herbarium (1,169 boxes), the Maritime Alps herbarium (379 boxes) and the Thuret herbarium (24 boxes), also from the Maritime Alps. Burnat's personal collections and the ones of his collaborators reach 42,727 specimens and are mainly from the Maritime Alps, Switzerland and Corsica. The European herbarium is organized according to the Nyman Conspectus. The most original part is the Corsican collection (about 8,000 specimens), which served as a base for Briquet and Litardière's Prodrome de la Flore Corse. The herbarium of the Maritime Alps, including some 55,000 specimens, is organized according to the Flore des Alpes maritimes of Burnat. It represents the backbone of that work. The Thuret herbarium, given to Burnat in 1875, is organized according to the Flore analytique des Alpes maritimes of Ardoino. It contains about 3,500 specimens. The whole Burnat herbarium is in excellent condition, and therefore represents an heritage and a scientific interest of great value. © CONSERVATOIRE ET JARDIN BOTANIQUES DE GENÈVE 2017.


Price M.J.,Conservatoire et Jardin Botaniques de la Ville de Geneva | Hedderson T.A.,University of Cape Town
Candollea | Year: 2017

A revision of Grimmia Hedw. (Grimmiaceae) from South Africa and Lesotho based on specimens housed in BM, BOL, G, PRE, and STU, as well as type material from B, BM, BOL, FH, G, H-BR, H-SOL, NY, and PRE, is presented. Thirteen species are recognized for South Africa and Lesotho : Grimmia consobrina Müll. Hal., Grimmia donniana Sm., Grimmia elongata Kaulf., Grimmia fuscolutea Hook., Grimmia kidderi James, Grimmia laevigata (Brid.) Brid., Grimmia longirostris Hook., Grimmia Montana Bruch & Schimp., Grimmia orbicularis Wilson, Grimmia pulvinata (Hedw.) Sm., Grimmia pygmaea Müll. Hal., Grimmia sessitana De Not. and Grimmia tortuosa Hook. f. & Wilson. Keys based on morphological features, with an emphasis on costal characters, are provided. Each species is described and illustrated using key morphological and anatomical characters, such as transverse sections of leaves. Methods of specimen preparation are also explained and a glossary is supplied. Information on the geographical as well as altitudinal distribution of each species is given, with species distribution maps provided for the area covered by this study.


Jeanmonod D.,Conservatoire et Jardin Botaniques de la Ville de Geneva
Candollea | Year: 2017

The Geneva herbaria contain about 100,000 specimens collected in Corsica, resulting in the interest of the Geneva botanists, e.g. John Briquet (1870-1931) for this insular mountain. 40 % of the collections are represented in the institutional database, with 331 collectors, the most frequent being notably R. Deschâtres, J. Gamisans, and R. de Litardière. According to the database, the collection dates range from 1803 to 2015 with four major peaks during the 20th century. Ca. 250 types specimens are represented in Geneva. The geographical areas of the island are covered in a fairly homogeneous way, whereas the altitudinal belts from 0 to 100 m have the maximum coverage. All families and 95.7 % of specific and infraspecific taxa of native flora are present in the Geneva Corsican collections. Only 197 taxa of the wild flora of the island are absent, corresponding mainly to rare, very rare or extinct taxa. These are mostly xenophytes, generally subspontaneous. These herbaria contributed a paramount wealth of information to the knowledge of Corsican botany scattered in nine research fields : flora, taxonomy, cartography, historical data, recent plant invasions, future invasions scenarios, molecular systematics and population genetics, Red List, and high biodiversity areas. © CONSERVATOIRE ET JARDIN BOTANIQUES DE GENÈVE 2017.


Mathieu G.,Conservatoire et Jardin botaniques de la Ville de Geneva | Callmander M.W.,Conservatoire et Jardin botaniques de la Ville de Geneva
Candollea | Year: 2017

An upcoming taxonomic treatment accepts 60 species of Peperomia Ruiz & Pavón (Piperaceae) from the state of Veracruz in Mexico. A total of 19 species needed a nomenclatural act. Lectotypes of four species were designated previously and the remaining 15 species are lectotypified here. Each of them is discussed in detail. Ten of these species were described by Casimir de Candolle (1836-1918) and some comments on the G herbaria, housing most of Candolle's types, are provided.


Callmander M.W.,Conservatoire et Jardin botaniques de la Ville de Geneva | Buerki S.,Natural History Museum in London
Candollea | Year: 2016

Two new species of Benstonea Callm. & Buerki (Pandanaceae) are described from Sabah (Borneo, Malaysia). Benstonea fortuita Callm. & Buerki is only known from a small patch of forest in the southern tip of Crocker Range in the southwest of the state. It is diagnosed by its subacaulescent habit, its leaves abruptly attenuate at the apex and narrowing towards the base, and its solitary globose syncarp on a short peduncle. Benstonea serpentinica Callm. & Buerki is endemic to the ultramafic substrate of Mt. Silam in eastern part of the state ; it is diagnosed by its lateral plurisyncarpic infructescence, its peduncle covered with prophylls at base, and its stout acuminate style. Discussions on the morphological and molecular phylogenetic affinities of the new species are provided. Finally, both new species are assessed as "Critically Endangered" following IUCN Red List Categories and Criteria.


