Posts categorized as Ferns

More tangle – a new species of tangle fern

  • Frond underside of Gleichenia inclusisora. The white and flattish frond segments are one of its distinctive features. The undersides of the frond segments of Gleichenia dicarpa are whitish but pouched, while those of Gleichenia microphylla are flat but green. Photo Leon Perrie. © Te Papa
  • Except when very young, the lower stems of Gleichenia inclusisora are usually naked of scales or hairs, in contrast to the other Gleichenia species in New Zealand. Photo Leon Perrie. © Te Papa.
  • All four Gleichenia species presently recognised in New Zealand can grow together, to the extent of intertwining. Gleichenia inclusisora most commonly co-occurs with Gleichenia dicarpa. Gleichenia inclusisora (right) often has a shinier upper-surface, sometimes allowing the two species to be distinguished at a distance. However, this doesn’t always work as well as it does in this photo! Photo Leon Perrie. © Te Papa.
  • Close-up of the frond underside of Gleichenia inclusisora. The reproductive structures (sori) each comprise three sporangia (which produce the spores, the yellow dots) embedded in a pit in the frond. Some empty pits are visible. The distinctive rounded, bicoloured scales can also be seen at top left. Photo Leon Perrie. © Te Papa.

I’d like to introduce a new species of New Zealand fern, Gleichenia inclusisora. Our scientific description was published just before Christmas 2012. The recognition of this species edges the number of native New Zealand fern and lycophyte species nearly to 200. Abstract of paper describing Gleichenia inclusisora. Email me if you would like a pdf… 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 »

Where to find new species?

Biodiversity-treasure - inside one of Te Papa’s two botany collection stores.  Copyright Te Papa.

Where would you go to find a new species? Perhaps somewhere remote and little-visited, especially if it is ecologically unusual – New Caledonia maybe… Well, instead, how about inside Te Papa’s collections, because that’s where I first discovered a new species of Gleichenia tangle fern. A lot of biodiversity remains to be documented, particularly amongst… Read more »

Going (Lady) Gaga over ferns

The rock fern, Cheilanthes sieberi, a New Zealand relative of the newly re-named Gaga ferns. Photo Leon Perrie. © Te Papa.

USA fern taxonomists have created a minor stir after re-classifying a group of central American ferns into a new genus named Gaga, after the singer Lady Gaga. Abstract of the article formally naming the new genus Gaga. Youtube video of the taxonomists discussing their research. The researchers say the naming for Lady Gaga was in… Read more »

Curiosities, world-firsts, and monsters – fern spotting in Wellington

  • A so-called monstrous or crested frond of hound’s tongue fern, Microsorum pustulatum. The lobes of the fronds of hound’s tongue fern do not normally fork at their apices. Photo © Leon Perrie.
  • First record of the hybrid between Polystichum neozelandicum and P. silvaticum. Photo © Leon Perrie.
  • The reproductive structures of Polystichum silvaticum are naked, lacking the shield-like protective coverings that characterise its relatives. Photo © Leon Perrie.
  • Polystichum_silvaticum_6784_WrightHill4

On Saturday I joined the Wellington Botanical Society’s field trip to Wright Hill in Karori, Wellington. Wellington city would not be my first choice of locality for fern spotting, but we still found plenty to keep me interested. The filmy ferns Hymenophyllum flexuosum and Trichomanes endlicherianum are always pleasing finds. Although widespread, they are not… Read more »

Te Radar’s vegetable with charisma

Ota dina, Diplazium dietrichianum (or D. esculentum), Fiji.  Photo Leon Perrie. © Te Papa.

Which vegetables do you think have charisma?  In Tuesday night’s television programme Radar Across The Pacific, comedian Te Radar was given “fiddle fern” to eat.  He seemed to be impressed by it, describing it as having charisma. Te Radar was eating the young, unfurling fronds of a fern.  These still-coiled fronds are variously called croziers… Read more »