Propagules of Alsidium corallinum (Rhodomelaceae, Rhodophyta)
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E. Cecere
Abstract
Alsidium corallinum C. Agardh from the Mar Grande of Taranto (Ionian Sea, Mediterranean Sea) reproduced primarily by propagules. These were starch-filled branchlets subtended by little-pigmented axes, which reached the maximum length of 6 mm with a diameter of about 300 μm. Propagules could both be branched up to three orders and form other propagules in their turn. On mature plants propagules originated by the transformation of the ultimate order branch whereas on over-wintering plants they derived from the transformation of lower order branches. On some individuals, some tetrasporangial branchlets grew as propagules after having formed a variable number of tetrasporangia. Some propagules also formed tetrasporangia. Generally, propagules detached above the little-pigmented axis which successively regenerated a new propagule. In the field, propagules settled on various substrata and propagule-derived plantlets were often observed. As the other species of Alsidium do not form propagules, propagule production by A. corallinum may be considered as a specific character.
Copyright © 2002 by Walter de Gruyter GmbH & Co. KG
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- Acknowledgement
- Meetings
Articles in the same Issue
- Contents
- Subject Index
- Taxonomical Index
- Author Index
- Growth and Biochemical Composition of the Diatom Phaeodactylum tricornutum at Different pH and Inorganic Carbon Levels under Saturating and Subsaturating Light Regimes
- Comparative Study of the Volatile Compounds from Some Black Sea Brown Algae
- Establishment of the Exotic Species Fucus evanescens C. Ag. (Phaeophyceae) in öresund, Southern Sweden
- Contribution to the Seaweed Flora of Namibia: New Records of Rhodophyta
- Observations on Cystoseira squarrosa De Notaris (Fucophyceae, Fucales), a Rare and Little Known Mediterranean Species, and Its Typification
- Taxonomic Notes on Marine Algae from Malaysia. VII. Five Species of Rhodophyceae, with the Description of Lomentaria gracillima sp. nov.
- A Reassessment and Reclassification of Species in the Genera Onikusa Akatsuka and Suhria J. Agardh ex Endlicher (Gelidiales, Rhodophyta) Based on Molecular and Morphological Data
- Mobility of Sulfate Ester during Structural Determinations of Red Algal Galactans
- Ceramium bisporum (Ceramiaceae, Rhodophyta), a New Record for the Mediterranean Algal Flora
- Taxonomic Notes on Marine Algae from Malaysia. VIII. Three Species of Laurencia (Rhodophyceae)
- Propagules of Alsidium corallinum (Rhodomelaceae, Rhodophyta)
- Macroalgal Volume: a Surrogate for Biomass in Some Green Algae
- Plant Resources of South-East Asia, No 15 (1). Cryptogams: Algae
- Acknowledgement
- Meetings
