1,721,176 research outputs found
Towards a monophyletic classification of Lejeuneaceae III: the systematic position of Leiolejeunea
No full textSchäfer-Verwimp, Alfons, Feldberg, Kathrin, Dong, Shanshan, Melick, Huub Van, Peralta, Denilson F., Schmidt, Alexander R., Schneider, Harald, Heinrichs, Jochen (2014): Towards a monophyletic classification of Lejeuneaceae III: the systematic position of Leiolejeunea. Phytotaxa 170 (3): 187-198, DOI: 10.11646/phytotaxa.170.3.4, URL: http://dx.doi.org/10.11646/phytotaxa.170.3.
FIGURE 2 in Size doesn´t matter-recircumscription of Microlejeunea (Lejeuneaceae, Porellales) based on molecular and morphological evidence
No full textFIGURE 2. Phylogram generated in a maximum likelihood analysis of the combined dataset with bootstrap percentage values ≥50 indicated at branches. Black lines: ocelli present, white lines: ocelli lacking.Published as part of Dong, Shanshan, Schäfer-Verwimp, Alfons, Pócs, Tamás, Feldberg, Kathrin, Czumaj, Aleksandra, Schmidt, Alexander R., Schneider, Harald & Heinrichs, Jochen, 2013, Size doesn´t matter-recircumscription of Microlejeunea (Lejeuneaceae, Porellales) based on molecular and morphological evidence, pp. 41-55 in Phytotaxa 85 (2) on page 50, DOI: 10.11646/phytotaxa.85.2.2, http://zenodo.org/record/507179
Frullania cretacea sp nov (Porellales, Jungermanniopsida), a leafy liverwort preserved in Cretaceous amber from Myanmar
No full textThe extinct Frullania cretacea sp. nov. is described based on a gametophytic plant fragment preserved in Upper Albian amber from Myanmar (Burma). The fragment contains of a portion of a branched shoot with mamillose leaf lobes and campanulate lobules forming watersacs. The Mesozoic species is assumed to be an early representative of the Frullania crown group and tentatively assigned to F. subg. Frullania.German Research Foundation [3584 / 2-2
Frullania cretacea sp nov (Porellales, Jungermanniopsida), a leafy liverwort preserved in Cretaceous amber from Myanmar
No full textThe extinct Frullania cretacea sp. nov. is described based on a gametophytic plant fragment preserved in Upper Albian amber from Myanmar (Burma). The fragment contains of a portion of a branched shoot with mamillose leaf lobes and campanulate lobules forming watersacs. The Mesozoic species is assumed to be an early representative of the Frullania crown group and tentatively assigned to F. subg. Frullania.German Research Foundation [3584 / 2-2
The fossil hornwort described from Dominican amber is an angiosperm flower
No full textHornworts (Anthocerotophyta) are a main lineage of land plants but they are exceedingly rare as fossils. The only fossil hornwort described from amber has been interpreted as the best preserved fossil of this group. Reinvestigation of this fossil revealed that this Miocene amber inclusion represents a poorly preserved flower that shows some features of the Caesalpinioideae subfamily of the Fabaceae. (C) 2010 Elsevier B.V. All rights reserved.German Initiative of Excellenc
Staminate inflorescences with in situ pollen from Eocene Baltic amber reveal high diversity in Fagaceae (oak family)
No full textEocene Baltic amber forms the largest amber deposit worldwide; however, its source vegetation and climateare much debated. Representatives of the oak family (Fagaceae) were abundant in the Baltic amber source areabased on numerous inclusions of staminate inflorescences or individual florets, previously assigned to Castanea andQuercus. However, the actual generic and infrageneric diversity of Fagaceae from Baltic amber remained unknown.Using flower characteristics and section-diagnostic in situ pollen of staminate inflorescences and detached floret inclusions,we describe 18 fossil-species of Fagaceae making this family by far the most diverse plant family preservedin Baltic amber. We substantiate the occurrence of the Castaneoideae, Quercoideae (Quercus sect. Cyclobalanopsis/ Lobatae; Q. sect. Lobatae; Q. sect. Protobalanus), Trigonobalanoideae and the extinct genus Eotrigonobalanus.Among the 18 fossil-species, six are described as new: Q. aimeeana, Q. casparyi, Q. multipilosa, E. campanulata,E. conwentzii, E. longianthera; and