New Zealand - final - Royal Botanic Gardens, Kew
New Zealand - final - Royal Botanic Gardens, Kew
New Zealand - final - Royal Botanic Gardens, Kew
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FIELDWORK<br />
High adventure<br />
To revitalise our collection of <strong>New</strong> <strong>Zealand</strong> plants,<br />
a team from <strong>Kew</strong> organised an expedition to South<br />
Island’s alpine slopes. Annette Dalton reports<br />
Celmisia traversii,<br />
one of 60 species of<br />
<strong>New</strong> <strong>Zealand</strong> daisy,<br />
has russet-edged leaves<br />
Above: Joanne Everson<br />
braved all weathers<br />
to make collections –<br />
even sleet and snow<br />
Top: Annette Dalton<br />
taking field notes in the<br />
shade of an Aciphylla<br />
scott-thomsonii<br />
Above: known as the<br />
South Island edelweiss,<br />
Leucogenes grandiceps<br />
has white woolly flowers<br />
Top: crimson-fruited<br />
Pentachondra pumila<br />
thrives on damp,<br />
peaty heathland<br />
PHOTOGRAPHS: SVEN LANDREIN<br />
Starting and finishing<br />
in Christchurch, the<br />
expedition covered<br />
much of South Island<br />
FRANZ JOSEF<br />
GLACIER<br />
INVERCARGILL<br />
SOUT HERN ALPS<br />
DUNEDIN<br />
ARTHUR’S<br />
PASS<br />
CHRISTCHURCH<br />
The dramatic flower<br />
spike of Aciphylla<br />
kirkii – ripe for<br />
seed collection<br />
Muehlenbeckia<br />
axillaris forms dense<br />
mats of glossy foliage,<br />
with tiny flowers<br />
The Davies Alpine House at <strong>Kew</strong> has<br />
turned many heads recently and<br />
elicited varied opinions. But its very<br />
existence delights Joanne Everson<br />
and me, as it was the catalyst that sparked<br />
our collecting trip to <strong>New</strong> <strong>Zealand</strong> and led<br />
to us tramping up the country’s Southern<br />
Alps in search of seeds and herbarium specimens<br />
in February and March this year.<br />
The Rock Garden at <strong>Kew</strong> is laid out geographically<br />
and represents the flora of the<br />
world’s alpine regions. However, to make<br />
way for the new Davies Alpine House, the<br />
Australasia and <strong>New</strong> <strong>Zealand</strong> section had<br />
to be cleared, and this provided the perfect<br />
opportunity to reassess the collection. In so<br />
doing, Joanne Everson, team leader of the<br />
Rock Garden, soon discovered how difficult<br />
it is to obtain naturally sourced <strong>New</strong><br />
<strong>Zealand</strong> native plants that have adequate<br />
provenance and field data. <strong>Kew</strong>’s remaining<br />
collection had only 23 naturally sourced<br />
<strong>New</strong> <strong>Zealand</strong> plants and, considering that<br />
there are 60 species of Celmisia (<strong>New</strong><br />
<strong>Zealand</strong> daisy) alone, <strong>Kew</strong>’s <strong>New</strong> <strong>Zealand</strong><br />
alpine collection was in dire straits – a collecting<br />
trip was essential.<br />
Neither Joanne nor I had taken part in a<br />
<strong>Kew</strong> collecting trip before, let alone organised<br />
or led one, but Mercy Morris of the<br />
Southern Hemisphere Garden at Wakehurst<br />
Place joined us, and so did Sven Landrein,<br />
Sharon McDonald and Dr Dick Brummitt<br />
of the Herbarium, where the <strong>New</strong> <strong>Zealand</strong><br />
collection needed updating. It began to look<br />
like a very exciting project.<br />
Joanne and I soon discovered that <strong>Kew</strong><br />
had sent few official collecting trips to <strong>New</strong><br />
<strong>Zealand</strong>, so we had to begin the collection<br />
permit applications from scratch. Most of<br />
our collecting was to be done on Department<br />
of Conservation (DOC) sites, as these<br />
were mostly high mountain areas and gave<br />
