| 2. |
- Ryde, Ulf
(författare)
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Rubus sect. Corylifolii in the province of Halland, SW Sweden
- 2009
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Ingår i: Svensk Botanisk Tidskrift. - 0039-646X. ; 103, s. 279-300
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Tidskriftsartikel (refereegranskat)abstract
- Abstract in UndeterminedAn inventory is described of Rubus sect. Corylifolii from the province of Halland in south-west Swe- den. About 850 localities have been visited and field studies have been combined with chromo- some counting and random amplified polymorphic DNA studies. Ten traditional species have been observed, as well as six local species, two with over70 localities each. The other four have 4–15 locali- ties. Hybrids with R. idaeus have been observed at four localities and hybrids with R. caesius have been found at 27 localities. These hybrids have previously been called R. pruinosus and R. cyclomorphus, but it is shown that they are polymorphous and do not show any distinct distribution. Only two specimens have been impossible to classify. One is probably introduced, whereas the other might be a derivative of a hybrid.
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| 3. |
- Ryde, Ulf, et al.
(författare)
-
Rubus sordirosanthus in Halland, southwest Sweden
- 2010
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Ingår i: Svensk Botanisk Tidskrift. - 0039-646X. ; 104, s. 405-413
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Tidskriftsartikel (refereegranskat)abstract
- Abstract in UndeterminedRubus sordirosanthus (sect. Corylifolii Lindl.) was published, although invalidly, by Hylander 1958 from the province of Halland, south-western Sweden. A holotype is here provided to make the name validly published. Recent field studies have shown that it occurs at almost 100 localities in a restricted area of c. 6 km around Steninge in central Halland. In addition, it is found on a former refuse tip in the city of Halmstad, 23 km to the south. A morpho- logically similar form has been found in three places at roadsides around the city of Varberg, 33 km to the north.We have used genetic methods to investigatethe relation between these forms and the related species R. wahlbergii Arrh. The chromosome num- ber of R. sordirosanthus from Steninge and Halmstad, as well as the Varberg form is 2n=28, in contrastto 2n=35 for R. wahlbergii. Moreover, RAPD DNA analysis shows that the two species are genetically separated. Rubus sordirosanthus from Steninge and Halmstad is homogeneous, whereas the Varberg form differs, although not in the direction towards R. wahlbergii. The latter species is genetically quite diverse. Thus, R. sordirosanthus is a well-defined and locally abundant species in Halland. On the other hand, the Varberg form gives the impression of being introduced in Varberg and therefore probably occurs also in other areas.Typification:Rubus sordirosanthus H. Hyl. ex Ryde nov. spec. Descr. orig.: H. Hylander, Botaniska Notiser 111, p. 521 (1958). Icon. (holotypus): Ibid. p. 522, fig. 3. Holotypus: Halland, Steninge bruk, Ö om Bräcketorp, ”ängen”, 13/7 1951. leg. H. Hylander (LD).
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