Perret M.,Conservatoire et Jardin botaniques de la Ville de Geneva | Chautems A.,Conservatoire et Jardin botaniques de la Ville de Geneva | De Araujo A.O.,Federal University of ABC | Salamin N.,University of Lausanne | Salamin N.,Swiss Institute of Bioinformatics
Botanical Journal of the Linnean Society | Year: 2013

Gesneriaceae are represented in the New World (NW) by a major clade (c. 1000 species) currently recognized as subfamily Gesnerioideae. Radiation of this group occurred in all biomes of tropical America and was accompanied by extensive phenotypic and ecological diversification. Here we performed phylogenetic analyses using DNA sequences from three plastid loci to reconstruct the evolutionary history of Gesnerioideae and to investigate its relationship with other lineages of Gesneriaceae and Lamiales. Our molecular data confirm the inclusion of the South Pacific Coronanthereae and the Old World (OW) monotypic genus Titanotrichum in Gesnerioideae and the sister-group relationship of this subfamily to the rest of the OW Gesneriaceae. Calceolariaceae and the NW genera Peltanthera and Sanango appeared successively sister to Gesneriaceae, whereas Cubitanthus, which has been previously assigned to Gesneriaceae, is shown to be related to Linderniaceae. Based on molecular dating and biogeographical reconstruction analyses, we suggest that ancestors of Gesneriaceae originated in South America during the Late Cretaceous. Distribution of Gesneriaceae in the Palaeotropics and Australasia was inferred as resulting from two independent long-distance dispersals during the Eocene and Oligocene, respectively. In a short time span starting at 34Mya, ancestors of Gesnerioideae colonized several Neotropical regions including the tropical Andes, Brazilian Atlantic forest, cerrado, Central America and the West Indies. Subsequent diversification within these areas occurred largely in situ and was particularly extensive in the mountainous systems of the Andes, Central America and the Brazilian Atlantic forest. Only two radiations account for 90% of the diversity of Gesneriaceae in the Brazilian Atlantic forest, whereas half of the species richness in the northern Andes and Central America originated during the last 10 Myr from a single radiation. © 2012 The Linnean Society of London.


Price M.J.,Conservatoire et Jardin botaniques de la Ville de Geneva | Ellis L.T.,Natural History Museum in London
Journal of Bryology | Year: 2011

A lectotype for Mnium chrysocomum Hedw. (; Breutelia chrysocoma (Hedw.) Lindb.) is designated herein. The presence of Schwägrichen's writing on the herbarium sheet for this taxon in G and the confusion of the name with Bartramia arcuata Sw. and Mnium arcuatum Dicks. ex With. necessitated the correct designation of the nomenclatural type. The protologue, single herbarium sheet for M. chrysocomum in the Hedwig-Schwägrichen collection (G [G00040056]), the cited earlier illustrations of this entity and specimens in the herbaria of Turner (BM) and Dickson (BM) were taken into consideration to determine the most appropriate material for typification. The original sheet for M. chrysocomum in the Hedwig-Schwägrichen collection (G [G00040056]) contains material that possibly originated from the Dickson herbarium (BM) and was probably used by Hedwig for his 1801 description, along with Dickson's own description of the plant, to produce his protologue for M. chrysocomum in Species muscorum frondosorum. However, one of the four entities on sheet G00040056 is of unknown origin, and its inclusion on the sheet may postdate the publication of the species. It is clearly desirable to designate a lectotype specimen for M. chrysocomum from among the remaining plants. Sheet G00040056 is labelled in the hand of Schwägrichen, although in this case the material itself is annotated by Schwägrichen as being that of Hedwig. The issue of herbarium sheets for taxa described by Hedwig, but apparently labelled and annotated by Schwägrichen, is discussed herein. © British Bryological Society 2011.


Jeanmonod D.,Conservatoire et Jardin Botaniques de la Ville de Geneva
Condor | Year: 2010

The Litardière herbarium (deposited in G) contains many types that have previously been overlooked. The aim of this work was to identify all the new Corsican taxa then to extract all the type specimens from Corsica present in that herbarium and reported by Litardière and other botanists. 97 new Corsican taxa have been identified, and for 91 taxa, 135 type specimens (including duplicates) were found. This type material has been carefully typified as 36 holo-, 49 lecto-, 2 isolecto- and 47 syntypes. 45 taxa were described by R. de Litardière himself, 30 by K. H. Zahn (for Hieracium L.), 9 by J. L. van Soest (for Taraxacum F. H. Wigg.) and 13 by other botanists (J. Arènes, J. M. C. Arvet-Touvet, J. Gamisans, R. Maire, K. Ronniger, G. Rouy, A. Saint-Yves and T. G. Yuncker). These taxa belong to 20 families and 33 genera, but about the half (48) belong to Asteraceae, and are essentially species from Taraxacum and Hieracium. © CONSERVATOIRE ET JARDIN BOTANIQUES DE GENÈVE 2010.


Truong C.,Conservatoire et Jardin Botaniques de la Ville de Geneva | Clerc P.,Faculte Des Science Of Luniversite De
Lichenologist | Year: 2012

In tropical South America (Venezuela, Colombia, Ecuador, Peru, Bolivia and Brazil), we investigated the diversity of Usnea species with a pigmented, C+ yellow medulla. Four species are treated: the sorediate U. ceratina and U. entoviolata, the latter being new for South America, and the non-sorediate U. cristatula and U. flavorubescens, the latter being newly described here. A detailed description is provided for each species together with an identification key. Copyright © British Lichen Society 2012.


Ellis L.T.,Natural History Museum in London | Price M.J.,Conservatoire et Jardin botaniques de la Ville de Geneva
Journal of Bryology | Year: 2012

A lectotype for Gymnostomum pennatum Hedw. [=Schistostega pennata (Hedw.) F.Weber & D.Mohr] is selected herein. This entity was first described by Dickson (1785) as Mnium osmundaceum Dicks. before being ascribed to Hedwig (1801) under the name Gymnostomum pennatum. Potential type material from G (Hedwig-Schwägrichen collection) as well as earlier collections in BM (Herb. Dickson) and K (Herb. Lightfoot) were examined and a lectotype was selected for this early moss name from amongst the extant material. © British Bryological Society 2012.

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