one new combination is published: Q. brachyandra (≡ Castanea brachyandra).In addition, a lectotype is designated for the name Quercites meyerianus and neotypes are designated for the namesCastanea inclusa and Quercus longistaminea (≡ C. longistaminea). Members of the Fagaceae probably inhabitedazonal and zonal vegetation types of the amber source area, including bottomland flood-plains and stream banks(Q. sect. Lobatae), dry habitats (Q. sect. Lobatae, Q. sect. Protobalanus), peaty soils, riparian and swamp forests(Castanopsis, Eotrigonobalanus), as well as mixed mesophytic forests (castaneoids, Quercoideae, trigonobalanoids).Affinities to extant North American and E to SE Asian floras support the recent notion that late Eocene Baltic amber(38 – 34 Ma) was formed in a warm-temperate climate.</p
Bryophytes of the Burmese amber forest: Amending and expanding the circumscription of the Cretaceous moss genus Vetiplanaxis
No full textSeveral sterile gametophyte fragments of pleurocarpous mosses preserved in Cretaceous amber from Myanmar are described. All inclusions share the presence of long and relatively thin-walled cells in the middle portion of the leaf lamina, a relatively narrow costa with dorsal teeth, slightly differentiated marginal cells, and almost exclusively unicellular teeth in the leaf margin, indicating affinities to hypnodendralean pleurocarpous mosses. Re-investigation of the holotype of Vetiplanaxis pyrrhobryoides from the same amber deposit allows for a revision of the current taxonomic treatment as a putative member of Rhizogoniales, and tentatively supports the original interpretation as a member of Hypnodendrales. Three further fossils are described as new species Vetiplanaxis espinosus. Vetiplanaxis longiacuminatus, and Venplanaxis oblongus. These new finds indicate that a diverse pleurocarpous moss flora was present in the Cretaceous amber forest of Myanmar, and mark this deposit as one of the most promising localities for reconstructing Cretaceous bryophyte floras. (C) 2014 Elsevier B.V. All rights reserved.German Excellence Initiative [133
The extant moss genus Leucobryum (Bryopsida: Leucobryaceae) from Miocene Zhangpu amber
No full texthttp://dx.doi.org/10.13039/501100001659 German Research Foundatio
FIGURE 2 in Sphaerolejeunea (Lejeuneaceae, Porellales) is a synonym of Lejeunea
No full textFIGURE 2. Phylogram generated in a maximum likelihood analysis of the combined dataset. Bootstrap values are indicated at branches.Published as part of Heinrichs, Jochen, Dong, Shanshan, Feldberg, Kathrin, Schäfer-Verwimp, Alfons & Schmidt, Alexander R., 2012, Sphaerolejeunea (Lejeuneaceae, Porellales) is a synonym of Lejeunea, pp. 7-15 in Phytotaxa 69 (1) on page 13, DOI: 10.11646/phytotaxa.69.1.3, http://zenodo.org/record/506629
Evidence for fungivory in Cretaceous amber forests from Gondwana and Laurasia
No full textCretaceous amber inclusions of insect faecal pellets (also called frass) that consist of remnants of ascomycetes and basidiomycetes provide evidence for fungivory in the Mesozoic. Conidia of an anamorphic ascomycete and the possible remains of the perithecia of its teleomorph were found in Cenomanian resin from central Ethiopia. A new anamorphic genus and species, Palaeocurvularia variabilis DORFELT et A. R. SCHMIDT, is described here based on the fungal remains inside and outside the faecal pellets in the amber. Other faecal pellets consisting of remnants of polyporoid basidiomata (polyporous fungi or bracket fungi) were found in pieces of amber from the uppermost Albian in southwestern France. Pigmented skeletal hyphae, setae (spinulae) and basidiospores suggest that this insect food source pertains to the Hymenochaetales (Basidiomycota, Agaricomycetidae). While large fruiting bodies of the Homobasidiomycetes do not appear in the fossil record until the Early Cretaceous, the newly found amber inclusions from France show that these early macromycetes must have served as a habitat for fungivorous insects since the Albian.German Initiative of Excellenc
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