Category Archives: Monthly

In Summer…

After having four consecutive days of over 40C (104F) heat, I’m pretty sure that there are not many orchids left in flower now.  However a weeks ago, the hyacinth orchids were in full glory.  Dipodium roseum is one of the most photographed orchids in Australia.  It is often found on road side edges which makes it easy to spot.

Dipodium

It is one of the largest terrestrial orchids and can grow a few feet high.  It grows around Stringy Bark trees as it needs a special fungi to survive as it has no leaves.  Can you spot it/them in the picture below?

DSC02938

This particular species is distinguished by having stripes (rather than spots) on the labellum.  The flowers vary from pink to a soft white, and can be growing on either a dark stem on green stem.  Personally I prefer the pink flowers on the dark stems and sometimes seem to forget the other variety.  Here are two variations growing together.

dipodiumKeep cool/warm depending where you are!

Orchids in the forest

Forestry SA land has some of South Australia’s most beautiful and exquisite orchids growing on its lands.  While it is predominately focused on pine tree plantations, it does recognize the importance of conserving our rare and beautiful orchids.  Here is a short film by Julian Pitcher, from Victoria, sharing his finds on Forestry land from a few months ago.

The small ducks came out a week or so after filming.

Enjoy.

Lemon scented

Thelymitra antennifera – Rabbit Ears

The genus of sun orchids can be quite daunting to identify, but thankfully in South Australia Thelymitra antennifera is the most commonly encountered yellow sun orchid with its distinctive column.  It has two common names.  Rabbit ears describe the dark red “ears” that sit on top of the column.  The second name is Lemon Scented Sun orchid, which describes the soft scent emitted by these flowers.

Thelymitra antennifera

This sun orchid has thin grass like leaf with a dark purple base.  The plants quite commonly have several flowers on them.  The flowers are relatively large compared to the small, short stem that holds them.

The Rabbit Ears sun orchid can be found right across Australia from Western Australia into Victoria and Tasmania.  It tends to enjoy a slightly opened woodland, and can be often found on the top of ridges and further down in the valleys.  It is common, and has a long flowering range.  Depending on the region, it can be seen in flower from August to November on any warm day.

Know Them

Nice and Close

Its nice that I am discovering more features on the new camera, or rather my very kind brother is showing me them as he finds them.  Anyway, three weeks ago when I photographed the Arachnorchis rigida, I felt that the pictures had way to much blue in them.  Since then, I learnt how to adjust the white balance, and so now the pictures are closer to the true colours.

Arachnorchis tentaculata

I love this picture of these two spider orchids, Arachnorchis tentaculata, which are hugging each other.  I did not realize that they had two different stem colours, until I looked at the photograph.  Interestingly, the digital camera did not show this as vividly.  Below is another view of the same two orchids.

Arachnorchis tentaculata Another orchid that I saw recently was of the Purple Cockatoo Orchid, Glossodia major.  There was a lovely patch of well over a hundred plants.  I had first found this patch while all the orchids were in bud, but when I went back two weeks later, more than half had finished flowering.  This species has a lot of diversification in colour from a deep purple right through to pure white.

Glossodia major

Glossodia major

Enjoy your weekend!

The Mayfly

Nemacianthus caudatus – Mayfly Orchid

Acianthus pusillusThis little orchid is very similar to Acianthus pusillus but flowers in spring instead of autumn.  It has similar heart-shaped leaves to Acianthus pusillus, but the flowers are very differentThey are often found growing together.

The Mayfly orchid has graceful long sepals compared to a relatively small flower.  The whole flower stalk is a dark red, which makes it a challenging subject to photograph in low light.

It is often found growing at the base of tress in the leaf litter, in small colonies.  The flowers attracts its pollinator, a small gnat, by giving off a musty odour which we can also detect.  Once pollinated, the ovaries (pictured left) swell with many tiny seeds within.

Nemacianthus caudatus.docx

Know Them

A beauty

A couple of posts ago, I mentioned that I wanted to see some Arachnorchis rigidaI was able to do this last week, and they looked as beautiful as ever.

Arachnorchis rigida

Arachnorchis rigida

These orchids are quite small as can be seen in this picture.  There were fourteen plants in flower with two in bud.

Arachnorchis rigida

There were quite a lot of other orchid species that I saw both in bud and in flower.  It was a very good site, and I am looking forward to heading back soon to get some more photographs.  Have a good weekend.

Orchids in the City Part 2

So today I got my hands dirty at the Vale Park open day.  (See here for Part 1)  I had the privilege of planting out some orchids, namely Thelymitra antennifera, also known as the Lemon Scented Orchid or the Rabbit ears sun orchid.  The orchids I planted were very young plants, only just beginning to grow.  They had been propagated from seeds, and grown in a flask.  Some were just tubers, while others did have some leaves just beginning to emerge.  Unfortunately, I forgot to photograph any before planting.  After we had finished planting, this is what they looked like.

Thelymitra antennifera plants

This species has nice yellow flowers, which gives of a soft lemon scent.  They only open when it is warm enough, as this is when the pollinators are about.

Thelymitra antennifera

A nice specimen of Thelymitra antennifera found in the wild

During the last fortnight, many of the Caladenia latifolia had been pollinated and were forming nice capsules.  This means there should be lots of seeds, and will help these orchids spread.

Caladenia latifolia

Some other orchids which had opened during the last fortnight included Diuris behrii and Diuris orientis.

Vale park is not the only place in Adelaide where orchids have been successfully introduced.  On Gilbert Street in North Adelaide there are some more Caladenia latifolia which are thriving.  This is a smaller site, and did not have as many species.

Caladenia latifolia

So I’ll finish today’s post with a picture that I took near these orchids, right in the centre of the city!

Adelaide Australia