Tag Archives: on the field

Spiders

One aspect which makes orchid really appealing is their variety and beauty.  They are stunning pieces of artwork.  Here are some photographs of some of the spider orchids (Arachnorchis) that grow in South Australia.

The most common spider orchid is the King Spider Orchid, Arachnorchis tentaculata.  It is a stunning orchid, and one of the larger ones, being up to 10 cm across.

Arachnorchis tentaculata

Arachnorchis tentaculata

The Queen Spider orchid, Arachnorchis leptochila, is not as common in South Australia.  It is smaller than its sister, and has a more rigid flower.

Arachnorchis leptochila

Arachnorchis leptochila

There are many other spider orchids, but one of my favourite ones would have to be  Arachnorchis rigida.  It’s white petals are so crisp.  This is also quite a small flower.

Arachnorchis rigida

 

Four years

So it has now been four years since I have been observing this patch of helmet orchids (Corysanthes diemenica).  The first time I saw it in 2011 was probably the best year.  This year was not brilliant but it looked fairly good.  2013 was probably when I saw the least number of orchids flowering.

Corysanthes diemenica in 2011

In 2011 I saw the most flowers in this patch.

Corysanthes diemenica

In 2012, there were not many flowers out and is probably the least number of flowers I’ve seen at this patch.

Corysanthes diemenica

In 2013, there were not many flowers but a lot of leaves were up.

Corysanthes diemenica

So 2014 put in a fairly decent display.  A lot of the plants that were up were flowering.

And here is a picture of the little helmet orchids (taken on my phone) when the sun decided to come out!

Corysanthes diemenica

Greenhoods

I haven’t written for a while due to a very busy schedule and unfortunately have not been able  to see many orchids.  It’s very nice to see that I’ve reached 400 followers – which is a lot of people – thank you!  Yesterday, if you were following me on Twitter (@OrchidNotes) it would have been pretty easy to see that I was out orchid hunting.  The major find was the Diplodium robustum.

Diplodium robustum

There was this lovely patch of orchids with over a couple hundre of orchids in flower and many more plants in leaf.  It was a very spectacular display.

Two flowers with the rest in the background

Two flowers with the rest in the background

A cluster of flowers

A cluster of flowers

A bud on the left and a flower on the right

A bud on the left and a flower on the right

Looking into the flower and being able to see the labellum and column

Looking into the flower and being able to see the labellum and column

All these pictures were taken on my phone (Samsung Galaxy S4).  When I arrived home all the pictures I had taken are automatically uploaded to Google Images.  What was a surprise was that Google went through my pictures and picked the following as my best pictures from the day and then edited them for me!

It was fun to get out and see these wonderful orchids.  Have you been seeing any orchids recently?

The tiny Mosquito Orchid

Over the last week I have been frantically busy, and… well, wishing I had more time to go and hunt for some orchids.  So today’s post is going to be rather informal!  I do have some pictures to share with you, that were taken about this time of year, 15th May 2012.  They are of the Mosquito Orchid (Acianthus pusillus).  I have written about them before.

The flowers are very small, and the whole plant can stand up to 10 cm for a tall plant.  However, most seem to be closer to 6 or 7 cm high.  The following leaf shows the different growth stages.  If there has not been rain for some time, it generally stays the same size, but after a downpour, the leaf expands.

Acianthus pusillus

I thought the follow picture was quite cute.  It is so tiny, but as the buds open, it would probably become taller.

Acianthus pusillus

And here are some other, healthy specimens.

It is not uncommon, either to find fields of these orchids.

Acianthus pusillus

Enjoy your weekend, and hopefully I’ll see some orchids soon.

Orchid Hunter Australia Videos

Last year when I browsed through YouTube for orchid videos, I did not find many that were interesting.  However the other day, I had another look on-line  and it appears that a few Australians have been uploading their videos of orchids, and I would like to share with you some of them.

The two that leaped out at me are called Orchid Hunter Australia 1 & 2, filmed and produced by Julian Pitcher.  They are of Victorian orchids, but apply to orchid hunting right across Australia.  Let me congratulate Julian on doing such a great job, and I really look forward to seeing more of these videos.

Orchid Hunter Australia 1

In this first videos, Julian introduces us to some of the basic things to look for when orchid hunting, and I felt he really captured what it is like to look for orchids, and how they can blend into the bush.

Orchid Hunter Australia 2

This is probably my favourite of the two, as looking for orchids turns into a military expedition.  It really feels like that sometimes!  It was also good to find information about other plants and animals in the video, as they all influence the whole ecosystem.

Corysanthes diemenica

This is a short film  by Richard Davion which captures some of the joy of finding orchids.

What I enjoy about seeing films of orchids is that it captures the three diemnsional feel of the flowers, which is lacking in orchid photography.  Later on I would like to spent time producing my own videos with narration, and helping in identifying orchids.  But in the meantime I will enjoy what others are producing.  It is about making other aware that these tiny terrestrial orchids are there, and need to be protected.

For other orchid videos please visit the video page, or my YouTube channel.  Please help me share these videos.

