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195 results on '"Freitag, Helmut"'

17. (3000) Proposal to conserve the name Soda against Sevada (Chenopodiaceae s.str. / Amaranthaceae s.l.).

Author

Mosyakin, Sergei L. and Freitag, Helmut

Subjects
AMARANTHACEAE, CHENOPODIACEAE, CLASSIFICATION, FAMILIES
Abstract

The article discusses the taxonomic classification and nomenclature of the genus Soda (Dumort.) Fourr. within the family Chenopodiaceae s.str. / Amaranthaceae s.l. The article highlights the debate surrounding the typification of the genus name Salsola and the need for proper taxonomic application. The authors propose conserving the name Soda against the name Sevada, as the former is applicable to a distinct clade within the genus. The article emphasizes the importance of maintaining nomenclatural stability and suggests that the acceptance of their proposal will not eliminate the name Sevada from the nomenclature. [Extracted from the article]

Published
2023
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40. Kranz anatomy is not essential for terrestrial C4 plant photosynthesis

Author

Voznesenskaya, Elena V., Franceschi, Vincent R., Kiirats, Olavi, Freitag, Helmut, and Edwards, Gerald E.

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Author(s): Elena V. Voznesenskaya [1]; Vincent R. Franceschi [2]; Olavi Kiirats [2]; Helmut Freitag [3]; Gerald E. Edwards (corresponding author) [2] An important adaptation to CO[sub.2] -limited photosynthesis in cyanobacteria, [...]

Published
2001
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47. Salicornia cuscoensis (Amaranthaceae/Chenopodiaceae), a new species from Peru (South America)

Author

Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales, Universidad de Alicante. Centro Iberoamericano de la Biodiversidad, Alonso-Vargas, M. Angeles, Crespo, Manuel B., Freitag, Helmut, Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales, Universidad de Alicante. Centro Iberoamericano de la Biodiversidad, Alonso-Vargas, M. Angeles, Crespo, Manuel B., and Freitag, Helmut

Abstract

The name Salicornia cuscoensis given to a plant from high Andean saltmarshes near Cusco [Cuzco] and Ayacucho, Peru (South America) is validated by a diagnosis and description. The main morphological characters that separate S. cuscoensis from other closely related species are creeping habit, delicate branches, inflorescence of short and thin spikes, and seed indumentum. The new species clearly differs from other perennial Salicornia taxa growing in high Andean saltmarshes such as S. pulvinata and S. andina. The former forms small compact cushions producing very short, few-flowered inflorescences. The latter shows woody stems and forms larger rounded carpets. Morphologically, S. cuscoensis is also similar to S. magellanica, a species growing along the seashore in southern Patagonia and Tierra del Fuego, but the latter has shorter and wider inflorescences and larger seeds with a different type and arrangement of indumentum. Molecular analyses also supported the separation of S. cuscoensis. Data on habitat, distribution and phylogenetic relationships are presented for the new species and its relatives, and an identification key is given for the South American taxa of the genus Salicornia.

Published
2017

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