Rhodophyta

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Rhodophyta

members of the Thallophyta division Rhodophyta, in which the chlorophyll is masked by PHYCOERYTHRIN. Rhodophytes vary from filamentous forms to those with an extensive thallus, and have gametes that are nonmotile.
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Dumontiae and other rhodophytes have been confirmed in vivo and in vitro to inhibit growth of several viruses, notably herpes simplex I and II, and HIV.
Diatoms were the most abundant and diverse algal organisms (359 taxa), followed by chlorophytes (121), Cyanobacteria (42), euglenophytes (31), xanthophytes (14), chrysophytes (12), rhodophytes (6), dinophytes (6), and cryptophytes (3).
This is what happens in the rhodophytes and cyanobacteria, which use the nitrogen of their phycobilin pigments for cell growth if there are no external sources of nitrogen compounds.
This is with the addition of eight chlorophytes, one chrysophyte (a macroscopic tubicolus diatom species), two phaeophytes and five rhodophytes (Table 1).
Finally, the expressed morphologies of two common rhodophytes found in all microhabitats, Chondracanthus spinosus (Kutzing) and Pterocla-diella capillacea (Gmelin), are explored and the fitness benefits associated with the observed morphology considered.
On the coasts of Brittany and Monterey, the upper circumlittoral consists of mixed populations of corallinaceous algae (Mesophyllum, Lithothamnium, Lithophyllum), laminar rhodophytes (Rhodymenia, Fryeella, Phycodrys), and suspensivorous animals (sponges like Axinella, alcyonarians like Alcyonium, or Paralcyonium), but they do not form communities as complex as those in the Mediterranean.
Consequences of light limitation for carbon acquisition in three rhodophytes.
262 A typical mediolittoral zonation pattern in the northwestern Mediterranean consists of an upper layer consisting of barnacles (Chthamalus), an intermediate level of the laminar rhodophytes (Rissoella verruculosa), and a lower level with mussels (Mytilus galloprovincialis) and some coralline algae (Corallina elongata).