Amphibromus fluitans Graceful Swamp Wallaby-grass Small tufting perennial grass, spreading from creeping stems. Flowering stems lie below water with often only flowerhead emerging.
Azolla pinnata Ferny Azolla Floating perennial fern forming carpets over water. Fine feathery branched rootlets hang in the water.
Azolla rubra Pacific Azolla Floating perennial fern forming carpets over water. Fine unbranched roots hang in the water.
Baloskion tetraphyllum ssp. tetraphyllum Tassel Cord-rush Erect, bright green perennial tussock with smooth stems, feathery appearance from repeated thread-like branching along the stem. Spreads from woolly, creeping underground stems.
Baumea acuta Pale Twig-rush Slender tufted perennial sedge spreading from a long underground stem. Stiff flowering stems are flat to bi-convex and nodeless.
Baumea arthrophylla Fine Twig-sedge Tufted perennial sedge spreading from a long underground stem. Stiff erect flowering stems are ridged, round in cross section to 2.5mm wide with 1 node.
Baumea articulata Jointed Twig-rush Tufted perennial sedge with spreading from stout underground stems. Stiff, erect, nodeless flowering stems are ridged, round in cross section 4-10mm wide with partitions across the stem.
Baumea gunnii Slender Twig-sedge Slender tufted perennial sedge spreading from very short underground stems. Stiff erect flowering stems are ridged, round in cross section to 1.5mm wide, nodeless.
Baumea rubiginosa Soft Twig-sedge Tufted perennial sedge spreading from a short thick underground stem. Stiff erect flowering stems are ridged, round to bi-convex in cross section 1-5mm wide with 1-2 nodes.
Baumea tetragona Square Twig-sedge Rush-like clumping perennial sedge spreading from a long underground stem. Stiff flowering stems to 2mm diameter are square and nodeless.
Carex fascicularis Tassel Sedge Densely tufted sedge spreading from short underground stems. Flowering stems erect, rough above, 3-angled in cross section, to 1m high, leafy bract much longer than flowerhead.
Carex gaudichaudiana Fen Sedge Loosely tufted sedge spreading from long underground stems. Can form extensive mats. Flowering stems erect, rough, 3-angled to 90cm high, leafy bract longer than flowerhead.
Crassula helmsii Swamp Crassula Spreading perennial herb, rooting at leaf nodes, occasionally floating.
Cycnogeton alcockiae Southern Water-ribbons Slender tufted perennial herb with small plump tubers. Leaves and stems floating.
Cycnogeton procerum Water-ribbons, Nareli, Pol-an-go Robust tufted perennial herb with thick woody roots ending in cylindric tubers. Leaves and stems erect, leaves bending down to float with the current, more erect in still water.