Scientific Name: Althenia preissii

Common Name: slender watermat

Family Classification (Clade): Monocots

Family: Potamogetonaceae

Threatened Species Status: Rare

Permit: It is an offence to collect, disturb, damage or destroy this species unless under permit.

Form Description: Slender annual herb with horizontal stems and thread-like leaves 1-6cm long.

Flowers: Flowers are either male or female, and solitary or in clusters.

Fruit: Achene – dry, leathery and oblong, 1.5mm long.

Municipality
Break O’DayClarenceFlindersGlamorgan-Spring BaySorellTasman
Plant Communities
No data available for this species
Habitat Notes

Fresh and brackish lagoons, and estuaries in the north-east, east coast and King and Flinders Island. Key sites include Calverts Lagoon, South Arm, and the Macquarie River.

General Notes

Semi-aquatic annual herb.

Propagation Calendar

  • Flowering Month
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Seed Collecting Month
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sowing Month
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Cutting Month
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Propagation Method
Impractical Propagation material is too difficult to collect or conditions for propagation or cultivation are too specialized.

Seed Information

Cutting & Division Information

Easily grown from division or cuttings.