| 1. |
- Thulin, Mats, 1948-
(author)
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Acacia fumosa sp. nov. (Fabaceae) from eastern Ethiopia
- 2008
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In: Nordic Journal of Botany. - 0107-055X .- 1756-1051. ; 25:5-6, s. 272-274
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Journal article (peer-reviewed)abstract
- The new species Acacia fumosa is described and illustrated. It is confined to the Somali National Regional State (Ogaden) in eastern Ethiopia, where it is dominant and widespread on limestone hills in an area of at least 8 000 km2. Acacia fumosa is closely related to A. ochracea in south-western Somalia, but differs, for example, in its ash grey, smooth and non-flaking bark, densely pubescent leaves, and pink flowers.
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| 2. |
- Lidén, Magnus, 1951-
(author)
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New species, combinations, and records of Hypecoum, Dactylicapnos and Corydalis (Fumariaceae) in China
- 2008
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In: Nordic Journal of Botany. - 0107-055X .- 1756-1051. ; 25:1-2, s. 1-5
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Journal article (peer-reviewed)abstract
- Five new species of Fumariaceae from the Flora of China area, viz. Hypecoum zhukanum (sect. Leptocarpae), Dactylicapnos gaoligongshanensis (sect. Dactylicapnos), D. leiosperma (sect. Minicalcara), Corydalis laxiflora and C. tianshanica (subgenus Cremnocapnos sect. Stricute), are described. Dactylicapnos burmanica comb. nov., D. grandifoliolata and D. macrocapnos are reported from China for the first time, and the new combinations Dactylicapnos ventii (basion.: Dicentra ventii T. C. Khanh), D. schneideri (basion.: Dicentra schneideri Fedde) and D. burmanica (basion.: Dicentra burmanica K. R. Stern) are validated. Novelties in Corydalis subgenus Corydalis will be published separately.
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| 3. |
- Tyler, Torbjörn
(author)
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On Hieracium incurrens (Asteraceae) and similar species in central Sweden.
- 2007
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In: Nordic Journal of Botany. - 0107-055X. ; 25:3-4, s. 152-160
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Journal article (peer-reviewed)abstract
- Hieracium incurrens Saelan ex Norrl., originally described from Finland, has been reported from Sweden several times and independently by different authors. Still, however, its presence in Sweden has remained dubious and it has become obvious that the different reports are referable to different taxa and the name has thus been, at least partially, misapplied. In the present study, all Swedish material and putative taxa that have been suggested to belong to H. incurrens, as well as some additional closely similar taxa, is critically compared with authentic material of the latter from Finland. It is concluded that H. incurrens do indeed occur in central Sweden, namely in the eastern coastal provinces closest to Finland. However, the relevant material has mostly been referred to H. longilingua Johanss., which is here considered to be a later synonym of H. incurrens. Material previously referred to H. incurrens from other parts of Sweden does, however, represent other taxa. Five accepted species of this affinity are described and discussed in some detail and one species, viz. H. oestmanii T. Tyler is described anew. In addition, the unrelated species H. arnoldii T. Tyler is described anew based on material from the provinces of Hälsingland and Medelpad.
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| 4. |
- Kärnefelt, Ingvar
(author)
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Editorial
- 2009
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In: Nordic Journal of Botany. - 0107-055X. ; 25:1, s. 4-4
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Journal article (peer-reviewed)abstract
- Abstract is not available
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| 5. |
- Lind, Henrik, et al.
(author)
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Metapopulation pollination in the deceptive orchid Anacamptis pyramidalis
- 2007
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In: Nordic Journal of Botany. - 0107-055X .- 1756-1051. ; 25:3-4, s. 176-182
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Journal article (peer-reviewed)abstract
- Pollen dispersal between local plant populations within a range of 6 kin in a geographically defined metapopulation of the lepidopteran-pollinated deceptive orchid Anacamptis pyramidalis was studied on the island Oland in the Baltic Sea. Local A. pyramidalis populations were examined for pollinators, flowering individuals, and fruit set. Population sizes of pollen vector species were estimated using a mark-release-recapture technique. As pollen vectors, the burner moth Zygaena minos and the butterfly Aporia crataegi dominated. 205 out of 745 marked lepidopterans were pollinarium carriers. The proportion carriers of the total was considerably higher in Z. minos (50.3%), than in A. crataegi (21.5%) and nymphalidae (8.2%). Furthermore, Z minos moved much shorter distances than A. crataegi did, while no difference in potential pollen dispersal distances were found between males and females. The number of individual vectors recaptured in another local population of A. pyramidalis was low: A. crataegi (8) and Z minos (1). The ratio of pollinaria transferred to another local A. pyramidolis population compared to pollinaria remaining within the same local population was 1:41. This study highlights that pollen dispersal distances vary between pollen vector species.
