| Choreocolax polysiphoniae | |
|---|---|
 | |
| Cross section of Choreocolax polysiphoniae on epiphytic red algae Polysiphonia lanosa | |
Scientific classification  | |
| (unranked): | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Ceramiales |
| Family: | Choreocolacaceae |
| Genus: | Choreocolax |
| Species: | C. polysiphoniae |
| Binomial name | |
| Choreocolax polysiphoniae | |
Choreocolax polysiphoniae is a minute marine parasitic alga in the division Rhodophyta.
This small parasitic alga grows on the red alga Polysiphonia lanosa . It grows as an irregular sphere on the fronds of the alga, reaching no more than 1 mm in extent. [3] [4] [5]
Parasitic on Polysiphonia lanosa, the filaments grow into the host. [3]
The species has been reported from North Russia and the Pacific. [3] In Ireland it has been confidently recorded from counties Down, Antrim [6] and Waterford [7] and at scattered sites around the British Isles including the Shetland Islands. [8]
Cruciate tetrasporangia are produced all year round in the cortex. The gametangial are dioecious and are produced in spring and summer. [3]
Polysiphonia is a genus of filamentous red algae with about 19 species on the coasts of the British Isles and about 200 species worldwide, including Crete in Greece, Antarctica and Greenland. Its members are known by a number of common names. It is in the order Ceramiales and family Rhodomelaceae.
Polysiphonia lanosa is a common species of the red algae (Rhodophyta) often to be found growing on Ascophyllum nodosum.
Polysiphonia atlantica is a small filamentous species of red marine algae Rhodophyta. The thalli form small tufts up to 3 cm long. The axes are ecorticate consisting of axial cells surrounded by four periaxial cells.
Polysiphonia denudata is a small red alga, Rhodophyta, growing as tufts up to 20 cm long without a main branch axis.
Polysiphonia devoniensis is a species of marine algae. It is a small red alga in the Division Rhodophyta. It is a species new to science only described recently and first published in 1993.
Polysiphonia elongata is a small red marine algae in the Rhodophyta.
Polysiphonia elongella Harvey in W.J. Hooker is a branched species of marine red algae in the genus in the Polysiphonia in the Rhodophyta.
Polysiphonia fibrata is a species of Polysiphonia that grows as small dense tufted and finely branched marine alga in the Rhodophyta.
Polysiphonia fibrillosa (Dillwyn) Sprengel is a species of marine red alga in the Rhodophyta.
Polysiphonia foetidissima Cocks ex Bornet is small red marine alga in the Rhodophyta.
Polysiphoides fucoides (Hudson) Greville is a common marine alga in the Division Rhodophyta.
Polysiphonia furcellata (C.Agardh) Harvey is small marine red alga in the Division Rhodophyta.
Melanothamnus harveyi, Harvey's siphon weed, is a small marine red alga in the division of Rhodophyta.
Polysiphonia nigra is a species of marine alga in the division Rhodophyta.
Polysiphonia opaca (C.Agardh) Moris et De Notaris is a small marine alga in the division Rhodophyta.
Polysiphonia stricta is a small red marine alga in the Division Rhodophyta.
Vertebrata fruticulosa(Boergeseniella fruticulosa Kylin) is a small marine alga in the Division Rhodophyta.
Ceramium echionotum is a small marine alga in the division Rhodophyta.
Ceramium shuttleworthianum is a small marine red alga.
Osmundea hybrida is a fairly small marine red alga.