Polysiphonia ceramiaeformis | |
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Samples of Polysiphonia ceramiaeformis algae | |
Scientific classification
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(unranked): | Archaeplastida |
Division: | Rhodophyta |
Class: | Florideophyceae |
Order: | Ceramiales |
Family: | Rhodomelaceae |
Genus: | Polysiphonia |
Species: | P. ceramiaeformis
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Binomial name | |
Polysiphonia ceramiaeformis P.Crouan & H.Crouan
|
Polysiphonia ceramiaeformis, also called banded siphon weed, [1] is a small red algae ( Rhodophyta), in the genus Polysiphonia. Individuals are irregularly branched with the branches extending up to 5.5 centimetres (2.2 in) from a central node and ending in dense tufts of fibres. [2]
This small red algae lacks a clearly to be seen main axis. Each branch is formed of axial cells with 10 - 12 periaxial cells of equal length, with forcipate incurved tips. [3] It is densely branched and attached by tangled prostrate axes. All axes are ecorticate. The rhizoids are numerous [2]
The plants are dioecious. The alga bears spermatangial branches on a cylindrical axis. Cystocarps are oval with a narrow ostiole. The tetraspores cells divide to forms cells in fours, these occur in a spiral series. [2]
In pools at low water in sheltered sites. [2]
Very rare on the British Isles. [4] Recorded from a few sites in Dorset, [5] [2] also recorded from north west France and the Mediterranean. [2]
Polysiphonia ceramiaeformis | |
---|---|
![]() | |
Samples of Polysiphonia ceramiaeformis algae | |
Scientific classification
![]() | |
(unranked): | Archaeplastida |
Division: | Rhodophyta |
Class: | Florideophyceae |
Order: | Ceramiales |
Family: | Rhodomelaceae |
Genus: | Polysiphonia |
Species: | P. ceramiaeformis
|
Binomial name | |
Polysiphonia ceramiaeformis P.Crouan & H.Crouan
|
Polysiphonia ceramiaeformis, also called banded siphon weed, [1] is a small red algae ( Rhodophyta), in the genus Polysiphonia. Individuals are irregularly branched with the branches extending up to 5.5 centimetres (2.2 in) from a central node and ending in dense tufts of fibres. [2]
This small red algae lacks a clearly to be seen main axis. Each branch is formed of axial cells with 10 - 12 periaxial cells of equal length, with forcipate incurved tips. [3] It is densely branched and attached by tangled prostrate axes. All axes are ecorticate. The rhizoids are numerous [2]
The plants are dioecious. The alga bears spermatangial branches on a cylindrical axis. Cystocarps are oval with a narrow ostiole. The tetraspores cells divide to forms cells in fours, these occur in a spiral series. [2]
In pools at low water in sheltered sites. [2]
Very rare on the British Isles. [4] Recorded from a few sites in Dorset, [5] [2] also recorded from north west France and the Mediterranean. [2]