Posts tagged with water

Te Papa is presenting an evening debate on water on 30 January in its 10-year series of Treaty Debates. This will be a provocative discussion which identifies the major issues in managing our freshwater resources and how these can be resolved.   A panel of speakers brings together a range of expertise and experience: Jacinta Ruru,… Read more »

Help with floating fern

Azolla plants often become red in full sunlight, and they can become so abundant that they carpet ponds, drains, and other still bodies of water. This is Azolla filiculoides in a pond on Mana Island, Wellington. Photo Leon Perrie. © Te Papa.

I’ve recently learnt that the introduced Azolla pinnata (ferny azolla) has been found in the Wellington region. I’m interested in its distribution and would be grateful for help in looking for more. Azolla plants are fairly easy to spot: look for a red plant covering still bodies of water. Azolla are ferns, believe it or… Read more »

Folding up to save water

Cross section of a leaf of a hooked grass under the microscope. Photo by C.A. Lehnebach (c) Museum of New Zealand Te Papa Tongarewa.

Did you know that Hook Grasses can control water loss by folding up their leaves?  Contrary to their common name,  Hook Grasses are not grasses but Sedges and they belong to the family Cyperaceae.  Sedges are commonly found in wet or poorly drained habitats. Hook Grasses, however, can be found in a much greater diversity of habitats. In New Zealand, Hook Grasses can grow… Read more »