Orchids in the Technological Age

In the last few years, we have seen some incredible developments in technology, particularly with electronics and multi-media devices.  For instant, walk down a street, and how many people will you see either listening to music from on ipod, or looking down at their smart phone.  How many of you are reading this on a phone?  So there have been some massive changes, and these can be used to help us appreciate orchids, either through photography or identification.

There are plenty of advantages coming from this technological development.  I’ve seen people ask the identification of some orchid they found, and instead of printing the photograph, they just leave it on their tablet or phone.  It certainly saves on paper.  Another outcome is that field guides, or apps for identification can be on you phone or tablet, so instead of carrying around a library of books, you only need to take a phone.  At present, I have four orchid books on my phone, and can check the identification and know straight away what I have found!  I think it is great.

Glossodia major ~ Purple Cockatoo Orchid

I have been amazed at the quality of the pictures that my phone takes.  For those wondering, my phone is the Samsung Galaxy S2, and it has an eight megapixel camera.  I still have to coax it to get the macro shots in focus, but I tend to use my hand to focus, and  then remove my hand away when I take the picture.  However I still have to do that with my compact digital.  Since I bought my phone, I’ve found myself using it as my primary camera, partly because it is so much easier to see the phone screen in the sunlight than my camera screen.

Arachnorchis tentaculata ~ King Spider Orchid

Now, the smart phones also come with GPS.  I have not experimented much with this, but I suspect it may not be as good as some of the GPSs that are on the market.  This is probably an area that still needs to be worked on, but there’s potential.

Petochilus carnea ~ Pink Fingers

You might be interested that all the pictures on this post were taken with my phone.  None of the pictures have been edited.  I still take out the compact digital camera if I am planning to video orchids (phone tends to focus on background rather than flower when filming) or if I need to use optical zoom.

Orchids of the Mount Lofty Botanic Gardens

Australia is a rich resource for orchids, especially terrestrial orchids which make up 82 percent of all the Australian orchids.  Terrestrial Orchids are found, mainly below the tropics in grasslands, heath lands, and eucalyptus forests.  Many are deciduous coming up in autumn/winter, flowering in winter/spring and dying down in summer.  Most rely on fungi to survive, and for germinated to occur.

What makes an orchid?

Orchids are always made up of five main segments: a labellum, column, two sepals and a dorsal sepal and two petals.

How do orchids reproduce?

Most orchids need to be pollinated by native bees, wasps and sometimes ants.  The introduced European Bee, because of its size, does not pollinate the flower, but can instead damage or destroy it.  Some orchids do not require a pollinator and are thus called self pollinating.

Orchids in South Australia

There are many different orchids; in fact, South Australia is home to over three hundred different species, some of which are yet to be described.  The Mount Lofty Botanic Gardens yields a variety of orchids, which will be covered in this leaflet.

Arachnorchis tentaculata King Spider Orchid

This species is relatively common in the Mt. Lofty Ranges, with flowers reaching ten centimetres across.  It can easily be distinguished by clubs on the end of its petals and sepals.

Diuris pardina Spotted Donkey Orchid

This attractive flower is distinguished by the spots on its sepals and labellum.  It received its common name as its petals reminded the English settlers of donkey ears.

Diuris orientis Wallflower Donkey Orchid

This distinctive orchid can be distinguished by its bright colours and particularly its labellum, which can be a shade of deep purple.  This species is also referred to as the Bulldog Orchid.

Diuris orientis x pardina Pioneer Donkey Orchid

It is not unusual to find hybrids of the donkey orchid.  It is often between these two species and can sometimes be difficult to distinguish from Diuris pardina.

Glossodia major Cockatoo Orchid

This purple flower is often found in fields, and is very common in the Mount Lofty Ranges.  It does vary in colour from purple to a pure white, with the different varieties growing together.

Pterostylis pedunculata Greenhood

This winter flowering orchid is often found in dense colonies which can number over a hundred plants.  It can be found in early spring in the Mt. Lofty Botanic Gardens.

Microtis arenaria Onion Orchid

This green flower breaks out of its cylindrical leaf.  Many people find the Microtis family difficult to identify due to its minute size.

Thelymitra rubra Sun Orchid

This pink sun orchid is one of three pink sun orchids.  It can be distinguished by the tufts on the top of the column.  It opens freely on warm days, when the temperature is over 25 degrees centigrade.

Thelymitra brevifolia Pepper Top Sun Orchid

This sun orchid has a distinctive red top on its column.  It can also be distinguished by red edges on its short broad leaf.  Its flower is smaller than Thelymitra rubra.

Thelymitra parviflora Sun Orchid

This common sun orchid has a blue flower and can be confused with a number of other blue sun orchids.  Like all sun orchids, it only opens on warm days, as this is when the pollinators are present.

There are many other types of orchids not considered in this leaflet.  However some field guides on orchids will enable identification of orchids which can be found in other parks and reserves around Adelaide or beyond.

Protecting Orchids

It is always a pleasure to find orchids but they do need to be protected and conserved.  Orchids can easily be eliminated by weeds which choke them.  Consequently, if orchids are found, it is an indication that the surrounding bush is good quality.  It is also important not to pick orchids.  Not only is it illegal, but orchids need their flowers to reproduce.

This is from a leaflet about the common orchids in the Mount Lofty Botanic Gardens.  For the printable version, see here.