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Snow N.,Pittsburg State University | Callmander M.W.,Conservatoire et Jardin botaniques de la Ville de Geneva
Candollea | Year: 2016

The new species Eugenia quadriphylla N. Snow & Callm. (Myrtaceae) is described from the Makira Protected Area in northeastern Madagascar. It is easily distinguished from its congeners on the island by its thickly quadrangular branchlets and four bullate leaves per node. The species also is atypical among the majority of Eugenia species in Madagascar by virtue of its basipetally splitting calyx lobes, a character that is, however, known elsewhere in the genus. A discussion on its morphology, a line drawing, a distribution map and a preliminary assessment of its conservation status following IUCN Red List Categories and Criteria is provided for the new species. © CONSERVATOIRE ET JARDIN BOTANIQUES DE GENÈVE 2016. Source

Price M.J.,Conservatoire et Jardin botaniques de la Ville de Geneva | Ellis L.T.,Natural History Museum in London
Journal of Bryology | Year: 2015

The two species of Buxbaumia Hedw. known to occur in Europe were both originally discovered on thiscontinent and were the earliest in the genus (as presently delimited) to be described. Already widelyknown, Buxbaumia aphylla Hedw., was validated by Johannes Hedwig in 1801, whereas B. viridis (DC.)Moug. & Nestl. was initially described as a variety of B. aphylla by Augustin Pyramus de Candolle in1815. After two centuries in the bryological literature, these taxa are herein effectively typified. Lectotypesfor the names B. aphylla and B. viridis are designated based on original herbarium sheets from theHedwig-Schwägrichen and De Candolle collections in G. © British Bryological Society 2015. Source

Giralt M.,Rovira i Virgili University | Clerc P.,Conservatoire et Jardin botaniques de la Ville de Geneva
Lichenologist | Year: 2011

The study of the type and additional material of Buellia andicola, B. hypophana and B. reagens has shown that these taxa are conspecific with B. thiopoliza. Buellia thiopoliza is a muscicolous species growing at middle to high altitudes in the mountains of both hemispheres. It is easily recognized by its K+ purple-red yellow pigment mainly concentrated in the hypothecium, and by the presence of xanthones in the thallus and the apothecial tissues. The new combination Tetramelas thiopolizus is proposed. A key to all known Tetramelas species is included. The also muscicolous Buellia hypoleuca is reduced to synonymy with Phaeorrhiza sareptana var. sphaerocarpa. © 2011 British Lichen Society. Source

Ferreira G.E.,Federal University of Rio Grande do Sul | Waechter J.L.,Federal University of Rio Grande do Sul | Chautems A.,Conservatoire et Jardin botaniques de la Ville de Geneva
Systematic Botany | Year: 2014

In this paper we describe and illustrate Sinningia ramboi (Gesneriaceae), a new species occurring on rocky outcrops in the upper parts of the canyons cutting the plateau of high altitude grasslands in Rio Grande do Sul, Brazil. This new species bears some similarity to S. polyantha, S. nivalis, and S. douglasii, but is readily distinguished by opposite leaves and a much shorter main axis of the inflorescence. Ecological and distributional data, as well as a key to distinguish these related species, are also presented. © Copyright 2014 by the American Society of Plant Taxonomists. Source

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. Source

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