rubra(Red Azolla; formerly known as A. filiculoides) is the only member of this genus and
of the family Azollaceae in
Tasmania. It is a very common native aquatic plant in
Tasmania. It is particularly common on farm dams and other still
water bodies. The plants are small (usually only a few cm across)
and float, but can be very abundant and form large mats. The plants
are typically red, and have very small water repellent leaves.