Ein kromosomkanning av sinugrasi, (reyð-vingli, Festuca rubra L.) ið vaksið hevur ymsastaðni í Føroyum A chromosomal investigation of red fescue, Festuca rubra L., from different localities in the Faeroes
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Abstract
Chromosome numbers were determined in plant material of the species group Festuca rubra L. (red fescue) collected from 5 geographically different locations of the Faeroes. Each locality represented a plant group, and approx. 100 chromosome counts were made in each group. In 2 of the groups a chromosome number of 2n = 84 was found, and it was considered probable, also on the basis of botanical features, that these groups represented Festuca rubra L. f. arenaria Osbeck, possibly an autotetraploid
form or a natural hybrid. A chromosome number of 2n = 42 showed the 3 other groups to be Festuca rubra L. f. fraterculae R. Rasm., a grass which is chiefly found growing in the mountain nesting sites of puffins, Fratercula arctica. Numerous and variable intermediate types would indicate that a natural hybridization occurs, probably between these two grasses.
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