19/08/2022 ….. Westonia to Roe Dam

Merredin Peak Reserve, Numerous days, Other Reserves, Road Trip, Western Australian Orchids

We are packed up and ready to leave by 10am on a beautiful sunny day. The Westonia Caravan Park is an awesome place to spend a few nights as the area around has so much to offer. Travelling south to the Great Eastern Highway, we turn west and make our way to Merredin. We decide to check out the reserve around Merredin Peak as this could be a great spot for some orchids. We were not disappointed.

We parked up at the RV Parking area closest to the rock as that was our main focus. However, to ensure we checked out a variety of habitat we venture along the Bush Trail first. (Due to time constraints, we only walked the trail I have highlighted in RED on the above map snip). Excitedly the first orchids found are some spider orchids. A trio of small clumps are found, with all appearing to be the Chameleon spider orchid (Caladenia dimidia), which is a common inland orchid of variable colourings; yellow, cream or pink-red flowers with white or pale-yellow labellum with red markings. Now you can see why these smaller spider orchids are so hard to positively identify.

Nearby we also find a little group of Ant orchids (Caladenia roei) growing. These are cheerful looking orchids, so are also commonly known as Clown orchids. They are a common widespread orchid, being found from Eurardy Station to Ravensthorpe.

Soon enough another spider orchid is found. These have a smooth-edged labellum with dense bands of calli plus the dorsal sepal is drooping. From these features it is the Drooping spider orchid (Caladenia radialis) which is also a common orchid across inland locations, from Northampton to Jerramungup.

Donkey orchids are found at the base of the granite rock growing in the wet areas. The Yellow granite donkey orchid (Diuris hazeliae) is a common inland orchid growing between Paynes Find and Salmon Gums. It is possible some may be a different species. Please let me if you think so.

Up on the rock in the mossy area we luckily find a few small Little laughing leek orchids (Prasophyllum gracile) growing. Not the best photos taken but still a record of their location. These small orchids are very widespread, growing between Shark Bay and Eyre. They grow on granite inland but in scrublands, woodlands and swamps nearer the coast.

Now we did come across many more spider orchids on the track, but I am struggling to identify them confidently. They range in colour, stance and size of both flower and leaf. For that reason, I will post the best pictures taken and will for now just call them Caladenia sp. Any ideas on the actual species please let me know and I will post an edit. EDIT 2 iNaturalist members have agreed they are all colour variations of the Chameleon spider orchid.

We move on as it’s now after 12 and lunch is calling as is the need to get some kilometres driven. Prior to leaving Merredin though we have to grab a look at and take a photo of the painted silos.

Leaving Merredin, we head west along the highway to Hines Hill where we turn south, down Hines Hill Road. It is at the intersection of Jura West Road that we pull over and check out a patch of vegetation. We all head off in different directions and my first orchid found is the common Hairy-stemmed snail orchid (Pterostylis setulosa). Not common here today but some others were found later in the search. Another Pterostylis orchid is found but has already been fertilised and has closed up. The Mallee banded greenhood (Pterostylis arbuscula) is a recently named species which as the name suggests is restricted to mallee regions. It is listed occurring from Dalwallinu to the Eyre Bird Observatory.

Deb as usual has the more exciting find. She comes across some small spider orchids. However, after the initial excitement it appears they are all Chameleon spider orchids. Nice to find, but a new species would have been great.

Chameleon spider orchids in the breeze

And to end the search of the area, a record of the one and only Western tiny blue orchid (Cyanicula aperta) is still to be posted, so here it is. It was found in the middle of all the spider orchids. As the common name suggests, these little guys only grow to 15omm in height and the flowers are 20 – 25 mm across.

Past lunch time and we need something to eat, so off we head into Bruce Rock. Unable to secure a counter meal at the local pub, we venture down to the local cafe, Bruce Rock Cafe (Love that Food) where we were surprised with the choices available. We sat outside to eat as the weather was mild. Well fed, we then move on.

With no real direction planned we head into Narembeen, so that Richard can change his tyre, on a solid flat surface, as the spinout north of Bullfinch seems to have caused the tyre to wear very badly. Narembeen has a great overnight campsite in the town, but we decide to head out to Roe Dam for our last joint overnight camp of the trip. We don’t have the site to ourselves, but we set up as best we can, light a campfire and enjoy the wonderful evening.