In:
Journal of Phycology, Wiley, Vol. 50, No. 1 ( 2014-02), p. 149-166
Abstract:
The phylogeny of ligulate and sulfuric‐acid containing species of D esmarestia , occurring worldwide from polar to temperate regions, was revised using a multigenic and polyphasic approach. Sequence data, gametophyte characteristics, and sporophyte morphology support reducing a total of 16 taxa to four different species. (1) D . herbacea , containing broad‐bladed and highly branched forms, has dioecious gametophytes. The three other species have monoecious gametophytes: (2) D . ligulata which is profusely branched and, except for one subspecies, narrow‐bladed, (3) J apanese ligulate D esmarestia , here described as D . japonica sp. nov., which is morphologically similar to D . ligulata but genetically distant from all other ligulate taxa. This species may have conserved the morphology of original ligulate D esmarestia . (4) D . dudresnayi, including unbranched or little branched broad‐bladed taxa. A figure of the holotype of D . dudresnayi , which was lost for decades, was relocated. The taxonomy is complemented by a comparison of internal transcribed spacer and cytochrome c oxidase subunit I ( cox 1) as potential barcode loci, with cox 1 offering good resolution, reflecting species delimitations within the genus D esmarestia .
Type of Medium:
Online Resource
ISSN:
0022-3646
,
1529-8817
DOI:
10.1111/jpy.2014.50.issue-1
Language:
English
Publisher:
Wiley
Publication Date:
2014
detail.hit.zdb_id:
281226-5
detail.hit.zdb_id:
1478748-9
SSG:
12
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