Mittlere Letten 11

Herdwangen-Schönach, Germany

Mittlere Letten 11

Herdwangen-Schönach, Germany
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Feldberg K.,Ludwig Maximilians University of Munich | Schneider H.,Natural History Museum in London | Stadler T.,ETH Zurich | Schafer-Verwimp A.,Mittlere Letten 11 | And 2 more authors.
Scientific Reports | Year: 2014

Recent studies have provided evidence for pulses in the diversification of angiosperms, ferns, gymnosperms, and mosses as well as various groups of animals during the Cretaceous revolution of terrestrial ecosystems. However, evidence for such pulses has not been reported so far for liverworts. Here we provide new insight into liverwort evolution by integrating a comprehensive molecular dataset with a set of 20 fossil age constraints. We found evidence for a relative constant diversification rate of generalistic liverworts (Jungermanniales) since the Palaeozoic, whereas epiphytic liverworts (Porellales) show a sudden increase of lineage accumulation in the Cretaceous. This difference is likely caused by the pronounced response of Porellales to the ecological opportunities provided by humid, megathermal forests, which were increasingly available as a result of the rise of the angiosperms.


Lavocat Bernard E.,Conservatoire Botanique de la Guadeloupe | Schafer-Verwimp A.,Mittlere Letten 11
Cryptogamie, Bryologie | Year: 2011

Checklists of the bryophytes of the Guadeloupe archipelago (including La Désirade, Marie-Galante and Les Saintes archipelago) and Martinique are presented based on published data, herbarium specimens and fieldwork. 613 species taxa, including 361 of liverworts, 242 of mosses and 10 of hornworts, are recorded from the Guadeloupe archipelago and 355 species (190 liverworts, 156 mosses, 9 hornworts) from Martinique. Fifty species (20 liverworts, 29 mosses, 1 hornwort) are new to the Guadeloupe archipelago and 21 (8 liverworts, 13 mosses) are new to Martinique. © 2011 Adac. Tous droits réservés.


Gradstein S.R.,French Natural History Museum | Schafer-Verwimp A.,Mittlere Letten 11
Cryptogamie, Bryologie | Year: 2011

A new species of Lejeuneaceae from montane cloud forest of Colombia and Costa Rica, Harpalejeunea scabra, is described and illustrated. The new species is characterized by the papillose dorsal leaf surface, a feature occurring in several related genera such as Lejeunea and Drepanolejeunea, but new to Harpalejeunea. Further diagnostic characters of H. scabra include the dorsal leaf margin with 1-3 teeth and the peculiar lobule with twinned apical teeth, free margin bordered by very narrow cells and aperture circular with the distal end of the apical margin adnate to the surface of the lobe. The new species somewhat resembles the enigmatic Drepanolejeunea navicularis Steph. from páramo of Colombia and Venezuela. The affinities of the two species are discussed. © 2011 Adac. Tous droits réservés.


Robbert Gradstein S.,CNRS Systematics, Biodiversity and Evolution Institute | Schafer-Verwimp A.,Mittlere Letten 11
Cryptogamie, Bryologie | Year: 2012

The liverwort Archilejeunea nebeliana Gradst. et Schäf.-Verw. sp. nov. (Lejeuneaceae) is described from submontane rain forest of southern Ecuador. The new species is a member of A. subg. Archilejeunea and differs from all other species of this group by narrowly and obtusely pointed leaves, thin-walled lobule cells, stem epidermis with darker-colored middle lamella, and narrowly elongate female bracts and bracteoles with acute to acuminate apices. The new species constitutes the first record of subg. Archilejeunea from the Andes and is a further addition to the unusually rich flora of the Andes of southern Ecuador. The species is named in honor of Dr. Martin Nebel. © 2012 Adac. Tous droits réservés.


Schafer-Verwimp A.,Mittlere Letten 11
Phytotaxa | Year: 2014

One hundred and seven species, two subspecies and one variety of liverworts are newly reported from Panama including 27 species which were previously unknown from Central America. In total, 328 new province records are listed. The number of liverwort and hornwort species from Panama is now close to 470. Notes on the geographical distribution of the species are provided. © 2014 Magnolia Press.


