Posts written by Leon Perrie

Goodbye to the lettuce liverwort – it’s going extinct

A cluster of Petalophyllum preissii plants, with my finger for scale. Photo Leon Perrie. © Te Papa.

A highlight of my recent South Island fieldwork was helping to survey the last remaining New Zealand population of the liverwort Petalophyllum preissii.  It’s a distinctive looking plant, a bit like a little lettuce, and about the size of a fingernail. Seeing it was special because I likely won’t have the opportunity again.  You’ll probably never… Read more »

Solomon Islands’ Expedition: the ferns

The frond underside of the weedy Pityrogramma calomelanos fern is coated in white powder. It can be knocked off to make fern patterns. Photos Leon Perrie. © Te Papa.

During the recent expedition to central Guadalcanal in the Solomon Islands, my job was to document the ferns and lycophytes. This was at the invitation of Marika Tuiwawa (University of South Pacific) who led the expedition’s plant team. It built on my previous experience working with ferns in Fiji, New Caledonia, Australia, and New Zealand. (As… Read more »

Solomon Islands’ Expedition: the camp

Part of the main sleeping area at Valevahalo. “Beverley Hills” is on the ridge in the background, and the kitchen down the other side of that ridge. Photo Leon Perrie. (c) Te Papa.

Valevahalo was the main camp for our recent Solomon Islands’ expedition. Sited at about 800 m above sea level, it is deep in the jungle of the northern foothills of Guadalcanal’s Mount Popomanaseu. I was there for eight nights, with two additional nights at a satellite camp at the nearby Haviha River. For background on the expedition,… Read more »

Plant collecting in south Canterbury and Marlborough

On our first collecting day, we set a new elevation record for Te Papa’s new 4WD, with 1100 m on Mount Studholme near Waimate.  We smashed that with 1700 m on our last collecting day, on top of Marlborough’s Black Birch Range.  The snow-capped Tapuae-o-Uenuku of the Inland Kaikoura Range is the backdrop. Photo Leon Perrie. © Te Papa.

An important function for Te Papa’s natural history collections is to document the plants and animals we have in New Zealand. What species are present, how can they be distinguished, and where do they occur? These questions need addressing before our biodiversity, both indigenous and exotic, can be managed in an informed manner. It is… Read more »

Bolstering local plant populations through propagation

Muehlenbeckia astonii SinclairHead 10_reduced

Increasing plant populations through propagation is one way to help threatened species.  Last week, Wellington City Council biodiversity staff collected cuttings and seed from several plant populations in the Te Kopahou area on the coast south of Wellington.  I tagged along. The targeted species Spectacular, steep habitat Wellington’s south coast is a spectacular landscape, and… Read more »

How many plants are in New Zealand?

  • The fork fern Tmesipteris tannensis is indigenous to New Zealand, being present here without human intervention. Moreover, it is endemic, being indigenous to New Zealand and nowhere else in the world. About 45% of the indigenous ferns and 80% of the indigenous seed plants are endemic to New Zealand. Photo Leon Perrie CC BY-NC.
  • Stereocaulon ramulosum is a common New Zealand-indigenous lichen. I suspect few New Zealanders would know it, which is symptomatic of the attention given to lichens, even though they contribute significant biomass to many ecological communities. Photo Leon Perrie CC BY-NC.
  • African club moss (Selaginella kraussiana) is an introduced lycophyte (and not a moss). It is very invasive, even into relatively undisturbed indigenous forests. It carpets the ground, suppressing the regeneration of indigenous plants. WELT P026410. Photo Leon Perrie. © Te Papa CC BY-NC-ND.
  • Anyone visiting New Zealand’s coast is likely to have seen Neptune’s necklace (Hormosira banksii). It is a very common, indigenous brown seaweed. But many New Zealand seaweeds are only poorly known. Photo Leon Perrie CC BY-NC.

I gave a talk on “Understanding and valuing our plants” at the recent open day of Otari-Wilton’s Bush in Wellington. I’m very interested in why New Zealand’s native species might be valued. I am hoping you can help me think about that – I welcome your input; look out for an upcoming blog post. But… Read more »