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Morphometrics and taxonomy of Erigeron acris sensu lato

Olander, Sanna and Tyler, Torbjörn LU (2017) In New Journal of Botany 7(1). p.39-50
Abstract (Swedish)
Morphometric multivariate analysis has been performed based on 23 characters observed on 113 herbarium
specimens from throughout Fennoscandia. This demonstrates that four taxa can be recognised within
Erigeron acris L. sensu lato, viz. E. acris L. subsp. acris, E. acris subsp. decoloratus (H. Lindb.) Hiitonen,
E. acris subsp. droebachiensis (O. F. Müll.) Arcang. and E. acris subsp. politus (Fr.) H. Lindb. In contrast,
the previously accepted E. (acris subsp.) brachycephalus H. Lindb. is shown to be indistinguishable from
E. acris subsp. droebachiensis and is accordingly treated as a synonym. The subspecies are
distinguishable mainly based on indumentum characteristics, and size and pigmentaton of phyllaries... (More)
Morphometric multivariate analysis has been performed based on 23 characters observed on 113 herbarium
specimens from throughout Fennoscandia. This demonstrates that four taxa can be recognised within
Erigeron acris L. sensu lato, viz. E. acris L. subsp. acris, E. acris subsp. decoloratus (H. Lindb.) Hiitonen,
E. acris subsp. droebachiensis (O. F. Müll.) Arcang. and E. acris subsp. politus (Fr.) H. Lindb. In contrast,
the previously accepted E. (acris subsp.) brachycephalus H. Lindb. is shown to be indistinguishable from
E. acris subsp. droebachiensis and is accordingly treated as a synonym. The subspecies are
distinguishable mainly based on indumentum characteristics, and size and pigmentaton of phyllaries and
floral parts, but 21 of the 23 characters were significantly different among taxa. The largest number (ten)
of significantly different characters was found between subspecies acris, droebachiensis and politus,
whereas only five characters differed significantly between decoloratus and acris. The contrasting
character ranges and distinctness of these taxa is presented and discussed, and a key to the subspecies
is provided. In addition, their distributions in Sweden are mapped based on herbarium specimens,
showing that subsp. acris is common almost throughout the country, subsp. droebachiensis is relatively
rare and restricted to the central parts, and subsp. politus is confined to the northern half. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Finland, multivariate, Norway, subspecies, Sweden, distribution
in
New Journal of Botany
volume
7
issue
1
pages
12 pages
publisher
Botanical Society of Britain & Ireland
external identifiers
  • scopus:85028400231
ISSN
2042-3489
DOI
10.1080/20423489.2017.1344076
language
Swedish
LU publication?
yes
id
8f540896-e515-42d4-b65d-8aefd1e139b4
date added to LUP
2017-08-28 11:48:21
date last changed
2017-09-17 09:52:31
@article{8f540896-e515-42d4-b65d-8aefd1e139b4,
  abstract     = {Morphometric multivariate analysis has been performed based on 23 characters observed on 113 herbarium<br/>specimens from throughout Fennoscandia. This demonstrates that four taxa can be recognised within<br/>Erigeron acris L. sensu lato, viz. E. acris L. subsp. acris, E. acris subsp. decoloratus (H. Lindb.) Hiitonen,<br/>E. acris subsp. droebachiensis (O. F. Müll.) Arcang. and E. acris subsp. politus (Fr.) H. Lindb. In contrast,<br/>the previously accepted E. (acris subsp.) brachycephalus H. Lindb. is shown to be indistinguishable from<br/>E. acris subsp. droebachiensis and is accordingly treated as a synonym. The subspecies are<br/>distinguishable mainly based on indumentum characteristics, and size and pigmentaton of phyllaries and<br/>floral parts, but 21 of the 23 characters were significantly different among taxa. The largest number (ten)<br/>of significantly different characters was found between subspecies acris, droebachiensis and politus,<br/>whereas only five characters differed significantly between decoloratus and acris. The contrasting<br/>character ranges and distinctness of these taxa is presented and discussed, and a key to the subspecies<br/>is provided. In addition, their distributions in Sweden are mapped based on herbarium specimens,<br/>showing that subsp. acris is common almost throughout the country, subsp. droebachiensis is relatively<br/>rare and restricted to the central parts, and subsp. politus is confined to the northern half.},
  author       = {Olander, Sanna and Tyler, Torbjörn},
  issn         = {2042-3489},
  keyword      = {Finland, multivariate, Norway, subspecies, Sweden, distribution},
  language     = {swe},
  month        = {08},
  number       = {1},
  pages        = {39--50},
  publisher    = {Botanical Society of Britain & Ireland},
  series       = {New Journal of Botany},
  title        = {Morphometrics and taxonomy of Erigeron acris sensu lato},
  url          = {http://dx.doi.org/10.1080/20423489.2017.1344076 },
  volume       = {7},
  year         = {2017},
}