Rivularia (cyanobacteria)



Rivularia is a genus of cyanobacteria of the family Rivulariaceae.

Description
Rivularia is found growing on submerged stones, moist rocks, and damp soils near the riverside. It is found in colonies, and the trichomes are radially arranged within a colony, with each trichome wholly or partially surrounded by a gelatinous sheet. The trichomes have a basal heterocyst. Each trichome has a narrow aptic portion which is whip- or tail-like consisting of a row of small cells. Akinetes are absent in Rivularia. The species multiply with the aid of hormogonia and heterocyst.

Species

 * Rivularia atra Roth ex Bornet & Flahault, 1886
 * Rivularia bullata (Poir) Berkeley ex Bornet & Flahault, 1886
 * Rivularia haematites (De Candolle) Bornet & Flahault, 1886
 * Rivularia jaoi H.-J.Chu, 1952
 * Rivularia nitida C.Agardh ex Bornet & Flahault, 1886
 * Rivularia thermalis Y.-Y.Li, 1984
 * Species brought into synonymy:
 * Rivularia cornudamae Roth, 1797 : synonym of Chaetophora lobata Schrank, 1783
 * Rivularia elegans Roth, 1802 : synonym of Chaetophora elegans (Roth) C.Agardh, 1812
 * Rivularia endiviaefolia Roth, 1798 : synonym of Chaetophora lobata Schrank, 1783
 * Rivularia lloydii P.Crouan & H.Crouan, 1867 : synonym of Brachytrichia lloydii (P.Crouan & H.Crouan) P.C.Silva, 1996
 * Rivularia multifida Weber & Mohr, 1804 : synonym of Nemalion multifidum ( F.Weber & D.Mohr) Chauvin, 1842
 * Rivularia plana Harvey, 1833 : synonym of Isactis plana (Harvey) Thuret ex Bornet & Flahault, 1886
 * Rivularia rubra (Hudson) Wahlenberg, 1826 : synonym of Nemalion helminthoides (Velley) Batters, 1902
 * Rivularia tuberiformis Smith, 1809 : synonym of Leathesia marina (Lyngbye) Decaisne, 1842
 * Rivularia vermiculata Smith, 1808 : synonym of Mesogloia vermiculata (Smith) S.F.Gray, 1821
 * Rivularia zosterae Mohr, 1810 : synonym of Eudesme virescens (Carmichael ex Berkeley) J.Agardh, 1882