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| 6. |
- Tyler, Torbjörn
(author)
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Editorial
- 2007
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In: Nordic Journal of Botany. - 0107-055X. ; 25:1, s. 3-3
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Journal article (peer-reviewed)abstract
- Abstract is not available
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| 7. |
- Tyler, Torbjörn
(author)
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How complete and correct was Linnaeus’ knowledge and classification of the Swedish flora?
- 2007
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In: Nordic Journal of Botany. - 0107-055X. ; 25:1-2, s. 7-8
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Journal article (peer-reviewed)abstract
- The degree to which Carolus Linnaeus managed to describe the vascular plant species diversity of his native country, and the proportion of his taxonomic decisions concerning the rank and generic classification of these same species that are considered correct by present-day taxonomists, is analyzed by comparing the most recent checklist of the Swedish flora, excluding later immigrants, with the works of Linnaeus. It is concluded that 79% of the species occurring in Sweden by the year 1700 were recognized and accepted by Linnaeus. Of these, ca 74% are still today accepted with the same rank, and are referred to the same genus. Thus, one answer to the current popular question of to what extent 'Linnaeus was right' is: approximately three quarters!
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| 8. |
- Antonelli, Alexandre, 1978, et al.
(author)
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Pollination of the Lady's slipper orchid (Cypripedium calceolus) in Scandinavia - taxonomic and conservational aspects
- 2009
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In: Nordic Journal of Botany. - : Wiley. - 0107-055X .- 1756-1051. ; 27:4, s. 266-273
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Journal article (peer-reviewed)abstract
- The Lady's slipper orchid Cypripedium calceolus L. is considered one of the most beautiful orchids of Europe. Consequently, the species has suffered from over-collecting and is now critically endangered in many countries. Although pollination success is suspected to influence the long-term survival of Cypripedium calceolus, relatively little is known about the identity of its pollinators in mainland Sweden - a region that comprises the largest European populations. In order to identify which species pollinate eight representative populations in mainland Sweden, we observed and sampled visitors to flowers using a standardized protocol. Specimens were identified and any pollen smear found on their body was examined for the presence of Cypripedium pollen. Nine species were recognized as effective pollen vectors (Andrena cineraria, A. carantonica, A. haemorrohoa, A. helvola, A. nigroaenea, A. praecox, Colletes cunicularius, Lasioglossum fratellum and L. fulvicorne), four of them for the first time in Scandinavia. This is the first time that a species of Colletes is reported to carry pollen of Cypripedium in this region. All but one specimens were females. Our results suggest a taxonomically heterogeneous pollinator fauna for Cypripedium calceolus and are discussed in light of the management of this species.
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| 9. |
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| 10. |
- Cousins, Sara A. O., et al.
(author)
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Land use history and site location are more important for grassland species richness than local soil properties
- 2009
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In: Nordic Journal of Botany. - : Wiley. - 0107-055X .- 1756-1051. ; 27, s. 483-489
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Journal article (peer-reviewed)abstract
- Lately there has been a shift in Sweden from grazing species-rich semi-natural grasslands towards grazing ex-arable fields in the modern agricultural landscape. Grazing ex-arable fields contain a fraction of the plant species richness confined to semi-natural grasslands. Still, they have been suggested as potential target sites for re-creation of semi-natural grasslands. We asked to what extent does fine-scale variation in soil conditions, management history and site location effect local plant diversity in grazed ex-arable fields. We examined local soil conditions such as texture, pH, organic carbon, nitrogen (N) and extractable phosphate (P) and effects on plant richness in ten pairs of grazed ex-fields and neighbouring semi-natural grasslands in different rural landscapes. Each grassland pair where in the same paddock. A multivariate test showed that site location and land use history explained more of differences in species richness than local soil property variables. Plant species richness was positively associated to grazed ex-fields with low pH, low N and P levels. Sites with high plant richness in semi-natural grasslands also had more species in the adjacent grazed ex-fields, compared to sites neighbouring less species-rich semi-natural grasslands. Although both soil properties and species richness were different in grazed ex-fields compared to semi-natural grassland, the site location within a landscape, and vicinity to species-rich grasslands, can override effects of soil properties. In conclusion, if properly located, ex-arable fields may be an important habitat to maintain plant diversity at larger spatio-temporal scales and should considered as potential sites for grassland restoration.
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