<strong>Kew</strong> the most ethical avenue for collecting.<br />
In <strong>New</strong> <strong>Zealand</strong>, 80 per cent of the flora is<br />
endemic, so biosecurity laws are appropriately<br />
strict and the permit application<br />
process complicated. We also had to supply<br />
a target list of all the species we might wish<br />
to collect and negotiate the conditions of our<br />
permit, not only with the DOC but also with<br />
the Maori tribe local to the collection areas.<br />
Making the correct contacts and putting<br />
together our permit application was timeconsuming<br />
– our collection target list alone<br />
took months to compile. We were advised<br />
to omit any species that were rare, threatened,<br />
endangered or had a restricted range.<br />
Our complete list contained 937 species, of<br />
which we hoped to collect roughly one-fifth.<br />
18 l KEW Autumn 2006<br />
KEW Autumn 2006 l 19
FIELDWORK<br />
Left: Hebe epacridea,<br />
a dwarf evergreen<br />
shrub, grows in rock<br />
crevices and scree<br />
Top: Astelia nervosa<br />
forms large clumps of<br />
beautiful sword-like<br />
silver foliage<br />
Above: Joanne’s<br />
photographs provide<br />
a valuable record of a<br />
plant and its habitat<br />
Above: it’s easy to see<br />
how Raoulia eximia<br />
got the common name<br />
of vegetable sheep<br />
Top: the spectacular<br />
Franz Josef Glacier<br />
lies in the Westland<br />
National Park<br />
Above: you need to<br />
avoid the sharp spines<br />
when gathering seed<br />
from Aciphylla aurea<br />
Above: the red rata vine,<br />
Metrosideros fulgens,<br />
produces a showy<br />
display of blooms<br />
Above: Annette Dalton<br />
gets down to work<br />
collecting some of the<br />
low-growing species<br />
Above: with large daisy<br />
flowers, Celmisia<br />
spectabilis is endemic<br />
to <strong>New</strong> <strong>Zealand</strong><br />
PHOTOGRAPHS: SVEN LANDREIN<br />
In October 2005, after eight months of<br />
correspondence with <strong>New</strong> <strong>Zealand</strong>, Joanne<br />
and I travelled to South Island to complete<br />
our negotiations in person and seek advice<br />
on collecting sites. We hoped to collect in all<br />
of the four conservancies on South Island,<br />
and met with botanists who offered all the<br />
help and facilities we might need. The most<br />
comprehensive help in identifying collecting<br />
sites came from Dr David Given, the curator<br />
at Christchurch <strong>Botanic</strong> <strong>Gardens</strong>, who sadly<br />
passed away in November 2005 – we feel<br />
very lucky indeed to have met him.<br />
We also visited Dunedin <strong>Botanic</strong> Garden<br />
(DBG), which re-awakened a Dunedin–<strong>Kew</strong><br />
connection from 100 years ago, when the<br />
<strong>Kew</strong>-trained curator David Tannock used to<br />
send his gardeners to <strong>Kew</strong> for training, and<br />
<strong>Kew</strong> reciprocated. DBG was most helpful<br />
and decided that three staff members would<br />
join us for a week each. We returned to <strong>Kew</strong><br />
and <strong>final</strong>ly received our permit – we had three<br />
months to make all the arrangements. Our<br />
expedition (a term that amused the DOC<br />
botanists, as they thought it a little grand)<br />
began on 5 February 2006, when we set off<br />
on our 27-hour journey to Christchurch.<br />
Our collecting trip traversed about twothirds<br />
of South Island, and we collected at<br />
heights of 50–2,000m above sea level. And<br />
some days were long – we rose at 6.30am<br />
and didn’t return to our cars until 9pm. Then<br />
we had to get back to our lodgings, cook<br />
dinner and clean the seeds we’d collected.<br />
We developed a strict procedure in the<br />
field – when we identified a specimen from<br />
which we hoped to collect, we first determined<br />
