  |
RHODOPHYTA (red algae) |
Polysiphonia
nigrescens (Hudson) Greville, 1833 |
|
| Lenght: <20 cm Width: 0.1-1 mm |
|
 |
|
Thallus thin filiform, firm to coarse,
bushy, dark purple to black. Pericentral cells 12-20.Litophyte and
epiphyte. In sublittoral, mainly in sheltered localities. Rare, boreal
species. |
