Posts tagged with rare

Mining Denniston

Part of the area at Denniston set to be opencast-mined. Photo Leon Perrie. © Te Papa.

The mining on Denniston has been given the go-ahead by the Environment Court. Radio New Zealand report on the approval of the Bathurst Escarpment mine. The mine application covers just over one square kilometre. According to a report by the Department of Conservation, there are within that area at least eight plants and animals that… Read more »

Would you mine a rare population?

The umbrella fern Sticherus tener at a site within the planned Escarpment Mine on the Denniston Plateau. Photo Leon Perrie. © Te Papa.

The Escarpment Mine on the Denniston Plateau has been tentatively approved by the Environment Court, subject to suitable mitigation plans. One of the issues that may be under consideration is what to do about the site’s population of the Sticherus tener umbrella fern. Scoop news report: “…tentative nod for Denniston mine plan”. Sticherus tener has… Read more »

Rare success – rediscovery of several bryophyte species

The moss Dicranoweisia spenceri on a branch of a beech tree, Tongariro area.  Photo Leon Perrie, © Te Papa.

Te Papa’s botanists made several significant finds during their explorations accompanying the recent Bryophyte and Lichen Workshop. Led by Research Associate Peter Beveridge and Research Fellow Patrick Brownsey, the moss Dicranoweisia spenceri was found in some abundance at the site we investigated within Tongariro National Park.  This is great news because this is only the… Read more »

How Te Papa contributes to plant conservation

A specimen of the moss Dicranoweisia spenceri in Te Papa’s collection. This species has a conservation ranking of “Data deficient”; that is, not enough is known about its occurrence to classify the level of threat it faces. © Te Papa.

In the next two weeks, some of Te Papa’s Botany staff will be looking for several poorly known mosses and liverworts. For instance, the moss Dicranoweisia spenceri was recorded more than 60 years ago from near Mount Ruapehu but it hasn’t been reported from there since – is it still there? We’re going to check…. Read more »

Delight and Disaster in the Rubbish Heap

  • Unripe fruit of poroporo, Solanum laciniatum. Photo © Leon Perrie.
  • Solanum_laciniatum_fruit
  • Flowers of the two poroporo. Solanum laciniatum is on the left, Solanum aviculare on the right. Photo © Leon Perrie.
  • The two poroporo side-by-side. Solanum laciniatum is on the left, Solanum aviculare on the right. Photo © Leon Perrie.

I’m always keen to add to the number of plants I can recognise. Weeds are a profitable group in that respect. Recently my wife pointed out an interesting looking organic rubbish heap on the grounds of Massey University that was home to an odd-looking Solanum. Imagine my delight when, on closer inspection, I found it… Read more »

More rare maidenhair spleenwort.

  • These rocks are host to several plants of tetraploid maidenhair spleenwort.
  • asplenium_trichomanes_habitat1
  • DNA sequence data. The highlighted position is one of several DNA sites found by Lara that differ between the tetraploid (upper two samples) and octoploid (lower two samples) maidenhair spleenworts.
  • These rocks are host to several plants of tetraploid maidenhair spleenwort.]

The rare, tetraploid maidenhair spleenwort  (Asplenium trichomanes subsp. quadrivalens) has only recently been rediscovered in New Zealand.  Several people have contacted me with possible additional sightings. As described by the Scoop website, Jack Ritchie had a maidenhair spleenwort self-sow on a rock used to construct a water feature in his nursery, Tree Guys, in Otane…. Read more »

Identifying maidenhair spleenwort ferns.

  • blechnum_fluviatile_chambersii
  • The Button fern, Pellaea rotundifolia.
  • A maidenhair fern, Adiantum fulvum.
  • asplenium_flabellifolium1

The maidenhair spleenwort is a spleenwort fern (Asplenium) that (supposedly) looks like a maidenhair fern (Adiantum, see below). The 600 or so of the world’s spleenworts are characterised by having their reproductive structures in lines away from the margins of their fronds’ undersides. Two maidenhair spleenworts occur in New Zealand. They look very similar, but… Read more »

Rare fern rediscovered.

  • Maidenhair spleenwort.  This is the rare species, but the common one looks very similar.
  • Me, on top of the Ruahine Ranges.  No rare ferns sighted up here, but interesting nonetheless.
  • Me
  • Maidenhair spleenwort.  This is the rare species, but the common one looks very similar.

I’m one of the Botany Curators at Te Papa, and ferns are one of my specialties.  New Zealand has about 200 native ferns, and some of them are very rare.  We recently rediscovered one rare fern that had been ‘lost’.  I was beginning to wonder if it had become extinct, but fortunately it has not. … Read more »