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- Adamonyte, G, et al.
(author)
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Morphological variation and taxonomic characters in Cribraria (Myxomycetes) from the Great Smoky Mountains National Park in eastern USA
- 2010
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In: NOVA HEDWIGIA. - : Schweizerbart. - 0029-5035. ; 90:3-4, s. 303-320
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Journal article (peer-reviewed)abstract
- Cribraria is one of the most taxonomically difficult genera in the myxomycetes. The genus as a whole is well characterized but several of the currently accepted species are vaguely defined with ranges of morphological variation overlapping. Morphological characters are discussed based on specimens of eleven species from the Great Smoky Mountains National Park in eastern U.S.A. Cribraria persoonii, C. piriformis and C. vulgaris are reported from the National Park for the first time, making a total of 21 species of the genus so far recorded in the Park. Other species discussed in some detail include C. elegans, C. intricata. C. languescens, C. macrocarpa and C. oregano. Light photomicrographs illustrate most of the species.
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| 4. |
- Eliasson, Uno
(author)
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Coprophilous myxomycetes: Recent advances and future research directions
- 2013
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In: Fungal Diversity. - : Springer Science and Business Media LLC. - 1560-2745 .- 1878-9129. ; 59:1, s. 85-90
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Journal article (peer-reviewed)abstract
- Species of myxomycetes are adapted to different ecological niches and occupy different microhabitats. The majority of species have a wide ecological amplitude and may be found on various kinds of substrata. Some species have narrower ecological niches and are restricted to or mainly found on one special kind of substratum. Coprophilous species grow on dung or on a substratum in close contact with dung. The vast majority of records stem from moist chamber cultures on dung from herbivorous mammals, but several species have also been recorded on droppings from birds. A limited number of species can be regarded as truly coprophilous in that they have predominantly or in some cases only been recorded on dung. Some of these species are known from very few collections and their dependence on dung may therefore be difficult to judge. No correlation is absolute and species regarded as coprophilous may sometimes, although rarely, turn up on other types of substrata. Dung is rich in bacteria and nutrients and is a favourable substratum for myxomycetes. Many species normally inhabiting other habitats are occasionally found on dung, and up to now about 114 species have been reported from this kind of substratum, a number that will continue to grow. At least three species, Licea alexopouli, Kelleromyxa fimicola and Trichia brunnea, have thick-walled spores, a possible adaptation to passing through the intestinal tract of a herbivore before germination can take place.
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| 5. |
- Eliasson, Uno
(author)
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GUNNAR HARLING (1920-2010)
- 2010
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In: TAXON. - 0040-0262. ; 59:5, s. 1619-1619
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Journal article (other academic/artistic)
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| 8. |
- Eliasson, Uno
(author)
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Review and remarks on current generic delimitations in the myxomycetes, with special emphasis on Licea, Listerella and Perichaena
- 2017
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In: Nova Hedwigia. - : Schweizerbart. - 0029-5035. ; 104:1-3, s. 343-350
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Journal article (peer-reviewed)abstract
- Genera and species of myxomycetes have been based traditionally on morphological features of the fruitbodies (sporocarps). Certain species bridge the gap between two genera by combining morphological characters, such as is the case for Hemitrichia leiocarpa, which combines characters of Hemitrichia and Arcyria and could equally well be placed in either genus on morphological grounds. A few species of Physarum and Badhamia combine characters of both genera. Molecular investigations are today a powerful tool for investigating evolutionary relationships, and there is molecular evidence that the two physaraceous genera mentioned above can no longer be maintained as presently circumscribed. Paraphyly has been demonstrated in the Stemonitales and additional molecular data are likely to necessitate changes in the circumscription of some genera. Certain species of Licea and Perichaena have minute sporocarps with simple morphology. Smaller sporocarps of some species of Perichaena may lack a capillitium and be morphologically similar to species of Licea, which blurs the line of separation between these two genera. The genus Licea remains enigmatic and is almost certainly unnatural, even after the removal of L. fimicola to a separate genus. Additional molecular investigations are necessary to elucidate the relationships among the different species.
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| 10. |
- Eliasson, Uno
(author)
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The evolutionary patterns of the plant family Amaranthaceae on the Galapagos and Hawaiian Islands
- 2004
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In: JOURNAL OF THE TORREY BOTANICAL SOCIETY. - 0040-9618. ; 131:2, s. 105-109
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Journal article (peer-reviewed)abstract
- The evolutionary patterns of the plant family Amaranthaceae on the Galapagos and Hawaiian Islands. J. Torrey Bot. Soc. 131:105-109. 2004-Different subfamilies of the Amaranthaceae have differentiated in the Galapagos and the Hawaiian Islands. In both archipelagos the endemic taxa exhibit a wide range of variation. Woodiness has evolved in both archipelagos through the so-called anomalous secondary growth typical of the caryophylliid families. Hybridization and transgression phenomena probably play an important role and may explain the morphological variation patterns in some taxa. Variation within individual populations sometimes hint to incipient speciation. In the Galapagos the subfamily Gomphrenoideae is represented by endemic species of Alternanthera, Lithophila and Blutaparon. Morphological features suggest that the group of about nine endemic species of Alternanthera can be traced back to two or three original colonization events. Several infraspecific taxa have been recognized but the current classification should be regarded as tentative and further studies based on molecular data are needed. In the Hawaiian Islands the subfamily Amaranthoideae has differentiated, with one genus, Nototrichium, endemic with three species. The genus Charpentiera has five endemic species in Hawaii and one species in the Austral Islands. The higher level of endemism in Hawaii as compared with that in the Galapagos stems from the combined effects of the more isolated geographical position, the more varied ecological conditions, and the greater geological age of the Hawaiian chain.
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