Studies in the cytotaxonomy of the British species of the genus Atrichum

Wood, Marion M.

(1957)

Wood, Marion M. (1957) Studies in the cytotaxonomy of the British species of the genus Atrichum.

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Abstract

In order to define the present status of the genus Atrichum in Britain, data available from various floras and other publications are examined. Also literature relating to the cytology of the bryophytes is reviewed. Herbarium and living specimens are examined, the latter both in the field and under controlled conditions, to establish the range of variation in each species and to determine whether this is of genetic or environmental origin. Finnish and British material of A. tenellum are compared and two new races of A. undulatum, with distinct morphology, are described. Cytological investigation shows that A. crispum, A. angustatum and A. tenellum are all present as N=7 races in Britain. A. undulatum occurs mainly as the N=21 race with sporadic aneuploid specimens, but diploid (N=14) races, of very local distribution, also occur. The use of certain characters for species identification is discussed in the light of the results obtained in the investigation and the cytological basis of sex expression in the genus is discussed with particular reference to A. undulatum. Finally the species and races of Atrichum in Britain are described.

Information about this Version

This is a Accepted version
This version's date is: 1957
This item is not peer reviewed

Link to this Version

https://repository.royalholloway.ac.uk/items/49dd0530-b0f3-4b78-a3fe-2b9817a980b9/1/

Item TypeThesis (Doctoral)
TitleStudies in the cytotaxonomy of the British species of the genus Atrichum
AuthorsWood, Marion M.
Uncontrolled KeywordsBotany; Biological Sciences; Atrichum; Atrichum; British; Cytotaxonomy; Genus; Species; Studies
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Identifiers

ISBN978-1-339-60732-0

Deposited by David Morgan (UBYL020) on 01-Feb-2017 in Royal Holloway Research Online.Last modified on 01-Feb-2017

Notes

Digitised in partnership with ProQuest, 2015-2016. Institution: University of London, Royal Holloway College (United Kingdom).


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