its species name, then ensured there<br />
were at least five fruiting specimens in the<br />
general area. If there were, we then tested<br />
the seed quality. When we made a collection,<br />
we had to ensure we stuck to the amount our<br />
permit allowed us to collect. Then there were<br />
the field notes – to remind us of all the information<br />
we had to record about each species,<br />
Mercy created an invaluable field-note sheet.<br />
We began our field trip in Christchurch,<br />
and travelled west through Arthur’s Pass,<br />
where our collection sites included Temple<br />
Basin, Dobson Nature Walk, Otira Valley,<br />
Foggy Peak and Craigieburn Forest Park.<br />
These provided a mix of bog plants, forest<br />
dwellers, high alpines and shrubby material,<br />
including cushion plants such as Donatia<br />
novae-zelandiae and Phyllachne colensoi.<br />
When we came across a great example of the<br />
renowned plant known as vegetable sheep,<br />
Raoulia eximia, at 1,715m on Foggy Peak,<br />
our excitement was only curbed by the high<br />
risk of being blown off the scree slope.<br />
The Southern Alps split much of South<br />
Island into wet and dry areas – rainfall in<br />
the Otago region, east of the divide, averages<br />
300mm a year, while in the Fiordland,<br />
west of the Alps, it averages 8m a year. As<br />
we moved south towards the Franz Josef<br />
Glacier, the difference in weather across the<br />
divide became apparent. South of the glacier<br />
it improved for our trip to the Rob Roy<br />
Valley, home of the outstanding Aciphylla<br />
scott-thomsonii. We went on to the Pisa<br />
Conservation Area, where I first came across<br />
the charming Dracophyllum muscoides, and<br />
also to the Rastus Burn Recreation Reserve.<br />
We visited Rastus Burn in October 2005 and<br />
saw a Psychrophila obtusa in flower. So, on our<br />
return, we went to the same spot and found<br />
enough fruiting patches to make a collection.<br />
We continued south and east to Dunedin<br />
<strong>Botanic</strong> Garden, where Sven, Sharon and<br />
Mercy gave a talk to more than 200 people.<br />
Heading north again, one of our last collecting<br />
days was in the Hinewai Reserve, but<br />
sadly the birds had beaten us to the bounty of<br />
the only fruiting Rhopalostylis sapida (nikau<br />
palm). We eventually arrived in Christchurch<br />
and delivered our specimens to the Allan<br />
Herbarium to be frozen and sent on to <strong>Kew</strong>.<br />
They were then transferred to the Millennium<br />
Seed Bank at Wakehurst, where they<br />
were put in the dry room to await our return.<br />
Back in England, we divided the 219 seed<br />
collections we made into batches for sowing<br />
or banking. Of the 69 alpine collections<br />
sown, 49 species have germinated so far. The<br />
woodier species will be sown in Wakehurst’s<br />
nursery this autumn, and most will eventually<br />
fill up the <strong>New</strong> <strong>Zealand</strong> beds of the<br />
Southern Hemisphere Garden there. Some<br />
will also go to <strong>Kew</strong>. The <strong>New</strong> <strong>Zealand</strong> and<br />
Australasia section of <strong>Kew</strong>’s Rock Garden<br />
will be completed and ready to receive new<br />
residents by Christmas.<br />
It’s very rewarding to see the new plants<br />
growing on from the seed we collected. And<br />
despite some long, intense days in the field,<br />
we learnt a huge amount and had a lot of<br />
fun. The expedition was a great confidencebuilding<br />
experience and one we will draw<br />
on as we build up the <strong>New</strong> <strong>Zealand</strong> and<br />
Australasia collection for the future. n<br />
Annette Dalton is the horticultural manager<br />
of Hardy Display at <strong>Kew</strong><br />
20 l KEW Autumn 2006<br />
KEW Autumn 2006 l 21