Posts categorized as Ferns

Arthropteris climbing ferns

Arthropteris_tenella_climbing_reduced

I’m a co-author of a just-published scientific paper examining the evolution and classification of the Arthropteris climbing ferns. The paper was a real international collaboration, involving authors from China, Netherlands, France, United Kingdom, and New Zealand. It is unclear how many species there are of Arthropteris – probably somewhere between 10 and 20. They occur… Read more »

The long-and-short of lycophytes

Phylloglossum drummondii, less than 2 cm tall, in a Northland swamp.  For scale, there is a manuka fruit in the background.  Photo © Leon Perrie.

I don’t do plant-free holidays, and one of the species I wanted to photograph during my recent Northland holiday was the tiny and rare Phylloglossum drummondii. This diminutive plant has a Nationally Critical conservation ranking, because of its low numbers and the destruction of its swamp habitat. Finding it necessitates a winter (or early spring) field trip,… Read more »

Learn ferns in Wellington, 2

Are you interested in learning more about ferns, and in the Wellington region? The talk in March was so popular that Otari have asked me back for round two.  I’ll lead a walking-talk through the fernery at the wonderful Otari-Wilton’s Bush, Sunday 23rd June 2013, beginning 2pm from the Otari Information Centre. Interested in learning… Read more »

Ferns of Bristol’s stone walls

  • Maidenhair spleenwort (Asplenium trichomanes). Photo credit: Lara Shepherd.
  • Common polypody (Polypodium vulgare). Photo credit: Lara Shepherd.
  • Two forms of wall rue (Asplenium ruta-muraria). The plant on the right reminds me of New Zealand blanket fern. Photo credit: Lara Shepherd
  • The sori of Asplenium scolopendrium, said to look like centipede legs. Photo credit: Lara Shepherd

Whilst recently holidaying in Bristol in the UK I was amazed at the abundance and variety of ferns growing on the stone walls around the city.  The spleenwort or Asplenium ferns seem to be the most common ferns of this habitat. This genus also occurs in New Zealand and includes our hen and chickens fern. … 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 »

How to learn ferns

  • Close up of the scales of Cyathea (left) and the hairs of Dicksonia (right). Photos Leon Perrie, © Te Papa.
  • Trichomanes venosum. In Trichomanes, the reproductive structures are enclosed by a tubular, often trumpet-like structure. Photo Leon Perrie. © Te Papa.
  • Cardiomanes reniforme, kidney fern. More closely related to Hymenophyllum than Trichomanes, although the reproductive structures are at least superficially more similar to the latter. Photo Leon Perrie. © Leon Perrie.
  • Tmesipteris elongata, a fork fern. More closely related to ferns than to seed plants or lycophytes. Nevertheless, the relationship is a distant one, and it doesn’t look very fern like. There are at least five species in New Zealand, and they are usually epiphytic on tree ferns. Photo Leon Perrie. © Te Papa.

Last weekend I was out with the Kapiti-Mana branch of Forest and Bird, giving them an introduction to ferns. A few weeks back, I gave a similar walking-talk at Otari-Wilton’s Bush in Wellington. Many people find ferns an appealing group to learn. Aside from their iconic status in New Zealand, good learning resources are available, and… Read more »

A name change for strap ferns

Reproductive structures on the frond underside of Notogrammitis billardierei. Photo Leon Perrie. (c) Te Papa.

I recently co-authored a paper with Barbara Parris that investigated the scientific classification and naming of New Zealand’s strap ferns. If you’ve spent any time in New Zealand’s forests, you will have almost certainly seen the common strap fern. It has simple, undivided fronds up to 20 cm long, but usually much less. It is… Read more »

Learn ferns in Wellington

Loxsoma cunninghamii, in cultivation at Otari-Wilton's Bush.  This is the only species in the genus Loxsoma, and it is only found in New Zealand, where it grows naturally in the northern North Island.  Photo Leon Perrie.

Are you interested in learning more about ferns, and in the Wellington region? Te Papa’s Curator of Botany Leon Perrie is leading a walk through the fernery at the wonderful Otari-Wilton’s Bush: Sunday 24th March 2013, beginning 2pm from the Otari Information Centre.

Guide to Fijian tree ferns

Cyathea lunulata, recognisable by its pale scales and frond stalks.  The most prominent tree fern in the Fijian lowlands. Photo by Leon Perrie. (c) Te Papa.

An abundance of tree ferns is one of the botanical characteristics that New Zealand shares with many of the larger Pacific Islands. The number of different species is not especially high, but tree fern individuals feature prominently in many Pacific and New Zealand landscapes. Following my work in Fiji, I’ve produced an online guide to… Read more »