Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

A New Species of Dasysiphonia (Dasyaceae, Rhodophyta) from the Sea of Japan

A New Species of Dasysiphonia (Dasyaceae, Rhodophyta) from the Sea of Japan Abstract Dasysiphonia okiensis sp. npv. (Dasyaceae, Rhodophyta) is described from the Oki Islands, Sea of Japan. Its most distinctive feature, which is newly reported for the Dasyaceae, is the exogenous formation of adventitious polysiphonous branches from basal cells of pseudolaterals and indeterminate branches in the densely corticated lower portions of main axes. The discoid holdfast consists of a simple or irregularly branched central axial filament arising from basal axial cells, surrounded by numerous rhizoids arising from descending cortical rhizoids or from pericentral cells of main axes. Adventitious rhizoids arise from some distal cells of pseudolaterals and terminate in a simple, forked, or digitate attachment. Pseudolaterals branch pseudodichotomously 3 -- 6 times and are not modified into hairlike filaments. The thallus is decumbent and grows on other algae or sponges. Tetrasporangial stichidia are frequently formed in pairs with a forked pedicel. Introduction The genus Dasysiphonia was established by Lee and West (1979) with the type species D. chejuensis Lee et West from Cheju Island, Korea, a warm temperate region. Two additional species, D. concinna and D. doliiformis, were described by Schneider (1989) from North Carolina, U.S.A., also a warm temperate region. The Tsushima Warm Current, a western branch of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Botanica Marina de Gruyter

A New Species of Dasysiphonia (Dasyaceae, Rhodophyta) from the Sea of Japan

Kajimura, M.
Botanica Marina , Volume 35 (5) – Jan 1, 1992
Download PDF
8 pages

Loading next page...
 
/lp/de-gruyter/a-new-species-of-dasysiphonia-dasyaceae-rhodophyta-from-the-sea-of-Tmept6M30X

References (4)

Publisher
de Gruyter
Copyright
Copyright © 2009 Walter de Gruyter
ISSN
0006-8055
eISSN
1437-4323
DOI
10.1515/botm.1992.35.5.407
Publisher site
See Article on Publisher Site

Abstract

Abstract Dasysiphonia okiensis sp. npv. (Dasyaceae, Rhodophyta) is described from the Oki Islands, Sea of Japan. Its most distinctive feature, which is newly reported for the Dasyaceae, is the exogenous formation of adventitious polysiphonous branches from basal cells of pseudolaterals and indeterminate branches in the densely corticated lower portions of main axes. The discoid holdfast consists of a simple or irregularly branched central axial filament arising from basal axial cells, surrounded by numerous rhizoids arising from descending cortical rhizoids or from pericentral cells of main axes. Adventitious rhizoids arise from some distal cells of pseudolaterals and terminate in a simple, forked, or digitate attachment. Pseudolaterals branch pseudodichotomously 3 -- 6 times and are not modified into hairlike filaments. The thallus is decumbent and grows on other algae or sponges. Tetrasporangial stichidia are frequently formed in pairs with a forked pedicel. Introduction The genus Dasysiphonia was established by Lee and West (1979) with the type species D. chejuensis Lee et West from Cheju Island, Korea, a warm temperate region. Two additional species, D. concinna and D. doliiformis, were described by Schneider (1989) from North Carolina, U.S.A., also a warm temperate region. The Tsushima Warm Current, a western branch of

Journal

Botanica Marina – de Gruyter

Published: Jan 1, 1992

There are no references for this article.