Kreuzungen zwischenBetula verrucosa undBetula pubescens

Eifler, Irmgard

doi:10.1007/bf00711790

Cited by 10 publications

(1 citation statement)

References 6 publications

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“…By counting the chromosome complement of a tree it has been possible to show that some trees are in fact hybrids. The number of these that have been found in the wild to date is low although Eifler (1958) has produced many hybrid trees by artificial pollinations. Hadfield (1967) said '... variations are so considerable that it seems quite impossible to make tidy arrangements.…”

Section: Conelu~onmentioning

confidence: 98%

A taxonomic history of the British birch tree

Tuley

1973

Transactions of the Botanical Society of Edinburgh

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Most taxonomists now agree that there are three native birches in Britain but there is disagreement on their correct specific names. Linnaeus' Species Plantarum of 1753 introduced the binomial system to taxonomy and he described two birches that occurred in the cooler parts of Europe. One of these, the dwarf birch, which he called Betula nana has retained its original name but the other, the tree birch B. alba has undergone many changes of name and has been separated into several species by some taxonomists. This paper traces the changes that have occurred in the specific name of the British birch tree since 1753, and shows that if there are two species of birch tree then they should be called B. pendula Roth and B. pubescens ]Ehrh. The author concludes that until the status of the British birch tree has been satisfactorily examined B. pendula and B. pubescens should be regarded as subspecies of the Linnaean B. alba.

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Section: Conelu~onmentioning

confidence: 98%