So many of us are interested in preserving our native flora and fauna, and for NOSSA it is the native orchids. But many of us may not be aware of how we can play a significant role in minimising our impact upon the environment so that they are still around for our children and grandchildren
The following video is a brief overview of two documents that NOSSA has produced. They are guidelines to help individuals know how they can minimalize their impact on the environment and so assist in the conservation of our beautiful and unique native orchids.
Below are the links to the documents referred to in the video:
In July, NOSSA resumed face to face meetings but with an innovation. We introduced Zoom meeting as part of our face to face meeting. We are hoping that this will allow more members to become involve with the meetings.
Our first speaker, Greg Steenbeeke, spoke to the meeting from Sydney; and we had another member joining in from Victoria. Greg kindly allowed us to record his talk which is available for all to hear.
Anyone wanting to join our General Meeting, please contact the treasurer via email – firstname.lastname@example.org
Last year, UniSA second year media students were required to produce a short documentary about a local organised. Three of their students, Vanessa Rossi, Tayla Elliot and Emma Sullivan, chose to produce a video about the work of the Native Orchid Society of South Australia. And for this we thank them. It was interesting working with them and they learnt a few things about our bush gems – namely that they are not big and showy!
Some adjustment needed to be made to the original video, but it is now available for viewing
Orchid flowers are extremely variable in appearance, ranging from mimicking spiders, flying ducks, helmets, ants, etc. This variety also can cause some confusion. People have mistaken a different type of flower for an orchid and vis a versa.
This raises the question of what makes an orchid an orchid? With so much variety, how can they possibly belong to the same family?
Using orchids found in the Adelaide Hills, the following video shows three key features that helps identify a flower as an orchid. These three features are found in all orchids worldwide.
There are many different activities involved with orchid conservation. In situ conservation consists of looking after the orchids where they are growing; maintaining and protection of habitats and ecological systems. On the other hand ex situ conservation is caring for the orchids in cultivation in a similar way that zoos maintain an animals species that is extinct in the wild.
For the orchids one form of ex situ conservation is via seed collection and the propagation of new plants. With many of our terrestrial orchids this is not an easy task but here in South Australia an attempt is being made with four of our endangered orchids.
Unlike some of our terrestrial orchids these are ones which we have not been able to grow. There is a collaborative effort co-ordinated through the South Australian Seed Conservation Centre (Seedbank) to change this. Amongst the people helping the Seedbank are members of the Native Orchid Society of South Australia, students from Kildare College and Dr Noushka Reiter of the Royal Botanic Gardens Melbourne.
On July 30 2016, Dan Duval of the Seedbank was interviewed by Jon Lamb on Ashley Walsh’s ABC 891 Adelaide Talkback Gardening program. It is an informative interview and well worth the listen.
For more information on the work of the Seedbank, visit their website
Video as heard on Talkback Gardening with Jon Lamb and Ashley Walsh – Saturdays from 8.30 on 891 ABC Adelaide.
Mad dogs and Englishmen are not the only ones to go out in the midday sun. For orchidologists to see Sun Orchids flowering, then it is out into the midday sun on a hot day because that is when they open. There is no point going much before 11am and by 2pm most are closing and no point going out on a cool or windy day.
But for those who don’t want to go out (or cannot get out) into the midday sun, here is a video to be viewed in the cool of the shade.
This video features the Leopard Sun Orchid (Thelymitra benthamiana) an uncommon Sun Orchid in South Australia. Unlike many sun orchids which requires a view of the flower to confirm identification, this one can be identified by the leaf alone. At the beginning of the video take note of its distinctive leaf.
If you are out and about this week, keep an eye out for this attractive and unusual greenhood with its bottle brush labellum and rosette of “pineapple” like leaves.
Commonly known as Woodland Plumed or Bearded Greenhood, or Plumatochilos sp. Woodland Bearded Greenhood. The reason for the phrase name is because many consider that it is a separate species, in this instance, from Plumatochilos plumosum (syn Pterostylis plumosa). Originally all of the Bearded Greenhood were considered as one species – Pterostylis barbata but then Leo Cady named Pterostylis plumosa as a separate species. David Jones in his 2006 tome listed four species, P. barbatum, P plumosum, P. tasmanicum and P. turfosum.
Here in South Australia, Bates lists P. tasmanicum and two with phrase names suggesting that they are distinct from P. plumosum.
Peter Fehre recently posted on the Tasmanian Native Orchids Facebook page some helpful hints differentiating between P. tasmanicum and P. plumosum. Very similar information is found in Bates South Australia’s Native Orchids. These differences are:
P. tasmanicum – a short plant: short flower stem (not more than 14 cms), short labellum (to 15mm) , short ovary; short blunted galea (hood) to 25mm. It prefers damp, sandy areas and swamp margins.
P. plumosum – has length; long flower stem (10 – 30 cm), galea to 40mm with a long tip, long labellum (to 25mm). It is a plant of the woodlands and forests growing on well drained soil.
The differences between the two phrase named species are more subtle
R J Bates, 2011, South Australia’s Native Orchids DVD, NOSSA
D L Jones , 2006, A Complete Guide to Native Orchids of Australia
The following video is by Orchid Hunter, Julian Pitcher. Julian is concerned about the conservation of orchids and is also keen to teach others about Australia’s unique orchids. At the time of the visit, Julian was resident in Victoria; now he resides in Queensland. Enjoy an interstate visitor’s view of our beautiful orchids.
100 years ago on 15 July 1915, the state government declared Morialta a National Pleasure Resort. The Friends of Black Hill and Morialta have been holding a series of public events to celebrate the Centenary of Morialta. As part of the celebrations, the Native Orchid Society of South Australia has conducted some orchid walks in the park.
In 2004, an interim Flora Species List was produced by the then Department for Environment and Heritage and 39 orchid species were listed. It is an interim list and considering that the park is 5.33 square kilometres with a range of different habitats, it is possible that there are more species than originally listed.
One native species not included on the list is Caladenia latifolia but its presence is well known to members of the Native Orchid Society. Unfortunately the South African weed orchid Disa bracteata (Monadenia bracteata) hasalso been found in the park.
In this video most of the shots have not been taken at Morialta but it does showcase some of the orchids that can be found in the park.