Heinrichs J.,Ludwig Maximilians University of Munich | Schafer-Verwimp A.,Mittlere Letten 11 | Feldberg K.,Ludwig Maximilians University of Munich | Schmidt A.R.,University of Gottingen
Review of Palaeobotany and Palynology | Year: 2014

We describe a sterile gametophyte fragment of a leafy liverwort preserved in Cretaceous amber from Myanmar, and place it in the extant genus Gackstroemia, as G. cretacea sp. nov., representing the second extant genus of leafy liverworts reported from the Mesozoic. The complicate bilobed leaves of the fossil have a ventral lobule forming a ciliately toothed, Frullania-type water sac, and a dorsal lobe carrying a single apical cilium, as well as bifurcate underleaves being either flat or developed as a pair of ciliately toothed water sacs. Gackstroemia cretacea is the first fossil record of Lepidolaenaceae, a family being at the present time confined to the southern temperate zone. The new fossil adds to growing evidence that southern disjunctions cannot exclusively be explained by Gondwanan vicariance and that the range of Lepidolaenaceae once included parts of Laurasia. © 2014 Elsevier B.V.


Schafer-Verwimp A.,Mittlere Letten 11
Cryptogamie, Bryologie | Year: 2010

Two hundred eighty eight liverwort species and seven infraspecific taxa in 27 families and 83 genera, and five hornwort species in four families and five genera are currently accepted for Dominica. At least 14 taxa mentioned in the Dominica literature have not been treated in recent revisions and need taxonomie verification, are doubtful records or have been excluded. Genera and species are arranged in alphabetical order. For each accepted taxon the basionym is cited and the synonyms that are based on specimens from Dominica. Furtheron, data on illustrations are presented, and eight new records are incorporated (Leiosporoceros dussii, Phaeoceros carolinianus, Aneura pinguis, Bazzania cuneistipula, Harpalejeunea uncinata, Lejeunea huctitmalcensis, Metzgeria ciliata, and Microlejeunea epiphylla). The list is complemented by some notes on geography, geology and climate, a bryogeographical survey, a short history of hepaticological exploration, and a taxonomie arrangement of the families and genera. Two new combinations, Riccardia dilatala (Aneura dilatala) and R. A. ligulata (A. ligulata) are made. © 2010 Adac. Tous droits réservés.


Schafer-Verwimp A.,Mittlere Letten 11 | Peralta D.F.,Institute Botanica | da Costa Siqueira S.M.,Institute Botanica
Phytotaxa | Year: 2012

A new species of Frullania (subg. Diastaloba) from Southeastern Brazil is described and illustrated. It is characterized by relatively large size, large rounded underleaves with deeply arched insertion line and especially by the narrow, longcylindrical and falcate lobules with a length-width ratio of 5.5-7:1. The occurrence of Frullania lindenbergii in the Neotropics is rejected. An updated key to the Brazilian species traditionally assigned to F. subgenus Diastaloba is provided. © 2012 Magnolia Press.


Heinrichs J.,University of Gottingen | Dong S.,University of Gottingen | Feldberg K.,University of Gottingen | Schafer-Verwimp A.,Mittlere Letten 11 | Schmidt A.R.,University of Gottingen
Phytotaxa | Year: 2012

Phylogenetic analyses of a three marker dataset of Lejeuneaceae (chloroplast genome rbcL gene and trnL-F region, and nuclear ribosomal ITS1-5.8S-ITS-2 region) show the presence of the monospecific genus Sphaerolejeunea in a robust subclade of Lejeunea. We treat Sphaerolejeunea as a synonym of Lejeunea, and propose a new name for Sphaerolejeunea umbilicata, Lejeunea drehwaldii. © 2012 Magnolia Press.


Schafer-Verwimp A.,Mittlere Letten 11
Phytotaxa | Year: 2012

Cololejeunea tamasii is described from Chiriqui province in western Panama. It is characterized by its small size, suborbicular to short oval leaf lobes with crenulate margins and papillose leaf cells as well as by its constantly reduced lobules of two cells. © 2012 Magnolia Press.

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