The viral genus<unk>  is characterized by an elongated and highly filamentous and flexible nucleocapsid with helical symmetry.
Virus capsid is not enveloped and have a constant diameter of 1500-2500 nm and a width of 3 nm, or 9 nm.  They form kinked circles, which can collapse to form linear duplex structures, much like a spring.  The entire genome is 1100-1200 nucleotides long.
The best studied species under this genus is the Citrus psorosis virus.
Ophiovirus
Arenavirus
Arbovirus
Varicosavirus
Endornavirus
Coronavirus
Hantavirus
Picornavirus